Attachment 133284 Details for Bug 102069 – ddcutil on intel

ddcutil on intel

intel-interrogate.txt (text/plain), 116.57 KB, created by Gerben Meijer on 2017-08-07 12:43:18 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Gerben Meijer

Created: 2017-08-07 12:43:18 UTC

Size: 116.57 KB

patch

obsolete

>Failure getting EDID for /dev/i2c-7: status code=EREMOTEIO(-121): Remote I/O error
>Output level:               Verbose
>Reporting DDC data errors:  false
>Trace groups active:        none
>Force I2C slave address:    false
>
>Setting output level verbose...
>Setting maximum retries...
>Forcing --stats...
>Forcing --force-slave-address..
>This command will take a while to run...
>
>
>*** Basic System Information ***
>
>ddcutil version: 0.8.4
>
>/proc/version:
>   Linux version 4.12.5 (root@believe) (gcc version 6.3.0 20170316 (Debian 6.3.0-9) ) #5 SMP PREEMPT Mon Aug 7 14:09:17 CEST 2017
>
>/etc/os-release...
>   PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
>
>/proc/cmdline:
>   BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>
>Processor information as reported by lscpu:
>   Architecture:          x86_64
>   CPU op-mode(s):        32-bit, 64-bit
>   Byte Order:            Little Endian
>   CPU(s):                8
>   On-line CPU(s) list:   0-7
>   Thread(s) per core:    2
>   Core(s) per socket:    4
>   Socket(s):             1
>   NUMA node(s):          1
>   Vendor ID:             GenuineIntel
>   CPU family:            6
>   Model:                 42
>   Model name:            Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
>   Stepping:              7
>   CPU MHz:               3063.403
>   CPU max MHz:           4200.0000
>   CPU min MHz:           1600.0000
>   BogoMIPS:              6800.20
>   Virtualization:        VT-x
>   L1d cache:             32K
>   L1i cache:             32K
>   L2 cache:              256K
>   L3 cache:              8192K
>   NUMA node0 CPU(s):     0-7
>   Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm epb tpr_shadow vnmi flexpriority ept vpid xsaveopt dtherm ida arat pln pts
>
>DMI Information from /sys/class/dmi/id:
>   Motherboard vendor:       ASRock
>   Motherboard product name: Z77 Extreme6
>   System vendor:            To Be Filled By O.E.M.
>   System product name:      To Be Filled By O.E.M.
>   Chassis vendor:           To Be Filled By O.E.M.
>   Chassis type:             3 - Desktop
>
>*** Primary Check 1: Identify video card and driver ***
>
>Obtaining card and driver information from /sys...
>
>Determining driver name and possibly version...
>   Driver name:    i915
>   Unable to determine driver version
>
>Video card identification:
>   Vendor:              8086       Intel Corporation
>   Device:              0102       2nd Generation Core Processor Family Integrated Graphics Controller
>   Subvendor/Subdevice: 1849/0102  ASRock Incorporation
>
>Determining driver name and possibly version...
>Cannot determine driver name
>
>Video card identification:
>   Vendor:              1002       Advanced Micro Devices, Inc. [AMD/ATI]
>   Device:              6819       Pitcairn PRO [Radeon HD 7850 / R7 265 / R9 270 1024SP]
>   Subvendor/Subdevice: 174b/e218  PC Partner Limited / Sapphire Technology
>
>*** Primary Check 2: Check that /dev/i2c-* exist and writable ***
>
>(identify_i2c_devices) Identified 10 I2C devices
>
>Checking /dev/i2c-* devices...
>
>Unless the system is using the AMD proprietary driver fglrx, devices /dev/i2c-*
>must exist and the logged on user must have read/write permission for those
>devices (or at least those devices associated with monitors).
>Typically, this access is enabled by:
>  - setting the group for /dev/i2c-* to i2c
>  - setting group RW permissions for /dev/i2c-*
>  - making the current user a member of group i2c
>Alternatively, this could be enabled by just giving everyone RW permission
>The following tests probe for these conditions.
>
>Checking for /dev/i2c-* devices...
>   crw-rw---- 1 root i2c 89, 0 Aug  7 14:10 /dev/i2c-0
>   crw-rw---- 1 root i2c 89, 1 Aug  7 14:10 /dev/i2c-1
>   crw-rw---- 1 root i2c 89, 2 Aug  7 14:10 /dev/i2c-2
>   crw-rw---- 1 root i2c 89, 3 Aug  7 14:10 /dev/i2c-3
>   crw-rw---- 1 root i2c 89, 4 Aug  7 14:10 /dev/i2c-4
>   crw-rw---- 1 root i2c 89, 5 Aug  7 14:10 /dev/i2c-5
>   crw-rw---- 1 root i2c 89, 6 Aug  7 14:10 /dev/i2c-6
>   crw-rw---- 1 root i2c 89, 7 Aug  7 14:10 /dev/i2c-7
>   crw-rw---- 1 root i2c 89, 8 Aug  7 14:10 /dev/i2c-8
>   crw-rw---- 1 root i2c 89, 9 Aug  7 14:10 /dev/i2c-9
>
>Current user: root (0)
>
>Current user (root) has RW access to all /dev/i2c-* devices.
>
>Checking for group i2c...
>   Group i2c exists
>   WARNING: Current user root is NOT a member of group i2c
>
>Looking for udev nodes files that reference i2c:
>   grep: /etc/udev/makedev.d/*: No such file or directory
>
>Looking for udev rules files that reference i2c:
>   /lib/udev/rules.d/60-flashrom.rules:# http://www.diygadget.com/tiao-usb-multi-protocol-adapter-jtag-spi-i2c-serial.html
>   /lib/udev/rules.d/60-i2c-tools.rules:SUBSYSTEM=="i2c-dev",KERNEL=="i2c-[0-9]*", GROUP="i2c", MODE="0660"
>   grep: /run/udev/rules.d/*rules: No such file or directory
>
>*** Primary Check 3: Check that module i2c_dev is loaded ***
>
>Checking for module i2c_dev...
>   Module i2c_dev          is built into kernel
>Remaining i2c_dev detail is purely informational.
>
>Check that kernel module i2c_dev is being loaded by examining files where this would be specified...
>   grep: /run/modules-load.d/*conf: No such file or directory
>   grep: /usr/lib/modules-load.d/*conf: No such file or directory
>
>Check for any references to i2c_dev in /etc/modprobe.d ...
>   grep: /run/modprobe.d/*conf: No such file or directory
>
>*** Primary Check 4: Driver specific checks ***
>
>Performing driver specific checks...
>No driver specific checks apply.
>
>*** Additional probes ***
>
>Scanning /proc/modules for driver environment...
>   Found other loaded module: i2c_i801
>
>Using lspci to examine driver environment...
>Video controller:  Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
>Video controller:  Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn PRO [Radeon HD 7850 / R7 265 / R9 270 1024SP]
>
>
>Testing if modules are loaded using /sys...
>   Module amdgpu           is NOT loaded
>   Module fglrx            is NOT loaded
>   Module i915             is loaded
>   Module nvidia           is NOT loaded
>   Module nouveau          is NOT loaded
>   Module radeon           is NOT loaded
>   Module vboxvideo        is NOT loaded
>   Module drm              is loaded
>   Module eeprom           is NOT loaded
>   Module i2c_algo_bit     is loaded
>   Module i2c_dev          is NOT loaded
>   Module i2c_piix4        is NOT loaded
>
>Examining /sys/bus/i2c/devices...
>   /sys/bus/i2c/devices/i2c-3/name: i915 gmbus dpc
>   /sys/bus/i2c/devices/i2c-1/name: i915 gmbus vga
>   /sys/bus/i2c/devices/i2c-8/name: DPDDC-D
>   /sys/bus/i2c/devices/i2c-6/name: DPDDC-B
>   /sys/bus/i2c/devices/i2c-4/name: i915 gmbus dpb
>   /sys/bus/i2c/devices/i2c-2/name: i915 gmbus panel
>   /sys/bus/i2c/devices/i2c-0/name: i915 gmbus ssc
>   /sys/bus/i2c/devices/i2c-9/name: SMBus I801 adapter at f040
>   /sys/bus/i2c/devices/i2c-7/name: DPDDC-C
>   /sys/bus/i2c/devices/i2c-5/name: i915 gmbus dpd
>
>
>Examining I2C buses, as detected by I2C layer...
>
>   Detected I2C buses:
>
>   Bus /dev/i2c-0 found:    true
>   Bus /dev/i2c-0 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-1 found:    true
>   Bus /dev/i2c-1 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-2 found:    true
>   Bus /dev/i2c-2 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-3 found:    true
>   Bus /dev/i2c-3 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-4 found:    true
>   Bus /dev/i2c-4 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-5 found:    true
>   Bus /dev/i2c-5 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                  I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                  I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-6 found:    true
>   Bus /dev/i2c-6 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                  I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                  I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                  I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                  I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-7 found:    true
>   Bus /dev/i2c-7 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    true
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                  I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                  I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                  I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                  I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>   Bus /dev/i2c-8 found:    true
>   Bus /dev/i2c-8 probed:   true
>   Address 0x30 present:    false
>   Address 0x37 present:    false
>   Address 0x50 present:    false
>   Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                  I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                  I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                  I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                  I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                  I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                  I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                  I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>
>xrandr connection report:
>   DP1 disconnected (normal left inverted right x axis y axis)
>   DP2 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
>   DP3 disconnected (normal left inverted right x axis y axis)
>   HDMI1 disconnected (normal left inverted right x axis y axis)
>   HDMI2 disconnected (normal left inverted right x axis y axis)
>   HDMI3 disconnected (normal left inverted right x axis y axis)
>   VGA1 disconnected (normal left inverted right x axis y axis)
>   VIRTUAL1 disconnected (normal left inverted right x axis y axis)
>
>Checking for possibly conflicting programs...
>
>Examining I2C buses using i2cdetect... 
>
>   Probing bus /dev/i2c-0 using command "i2cdetect -y 0"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-1 using command "i2cdetect -y 1"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-2 using command "i2cdetect -y 2"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-3 using command "i2cdetect -y 3"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-4 using command "i2cdetect -y 4"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-5 using command "i2cdetect -y 5"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-6 using command "i2cdetect -y 6"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-7 using command "i2cdetect -y 7"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: 50 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Probing bus /dev/i2c-8 using command "i2cdetect -y 8"
>           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
>      00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
>      70: -- -- -- -- -- -- -- --                         
>
>   Device /dev/i2c-9 is a SMBus device.  Skipping i2cdetect.
>
>Performing basic scan of I2C devices using local sysenv functions...
>
>   Examining device /dev/i2c-0...
>      Device name (/sys/bus/i2c/devices/i2c-0/name): i915 gmbus ssc
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-1...
>      Device name (/sys/bus/i2c/devices/i2c-1/name): i915 gmbus vga
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-2...
>      Device name (/sys/bus/i2c/devices/i2c-2/name): i915 gmbus panel
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-3...
>      Device name (/sys/bus/i2c/devices/i2c-3/name): i915 gmbus dpc
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-4...
>      Device name (/sys/bus/i2c/devices/i2c-4/name): i915 gmbus dpb
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-5...
>      Device name (/sys/bus/i2c/devices/i2c-5/name): i915 gmbus dpd
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_SMBUS_PEC, I2C_FUNC_SMBUS_BLOCK_PROC_CALL, 
>                     I2C_FUNC_SMBUS_QUICK, I2C_FUNC_SMBUS_READ_BYTE, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE, I2C_FUNC_SMBUS_READ_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BYTE_DATA, I2C_FUNC_SMBUS_READ_WORD_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_WORD_DATA, I2C_FUNC_SMBUS_PROC_CALL, 
>                     I2C_FUNC_SMBUS_READ_BLOCK_DATA, I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ENXIO(-6): No such device or address
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ENXIO(-6): No such device or address
>      DDC communication failed.
>
>   Examining device /dev/i2c-6...
>      Device name (/sys/bus/i2c/devices/i2c-6/name): DPDDC-B
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                     I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                     I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                     I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                     I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ETIMEDOUT(-110): Connection timed out
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ETIMEDOUT(-110): Connection timed out
>      DDC communication failed.
>
>   Examining device /dev/i2c-7...
>      Device name (/sys/bus/i2c/devices/i2c-7/name): DPDDC-C
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                     I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                     I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                     I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                     I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=EREMOTEIO(-121): Remote I/O error
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: EREMOTEIO(-121): Remote I/O error
>      DDC communication failed.
>
>   Examining device /dev/i2c-8...
>      Device name (/sys/bus/i2c/devices/i2c-8/name): DPDDC-D
>      Functionality: I2C_FUNC_I2C, I2C_FUNC_10BIT_ADDR, I2C_FUNC_SMBUS_PEC, 
>                     I2C_FUNC_SMBUS_BLOCK_PROC_CALL, I2C_FUNC_SMBUS_QUICK, 
>                     I2C_FUNC_SMBUS_READ_BYTE, I2C_FUNC_SMBUS_WRITE_BYTE, 
>                     I2C_FUNC_SMBUS_READ_BYTE_DATA, I2C_FUNC_SMBUS_WRITE_BYTE_DATA, 
>                     I2C_FUNC_SMBUS_READ_WORD_DATA, I2C_FUNC_SMBUS_WRITE_WORD_DATA, 
>                     I2C_FUNC_SMBUS_PROC_CALL, I2C_FUNC_SMBUS_READ_BLOCK_DATA, 
>                     I2C_FUNC_SMBUS_WRITE_BLOCK_DATA, I2C_FUNC_SMBUS_READ_I2C_BLOCK, 
>                     I2C_FUNC_SMBUS_WRITE_I2C_BLOCK
>      Unable to read EDID, psc=ETIMEDOUT(-110): Connection timed out
>
>      Trying simple VCP read of feature 0x10...
>      Attempt 1 to read feature returned hard error: ETIMEDOUT(-110): Connection timed out
>      DDC communication failed.
>
>   Examining device /dev/i2c-9...
>      Device name (/sys/bus/i2c/devices/i2c-9/name): SMBus I801 adapter at f040
>      Skipping SMBus device
>
>EDIDs reported by X11 for connected xrandr outputs:
>
>Probing I2C devices using udev, susbsystem i2c-dev...
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/i2c-6/i2c-dev/i2c-6
>   Device Node Path: /dev/i2c-6
>      struct udev_device at: 0xbc9e983e80
>         devpath:   /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/i2c-6/i2c-dev/i2c-6
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/i2c-6/i2c-dev/i2c-6
>         sysname:   i2c-6
>         sysnum:    6
>         devnode:   /dev/i2c-6
>         Properties:
>            DEVNAME -> /dev/i2c-6
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/i2c-6/i2c-dev/i2c-6
>            MAJOR -> 89
>            MINOR -> 6
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:6
>            device -> (null)
>            name -> DPDDC-B
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=6
>                      DEVNAME=i2c-6
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/i2c-7/i2c-dev/i2c-7
>   Device Node Path: /dev/i2c-7
>      struct udev_device at: 0xbc9e987820
>         devpath:   /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/i2c-7/i2c-dev/i2c-7
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/i2c-7/i2c-dev/i2c-7
>         sysname:   i2c-7
>         sysnum:    7
>         devnode:   /dev/i2c-7
>         Properties:
>            DEVNAME -> /dev/i2c-7
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/i2c-7/i2c-dev/i2c-7
>            MAJOR -> 89
>            MINOR -> 7
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:7
>            device -> (null)
>            name -> DPDDC-C
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=7
>                      DEVNAME=i2c-7
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-3/i2c-8/i2c-dev/i2c-8
>   Device Node Path: /dev/i2c-8
>      struct udev_device at: 0xbc9e989570
>         devpath:   /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-3/i2c-8/i2c-dev/i2c-8
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-3/i2c-8/i2c-dev/i2c-8
>         sysname:   i2c-8
>         sysnum:    8
>         devnode:   /dev/i2c-8
>         Properties:
>            DEVNAME -> /dev/i2c-8
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-3/i2c-8/i2c-dev/i2c-8
>            MAJOR -> 89
>            MINOR -> 8
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:8
>            device -> (null)
>            name -> DPDDC-D
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=8
>                      DEVNAME=i2c-8
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-0/i2c-dev/i2c-0
>   Device Node Path: /dev/i2c-0
>      struct udev_device at: 0xbc9e9925a0
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-0/i2c-dev/i2c-0
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-0/i2c-dev/i2c-0
>         sysname:   i2c-0
>         sysnum:    0
>         devnode:   /dev/i2c-0
>         Properties:
>            DEVNAME -> /dev/i2c-0
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-0/i2c-dev/i2c-0
>            MAJOR -> 89
>            MINOR -> 0
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:0
>            device -> (null)
>            name -> i915 gmbus ssc
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=0
>                      DEVNAME=i2c-0
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-1/i2c-dev/i2c-1
>   Device Node Path: /dev/i2c-1
>      struct udev_device at: 0xbc9e996260
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-1/i2c-dev/i2c-1
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-1/i2c-dev/i2c-1
>         sysname:   i2c-1
>         sysnum:    1
>         devnode:   /dev/i2c-1
>         Properties:
>            DEVNAME -> /dev/i2c-1
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-1/i2c-dev/i2c-1
>            MAJOR -> 89
>            MINOR -> 1
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:1
>            device -> (null)
>            name -> i915 gmbus vga
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=1
>                      DEVNAME=i2c-1
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-2/i2c-dev/i2c-2
>   Device Node Path: /dev/i2c-2
>      struct udev_device at: 0xbc9e99c050
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-2/i2c-dev/i2c-2
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-2/i2c-dev/i2c-2
>         sysname:   i2c-2
>         sysnum:    2
>         devnode:   /dev/i2c-2
>         Properties:
>            DEVNAME -> /dev/i2c-2
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-2/i2c-dev/i2c-2
>            MAJOR -> 89
>            MINOR -> 2
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:2
>            device -> (null)
>            name -> i915 gmbus panel
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=2
>                      DEVNAME=i2c-2
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-3/i2c-dev/i2c-3
>   Device Node Path: /dev/i2c-3
>      struct udev_device at: 0xbc9e99fd10
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-3/i2c-dev/i2c-3
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-3/i2c-dev/i2c-3
>         sysname:   i2c-3
>         sysnum:    3
>         devnode:   /dev/i2c-3
>         Properties:
>            DEVNAME -> /dev/i2c-3
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-3/i2c-dev/i2c-3
>            MAJOR -> 89
>            MINOR -> 3
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:3
>            device -> (null)
>            name -> i915 gmbus dpc
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=3
>                      DEVNAME=i2c-3
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-4/i2c-dev/i2c-4
>   Device Node Path: /dev/i2c-4
>      struct udev_device at: 0xbc9e9a5b00
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-4/i2c-dev/i2c-4
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-4/i2c-dev/i2c-4
>         sysname:   i2c-4
>         sysnum:    4
>         devnode:   /dev/i2c-4
>         Properties:
>            DEVNAME -> /dev/i2c-4
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-4/i2c-dev/i2c-4
>            MAJOR -> 89
>            MINOR -> 4
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:4
>            device -> (null)
>            name -> i915 gmbus dpb
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=4
>                      DEVNAME=i2c-4
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:02.0/i2c-5/i2c-dev/i2c-5
>   Device Node Path: /dev/i2c-5
>      struct udev_device at: 0xbc9e9a97c0
>         devpath:   /devices/pci0000:00/0000:00:02.0/i2c-5/i2c-dev/i2c-5
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:02.0/i2c-5/i2c-dev/i2c-5
>         sysname:   i2c-5
>         sysnum:    5
>         devnode:   /dev/i2c-5
>         Properties:
>            DEVNAME -> /dev/i2c-5
>            DEVPATH -> /devices/pci0000:00/0000:00:02.0/i2c-5/i2c-dev/i2c-5
>            MAJOR -> 89
>            MINOR -> 5
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:5
>            device -> (null)
>            name -> i915 gmbus dpd
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=5
>                      DEVNAME=i2c-5
>
>   ***One Device ***
>   path: /sys/devices/pci0000:00/0000:00:1f.3/i2c-9/i2c-dev/i2c-9
>   Device Node Path: /dev/i2c-9
>      struct udev_device at: 0xbc9e9af5b0
>         devpath:   /devices/pci0000:00/0000:00:1f.3/i2c-9/i2c-dev/i2c-9
>         subsystem: i2c-dev
>         devtype:   (null)
>         syspath:   /sys/devices/pci0000:00/0000:00:1f.3/i2c-9/i2c-dev/i2c-9
>         sysname:   i2c-9
>         sysnum:    9
>         devnode:   /dev/i2c-9
>         Properties:
>            DEVNAME -> /dev/i2c-9
>            DEVPATH -> /devices/pci0000:00/0000:00:1f.3/i2c-9/i2c-dev/i2c-9
>            MAJOR -> 89
>            MINOR -> 9
>            SUBSYSTEM -> i2c-dev
>         Sysattrs:
>            dev -> 89:9
>            device -> (null)
>            name -> SMBus I801 adapter at f040
>            subsystem -> i2c-dev
>            uevent -> MAJOR=89
>                      MINOR=9
>                      DEVNAME=i2c-9
>
>Summary of udev I2C devices
>   Subsystem   Sysname    Sysattr Name                        Devpath
>   i2c-dev     i2c-0      i915 gmbus ssc                      /devices/pci0000:00/0000:00:02.0/i2c-0/i2c-dev/i2c-0
>   i2c-dev     i2c-1      i915 gmbus vga                      /devices/pci0000:00/0000:00:02.0/i2c-1/i2c-dev/i2c-1
>   i2c-dev     i2c-2      i915 gmbus panel                    /devices/pci0000:00/0000:00:02.0/i2c-2/i2c-dev/i2c-2
>   i2c-dev     i2c-3      i915 gmbus dpc                      /devices/pci0000:00/0000:00:02.0/i2c-3/i2c-dev/i2c-3
>   i2c-dev     i2c-4      i915 gmbus dpb                      /devices/pci0000:00/0000:00:02.0/i2c-4/i2c-dev/i2c-4
>   i2c-dev     i2c-5      i915 gmbus dpd                      /devices/pci0000:00/0000:00:02.0/i2c-5/i2c-dev/i2c-5
>   i2c-dev     i2c-6      DPDDC-B                             /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/i2c-6/i2c-dev/i2c-6
>   i2c-dev     i2c-7      DPDDC-C                             /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/i2c-7/i2c-dev/i2c-7
>   i2c-dev     i2c-8      DPDDC-D                             /devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-3/i2c-8/i2c-dev/i2c-8
>   i2c-dev     i2c-9      SMBus I801 adapter at f040          /devices/pci0000:00/0000:00:1f.3/i2c-9/i2c-dev/i2c-9
>
>Looking for udev devices with name attribute DPMST...
>Summary of udev DPMST devices...
>   No devices detected
>
>Examining system logs...
>
>   Checking dmesg for video and I2C related lines...
>      [    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>      [    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>      [    0.670809] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
>      [    1.266467] [drm] Disabling PPGTT because VT-d is on
>      [    1.266481] [drm] Memory usable by graphics device = 2048M
>      [    1.266483] [drm] VT-d active for gfx access
>      [    1.266486] [drm] Replacing VGA console driver
>      [    1.266618] [drm] DMAR active, disabling use of stolen memory
>      [    1.272044] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>      [    1.272053] [drm] Driver supports precise vblank timestamp query.
>      [    1.274564] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
>      [    1.277703] [drm] Initialized i915 1.6.0 20170403 for 0000:00:02.0 on minor 0
>      [    1.277944] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
>      [    1.278134] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input2
>      [    1.321497] fbcon: inteldrmfb (fb0) is primary device
>      [    1.377739] [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun
>      [    1.379136] [drm:intel_set_pch_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
>      [    1.379139] [drm:cpt_irq_handler] *ERROR* PCH transcoder A FIFO underrun
>      [    1.429971] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
>      [    1.616224] ata1.00: supports DRM functions and may not be fully accessible
>      [    1.617414] ata1.00: supports DRM functions and may not be fully accessible
>      [   71.101714] [drm:intel_get_hpd_pins] hotplug event received, stat 0x00400000, dig 0x00101210, pins 0x00000040
>      [   71.101721] [drm:intel_hpd_irq_handler] digital hpd port C - long
>      [   71.101724] [drm:intel_hpd_irq_handler] Received HPD interrupt on PIN 6 - cnt: 0
>      [   71.101750] [drm:intel_dp_hpd_pulse] got hpd irq on port C - long
>      [   71.101759] [drm:i915_hotplug_work_func] running encoder hotplug functions
>      [   71.101766] [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 6) received hotplug event.
>      [   71.101770] [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      [   71.103804] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   71.103807] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   71.105838] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   71.105844] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      [   71.107875] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   71.107879] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   71.109909] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   71.109915] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   71.109920] [drm:i915_hotplug_work_func] Connector DP-2 (pin 6) received hotplug event.
>      [   71.109923] [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      [   71.109929] [drm:i915_hotplug_work_func] [CONNECTOR:54:DP-2] status updated from connected to disconnected
>      [   71.111589] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      [   71.111592] [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      [   71.111598] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      [   71.111608] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      [   71.111610] [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      [   71.111614] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] disconnected
>      [   71.111622] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      [   71.111623] [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      [   71.111627] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      [   71.111632] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      [   71.111634] [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      [   71.113031] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   71.113034] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   71.115053] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   71.115058] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      [   71.117042] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   71.117046] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   71.119053] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   71.119058] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   71.119063] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      [   71.119076] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      [   71.119079] [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      [   71.121113] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   71.121116] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   71.123146] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   71.123151] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      [   71.125185] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   71.125189] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   71.127222] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   71.127227] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   71.127231] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      [   71.127244] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      [   71.127247] [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      [   71.129282] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   71.129285] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   71.131318] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   71.131323] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      [   71.133357] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   71.133361] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   71.135393] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   71.135398] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   71.135403] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      [   71.135415] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      [   71.135419] [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      [   71.135424] [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      [   71.135426] [drm:intel_crt_detect] CRT not detected via hotplug
>      [   71.137452] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   71.137455] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      [   71.139488] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   71.139493] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   71.139495] [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      [   71.139499] [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      [   71.140194] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   71.140198] [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      [   71.140200] [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      [   71.140204] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      [   74.718355] [drm:intel_get_hpd_pins] hotplug event received, stat 0x00400000, dig 0x00101210, pins 0x00000040
>      [   74.718362] [drm:intel_hpd_irq_handler] digital hpd port C - long
>      [   74.718366] [drm:intel_hpd_irq_handler] Received HPD interrupt on PIN 6 - cnt: 0
>      [   74.718390] [drm:intel_dp_hpd_pulse] got hpd irq on port C - long
>      [   74.718398] [drm:i915_hotplug_work_func] running encoder hotplug functions
>      [   74.718404] [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 6) received hotplug event.
>      [   74.718408] [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      [   74.720442] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   74.720446] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   74.722476] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   74.722482] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      [   74.724515] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   74.724518] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   74.726548] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   74.726554] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   74.726559] [drm:i915_hotplug_work_func] Connector DP-2 (pin 6) received hotplug event.
>      [   74.726562] [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      [   74.727120] [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      [   74.727538] [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      [   74.727542] [drm:intel_dp_print_rates] source rates: 162000, 270000
>      [   74.727544] [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      [   74.727546] [drm:intel_dp_print_rates] common rates: 162000, 270000
>      [   74.728081] [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      [   74.728587] [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      [   74.729033] [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      [   74.729036] [drm:intel_dp_set_signal_levels] Using vswing level 0
>      [   74.729038] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.729042] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      [   74.729874] [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      [   74.729876] [drm:intel_dp_set_signal_levels] Using vswing level 1
>      [   74.729878] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.730706] [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      [   74.730708] [drm:intel_dp_set_signal_levels] Using vswing level 2
>      [   74.730710] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.731537] [drm:intel_dp_set_signal_levels] Using signal levels 06000000
>      [   74.731540] [drm:intel_dp_set_signal_levels] Using vswing level 3
>      [   74.731541] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.732360] [drm:intel_dp_start_link_train] Max Voltage Swing reached
>      [   74.732362] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      [   74.733491] [drm:intel_dp_dump_link_status] ln0_1:0x0 ln2_3:0x0 align:0x0 sink:0x0 adj_req0_1:0x33 adj_req2_3:0x0
>      [   74.733494] [drm:intel_dp_start_link_train] Clock recovery check failed, cannot continue channel equalization
>      [   74.737037] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.737200] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.737363] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.737524] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.737688] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.737855] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.738022] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.738189] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.738351] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.738513] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.738929] [drm:i915_hotplug_work_func] [CONNECTOR:54:DP-2] status updated from disconnected to connected
>      [   74.740313] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      [   74.740315] [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      [   74.740326] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      [   74.740332] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      [   74.740334] [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      [   74.740880] [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      [   74.741282] [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      [   74.741284] [drm:intel_dp_print_rates] source rates: 162000, 270000
>      [   74.741285] [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      [   74.741286] [drm:intel_dp_print_rates] common rates: 162000, 270000
>      [   74.741801] [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      [   74.742290] [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      [   74.742724] [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      [   74.742725] [drm:intel_dp_set_signal_levels] Using vswing level 0
>      [   74.742726] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.742728] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      [   74.743546] [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      [   74.743547] [drm:intel_dp_set_signal_levels] Using vswing level 1
>      [   74.743548] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.744355] [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      [   74.744356] [drm:intel_dp_set_signal_levels] Using vswing level 2
>      [   74.744357] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.745163] [drm:intel_dp_set_signal_levels] Using signal levels 06000000
>      [   74.745164] [drm:intel_dp_set_signal_levels] Using vswing level 3
>      [   74.745165] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   74.745982] [drm:intel_dp_start_link_train] Max Voltage Swing reached
>      [   74.745983] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      [   74.747113] [drm:intel_dp_dump_link_status] ln0_1:0x0 ln2_3:0x0 align:0x0 sink:0x0 adj_req0_1:0x33 adj_req2_3:0x0
>      [   74.747115] [drm:intel_dp_start_link_train] Clock recovery check failed, cannot continue channel equalization
>      [   74.753664] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.753825] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.753992] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754157] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754319] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754479] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754641] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754801] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.754964] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.755126] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   74.755548] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] probed modes :
>      [   74.755551] [drm:drm_mode_debug_printmodeline] Modeline 63:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>      [   74.755553] [drm:drm_mode_debug_printmodeline] Modeline 61:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>      [   74.755554] [drm:drm_mode_debug_printmodeline] Modeline 60:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>      [   74.755556] [drm:drm_mode_debug_printmodeline] Modeline 62:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
>      [   74.755557] [drm:drm_mode_debug_printmodeline] Modeline 59:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>      [   74.755576] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      [   74.755577] [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      [   74.755580] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      [   74.755582] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      [   74.755584] [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      [   74.756981] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   74.756982] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   74.759014] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   74.759019] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      [   74.761044] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   74.761048] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   74.763074] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   74.763079] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   74.763083] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      [   74.763095] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      [   74.763098] [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      [   74.765134] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   74.765137] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   74.767170] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   74.767175] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      [   74.769209] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   74.769213] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   74.771245] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   74.771250] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   74.771254] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      [   74.771275] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      [   74.771277] [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      [   74.773311] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   74.773315] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   74.775339] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   74.775343] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      [   74.777377] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   74.777380] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   74.779413] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   74.779418] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   74.779422] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      [   74.779435] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      [   74.779438] [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      [   74.779444] [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      [   74.779446] [drm:intel_crt_detect] CRT not detected via hotplug
>      [   74.781479] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   74.781483] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      [   74.783516] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   74.783521] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   74.783523] [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      [   74.783527] [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      [   74.784243] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   74.784246] [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      [   74.784249] [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      [   74.784253] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      [   79.119816] [drm:drm_fb_helper_hotplug_event] 
>      [   79.119819] [drm:drm_setup_crtcs] 
>      [   79.119824] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      [   79.119828] [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      [   79.119833] [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      [   79.119835] [drm:intel_crt_detect] CRT not detected via hotplug
>      [   79.121862] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   79.121865] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      [   79.123898] [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      [   79.123904] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   79.123906] [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      [   79.123909] [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      [   79.124593] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      [   79.124596] [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      [   79.124599] [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      [   79.124603] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      [   79.124607] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      [   79.124610] [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      [   79.126646] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   79.126649] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   79.128682] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      [   79.128686] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      [   79.130721] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   79.130724] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      [   79.132758] [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      [   79.132763] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   79.132767] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      [   79.132770] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      [   79.132773] [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      [   79.132778] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      [   79.132780] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      [   79.132783] [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      [   79.134818] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   79.134821] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   79.136851] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      [   79.136855] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      [   79.138889] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   79.138892] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      [   79.140924] [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      [   79.140928] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   79.140951] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      [   79.140954] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      [   79.140957] [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      [   79.142992] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   79.142995] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   79.145027] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      [   79.145031] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      [   79.147066] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   79.147069] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      [   79.149103] [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      [   79.149107] [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      [   79.149111] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      [   79.149115] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      [   79.149118] [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      [   79.149671] [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      [   79.150097] [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      [   79.150100] [drm:intel_dp_print_rates] source rates: 162000, 270000
>      [   79.150102] [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      [   79.150103] [drm:intel_dp_print_rates] common rates: 162000, 270000
>      [   79.150627] [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      [   79.151122] [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      [   79.151565] [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      [   79.151566] [drm:intel_dp_set_signal_levels] Using vswing level 0
>      [   79.151567] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   79.151570] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      [   79.152408] [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      [   79.152410] [drm:intel_dp_set_signal_levels] Using vswing level 1
>      [   79.152411] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   79.153228] [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      [   79.153230] [drm:intel_dp_set_signal_levels] Using vswing level 2
>      [   79.153231] [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      [   79.154046] [drm:intel_dp_start_link_train] clock recovery OK
>      [   79.154048] [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      [   79.155176] [drm:intel_dp_start_link_train] Channel EQ done. DP Training successful
>      [   79.169945] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170110] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170275] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170439] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170604] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170777] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.170943] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.171131] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.171297] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.171463] [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      [   79.171894] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] probed modes :
>      [   79.171897] [drm:drm_mode_debug_printmodeline] Modeline 63:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>      [   79.171900] [drm:drm_mode_debug_printmodeline] Modeline 61:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>      [   79.171911] [drm:drm_mode_debug_printmodeline] Modeline 60:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>      [   79.171915] [drm:drm_mode_debug_printmodeline] Modeline 62:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
>      [   79.171917] [drm:drm_mode_debug_printmodeline] Modeline 59:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>      [   79.171920] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      [   79.171922] [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      [   79.171926] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      [   79.171947] [drm:drm_setup_crtcs] connector 40 enabled? no
>      [   79.171949] [drm:drm_setup_crtcs] connector 43 enabled? no
>      [   79.171950] [drm:drm_setup_crtcs] connector 48 enabled? no
>      [   79.171952] [drm:drm_setup_crtcs] connector 50 enabled? no
>      [   79.171954] [drm:drm_setup_crtcs] connector 52 enabled? no
>      [   79.171956] [drm:drm_setup_crtcs] connector 54 enabled? yes
>      [   79.171957] [drm:drm_setup_crtcs] connector 56 enabled? no
>      [   79.171959] [drm:intel_fb_initial_config] Not using firmware configuration
>      [   79.171962] [drm:drm_setup_crtcs] looking for cmdline mode on connector 54
>      [   79.171964] [drm:drm_setup_crtcs] looking for preferred mode on connector 54 0
>      [   79.171966] [drm:drm_setup_crtcs] found mode 1024x768
>      [   79.171968] [drm:drm_setup_crtcs] picking CRTCs for 1024x768 config
>      [   79.171973] [drm:drm_setup_crtcs] desired mode 1024x768 set on crtc 32 (0,0)
>      [   80.469688] [drm:drm_mode_setcrtc] [CRTC:32:pipe A]
>      [   80.469697] [drm:drm_mode_setcrtc] [CONNECTOR:54:DP-2]
>      [  123.181024] drm_dp_i2c_do_msg: 2 callbacks suppressed
>
>   Checking journalctl for video and I2C related lines...
>      Aug 07 14:10:24 believe kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>      Aug 07 14:10:24 believe kernel: Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>      Aug 07 14:10:24 believe kernel: pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
>      Aug 07 14:10:24 believe kernel: [drm] Disabling PPGTT because VT-d is on
>      Aug 07 14:10:24 believe kernel: [drm] Memory usable by graphics device = 2048M
>      Aug 07 14:10:24 believe kernel: [drm] VT-d active for gfx access
>      Aug 07 14:10:24 believe kernel: [drm] Replacing VGA console driver
>      Aug 07 14:10:24 believe kernel: [drm] DMAR active, disabling use of stolen memory
>      Aug 07 14:10:24 believe kernel: [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>      Aug 07 14:10:24 believe kernel: [drm] Driver supports precise vblank timestamp query.
>      Aug 07 14:10:24 believe kernel: i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
>      Aug 07 14:10:24 believe kernel: [drm] Initialized i915 1.6.0 20170403 for 0000:00:02.0 on minor 0
>      Aug 07 14:10:24 believe kernel: ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
>      Aug 07 14:10:24 believe kernel: input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input2
>      Aug 07 14:10:24 believe kernel: fbcon: inteldrmfb (fb0) is primary device
>      Aug 07 14:10:24 believe kernel: [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe A FIFO underrun
>      Aug 07 14:10:24 believe kernel: [drm:intel_set_pch_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A
>      Aug 07 14:10:24 believe kernel: [drm:cpt_irq_handler] *ERROR* PCH transcoder A FIFO underrun
>      Aug 07 14:10:24 believe kernel: i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
>      Aug 07 14:10:24 believe kernel: ata1.00: supports DRM functions and may not be fully accessible
>      Aug 07 14:10:24 believe kernel: ata1.00: supports DRM functions and may not be fully accessible
>      Aug 07 14:10:24 believe systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0...
>      Aug 07 14:10:24 believe systemd[1]: Started Load/Save Screen Backlight Brightness of backlight:acpi_video0.
>      Aug 07 14:10:25 believe systemd-logind[865]: Watching system buttons on /dev/input/event2 (Video Bus)
>      Aug 07 14:10:51 believe sudo[2355]:   gerben : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/tee /sys/class/backlight/acpi_video0/brightness
>      Aug 07 14:11:09 believe sudo[4331]:   gerben : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/tee /sys/class/backlight/acpi_video0/brightness
>      Aug 07 14:11:09 believe sudo[4435]:   gerben : TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/usr/bin/tee /sys/class/backlight/acpi_video0/brightness
>      Aug 07 14:11:25 believe kernel: [drm:intel_get_hpd_pins] hotplug event received, stat 0x00400000, dig 0x00101210, pins 0x00000040
>      Aug 07 14:11:25 believe kernel: [drm:intel_hpd_irq_handler] digital hpd port C - long
>      Aug 07 14:11:25 believe kernel: [drm:intel_hpd_irq_handler] Received HPD interrupt on PIN 6 - cnt: 0
>      Aug 07 14:11:25 believe kernel: [drm:intel_dp_hpd_pulse] got hpd irq on port C - long
>      Aug 07 14:11:25 believe kernel: [drm:i915_hotplug_work_func] running encoder hotplug functions
>      Aug 07 14:11:25 believe kernel: [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 6) received hotplug event.
>      Aug 07 14:11:25 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:25 believe kernel: [drm:i915_hotplug_work_func] Connector DP-2 (pin 6) received hotplug event.
>      Aug 07 14:11:25 believe kernel: [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:25 believe kernel: [drm:i915_hotplug_work_func] [CONNECTOR:54:DP-2] status updated from connected to disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:25 believe kernel: [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:25 believe kernel: [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:25 believe kernel: [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:25 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:25 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:25 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      Aug 07 14:11:25 believe kernel: [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      Aug 07 14:11:25 believe kernel: [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      Aug 07 14:11:25 believe kernel: [drm:intel_crt_detect] CRT not detected via hotplug
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      Aug 07 14:11:25 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:25 believe kernel: [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      Aug 07 14:11:25 believe kernel: [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      Aug 07 14:11:25 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:25 believe kernel: [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      Aug 07 14:11:25 believe kernel: [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      Aug 07 14:11:25 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:intel_get_hpd_pins] hotplug event received, stat 0x00400000, dig 0x00101210, pins 0x00000040
>      Aug 07 14:11:28 believe kernel: [drm:intel_hpd_irq_handler] digital hpd port C - long
>      Aug 07 14:11:28 believe kernel: [drm:intel_hpd_irq_handler] Received HPD interrupt on PIN 6 - cnt: 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_hpd_pulse] got hpd irq on port C - long
>      Aug 07 14:11:28 believe kernel: [drm:i915_hotplug_work_func] running encoder hotplug functions
>      Aug 07 14:11:28 believe kernel: [drm:i915_hotplug_work_func] Connector HDMI-A-2 (pin 6) received hotplug event.
>      Aug 07 14:11:28 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:28 believe kernel: [drm:i915_hotplug_work_func] Connector DP-2 (pin 6) received hotplug event.
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] source rates: 162000, 270000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] common rates: 162000, 270000
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 1
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 2
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 06000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 3
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_start_link_train] Max Voltage Swing reached
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_dump_link_status] ln0_1:0x0 ln2_3:0x0 align:0x0 sink:0x0 adj_req0_1:0x33 adj_req2_3:0x0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_start_link_train] Clock recovery check failed, cannot continue channel equalization
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:i915_hotplug_work_func] [CONNECTOR:54:DP-2] status updated from disconnected to connected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] source rates: 162000, 270000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_print_rates] common rates: 162000, 270000
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 1
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 2
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 06000000
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 3
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_start_link_train] Max Voltage Swing reached
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_dump_link_status] ln0_1:0x0 ln2_3:0x0 align:0x0 sink:0x0 adj_req0_1:0x33 adj_req2_3:0x0
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_start_link_train] Clock recovery check failed, cannot continue channel equalization
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] probed modes :
>      Aug 07 14:11:28 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 63:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>      Aug 07 14:11:28 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 61:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>      Aug 07 14:11:28 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 60:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>      Aug 07 14:11:28 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 62:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
>      Aug 07 14:11:28 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 59:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:28 believe kernel: [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:28 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:28 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:28 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      Aug 07 14:11:28 believe kernel: [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      Aug 07 14:11:28 believe kernel: [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_crt_detect] CRT not detected via hotplug
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      Aug 07 14:11:28 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:28 believe kernel: [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      Aug 07 14:11:28 believe kernel: [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      Aug 07 14:11:28 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:28 believe kernel: [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      Aug 07 14:11:28 believe kernel: [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      Aug 07 14:11:28 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_fb_helper_hotplug_event] 
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] 
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1]
>      Aug 07 14:11:33 believe kernel: [drm:intel_crt_detect] [CONNECTOR:40:VGA-1] force=1
>      Aug 07 14:11:33 believe kernel: [drm:intel_crt_detect] ironlake hotplug adpa=0xf40000, result 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_crt_detect] CRT not detected via hotplug
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus vga] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:33 believe kernel: [drm:intel_crt_get_edid] CRT GMBUS EDID read failed, retry using GPIO bit-banging
>      Aug 07 14:11:33 believe kernel: [drm:intel_gmbus_force_bit] enabling bit-banging on i915 gmbus vga. force bit now 1
>      Aug 07 14:11:33 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus vga
>      Aug 07 14:11:33 believe kernel: [drm:intel_gmbus_force_bit] disabling bit-banging on i915 gmbus vga. force bit now 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_crt_detect_ddc] CRT not detected via DDC:0x50 [no valid EDID found]
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:40:VGA-1] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:33 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:43:HDMI-A-1]
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpb
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpb] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:43:HDMI-A-1] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_detect] [CONNECTOR:48:DP-1]
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-1] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:33 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:50:HDMI-A-2]
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpc
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpc] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:50:HDMI-A-2] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:33 believe kernel: [drm:intel_hdmi_detect] [CONNECTOR:52:HDMI-A-3]
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0050 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapter i915 gmbus dpd
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK on first message, retry
>      Aug 07 14:11:33 believe kernel: [drm:gmbus_xfer] GMBUS [i915 gmbus dpd] NAK for addr: 0040 w(1)
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_dual_mode_detect] DP dual mode HDMI ID:  (err -6)
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:52:HDMI-A-3] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_detect] [CONNECTOR:54:DP-2]
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_read_dpcd] DPCD: 12 14 c4 01 00 00 01 80 02 00 00 00 00 00 00
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_detect] Display Port TPS3 support: source no, sink yes
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_print_rates] source rates: 162000, 270000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_print_rates] sink rates: 162000, 270000, 540000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_print_rates] common rates: 162000, 270000
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_read_desc] DP sink: OUI 00-04-4b dev-ID 2324 HW-rev 12.6 SW-rev 3.174 quirks 0x0000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_check_link_status] DP C: channel EQ not ok, retraining
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 00000000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS1
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 02000000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 1
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using signal levels 04000000
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using vswing level 2
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_set_signal_levels] Using pre-emphasis level 0
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_start_link_train] clock recovery OK
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_program_link_training_pattern] Using DP training pattern TPS2
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_start_link_train] Channel EQ done. DP Training successful
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_dp_i2c_do_msg] I2C nack (result=0, size=0
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:54:DP-2] probed modes :
>      Aug 07 14:11:33 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 63:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
>      Aug 07 14:11:33 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 61:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
>      Aug 07 14:11:33 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 60:"800x600" 56 36000 800 824 896 1024 600 601 603 625 0x40 0x5
>      Aug 07 14:11:33 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 62:"848x480" 60 33750 848 864 976 1088 480 486 494 517 0x40 0x5
>      Aug 07 14:11:33 believe kernel: [drm:drm_mode_debug_printmodeline] Modeline 59:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:33 believe kernel: [drm:intel_dp_detect] [CONNECTOR:56:DP-3]
>      Aug 07 14:11:33 believe kernel: [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:56:DP-3] disconnected
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 40 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 43 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 48 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 50 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 52 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 54 enabled? yes
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] connector 56 enabled? no
>      Aug 07 14:11:33 believe kernel: [drm:intel_fb_initial_config] Not using firmware configuration
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] looking for cmdline mode on connector 54
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] looking for preferred mode on connector 54 0
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] found mode 1024x768
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] picking CRTCs for 1024x768 config
>      Aug 07 14:11:33 believe kernel: [drm:drm_setup_crtcs] desired mode 1024x768 set on crtc 32 (0,0)
>      Aug 07 14:11:34 believe kernel: [drm:drm_mode_setcrtc] [CRTC:32:pipe A]
>      Aug 07 14:11:34 believe kernel: [drm:drm_mode_setcrtc] [CONNECTOR:54:DP-2]
>      Aug 07 14:12:17 believe kernel: drm_dp_i2c_do_msg: 2 callbacks suppressed
>
>   Limiting output to 200 lines...
>   Checking Xorg.0.log for video and I2C related lines...
>      [    35.598] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.12.5 root=UUID=01892caf-45be-4500-a6c8-ba261ab641e5 ro usbcore.autosuspend=-1 init=/bin/systemd video=DisplayPort-0:2560x1440-24@60 zswap.enabled=1 zswap.compressor=lz4 video=DisplayPort-1:2560x1440-24@60
>      [    35.714] 	X.Org Video Driver: 23.0
>      [    35.715] (II) xfree86: Adding drm device (/dev/dri/card0)
>      [    35.847] 	ABI class: X.Org Video Driver, version 23.0
>      [    35.855] 	Module class: X.Org Video Driver
>      [    35.855] 	ABI class: X.Org Video Driver, version 23.0
>      	915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
>      [    35.880] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20170403
>      [    35.880] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20161206-1 (Timo Aaltonen <tjaalton@debian.org>)
>      [    36.550] (II) config/udev: Adding input device Video Bus (/dev/input/event2)
>      [    36.550] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
>      [    36.550] (II) Using input driver 'evdev' for 'Video Bus'
>      [    36.550] (**) Video Bus: always reports core events
>      [    36.550] (**) evdev: Video Bus: Device: "/dev/input/event2"
>      [    36.550] (--) evdev: Video Bus: Vendor 0 Product 0x6
>      [    36.550] (--) evdev: Video Bus: Found keys
>      [    36.550] (II) evdev: Video Bus: Configuring as keyboard
>      [    36.550] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input2/event2"
>      [    36.550] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
>
>Probing connected monitors using libdrm...
>
>   Checking libdrm version using pkg-config...
>      2.4.81
>
>   Has a DRM kernel driver been loaded? (drmAvailable()): true
>
>   Probing device /dev/dri/card0...
>      Open succeeded for device: /dev/dri/card0
>
>      Drm driver version information:
>         Version:     1.6.0
>         Driver:      i915
>         Date:        20170403
>         Description: Intel Graphics
>
>      DRM library version: 1.3.0.
>
>      DRM Busid:  pci:0000:00:02.0
>
>      Device information:
>         bustype:                0 - pci
>         domain:bus:device.func: 0000:00:02.0
>         vendor    vid:pid:      0x8086:0x0102
>         subvendor vid:pid:      0x1849:0x0102
>         revision id:            0x0009
>
>      Is a modesetting capable driver attached to bus id: pci:0000:00:02.0?
>      (calling drmCheckModesettingAvailable())
>         Yes
>
>      Retrieving DRM resources...
>
>      Scanning defined properties...
>         Property  1:  EDID                 flags: 0x00000014 - DRM_MODE_PROP_IMMUTABLE, DRM_MODE_PROP_BLOB
>         Property  2:  DPMS                 flags: 0x00000008 - DRM_MODE_PROP_ENUM
>         Property  3:  PATH                 flags: 0x00000014 - DRM_MODE_PROP_IMMUTABLE, DRM_MODE_PROP_BLOB
>         Property  4:  TILE                 flags: 0x00000014 - DRM_MODE_PROP_IMMUTABLE, DRM_MODE_PROP_BLOB
>         Property  5:  link-status          flags: 0x00000008 - DRM_MODE_PROP_ENUM
>         Property  6:  type                 flags: 0x0000000c - DRM_MODE_PROP_IMMUTABLE, DRM_MODE_PROP_ENUM
>         Property  7:  SRC_X                flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property  8:  SRC_Y                flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property  9:  SRC_W                flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 10:  SRC_H                flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 11:  CRTC_X               flags: 0x80000080 - DRM_MODE_PROP_SIGNED_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 12:  CRTC_Y               flags: 0x80000080 - DRM_MODE_PROP_SIGNED_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 13:  CRTC_W               flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 14:  CRTC_H               flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 15:  FB_ID                flags: 0x80000040 - DRM_MODE_PROP_OBJECT, DRM_MODE_PROP_ATOMIC
>         Property 16:  IN_FENCE_FD          flags: 0x80000080 - DRM_MODE_PROP_SIGNED_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 17:  OUT_FENCE_PTR        flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 18:  CRTC_ID              flags: 0x80000040 - DRM_MODE_PROP_OBJECT, DRM_MODE_PROP_ATOMIC
>         Property 19:  ACTIVE               flags: 0x80000002 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_ATOMIC
>         Property 20:  MODE_ID              flags: 0x80000010 - DRM_MODE_PROP_BLOB, DRM_MODE_PROP_ATOMIC
>         Property 21:  DEGAMMA_LUT          flags: 0x00000010 - DRM_MODE_PROP_BLOB
>         Property 22:  DEGAMMA_LUT_SIZE     flags: 0x00000006 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_IMMUTABLE
>         Property 23:  CTM                  flags: 0x00000010 - DRM_MODE_PROP_BLOB
>         Property 24:  GAMMA_LUT            flags: 0x00000010 - DRM_MODE_PROP_BLOB
>         Property 25:  GAMMA_LUT_SIZE       flags: 0x00000006 - DRM_MODE_PROP_RANGE, DRM_MODE_PROP_IMMUTABLE
>         Property 27:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 29:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 31:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 34:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 36:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 38:  rotation             flags: 0x00000020 - DRM_MODE_PROP_BITMASK
>         Property 44:  audio                flags: 0x00000008 - DRM_MODE_PROP_ENUM
>         Property 45:  Broadcast RGB        flags: 0x00000008 - DRM_MODE_PROP_ENUM
>         Property 46:  aspect ratio         flags: 0x00000008 - DRM_MODE_PROP_ENUM
>
>      Scanning connectors...
>      connector_id:        40
>         connector name       VGA-1
>         connector_type:      1 - VGA
>         connector_type_id:   1
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>      connector_id:        43
>         connector name       HDMI-1
>         connector_type:      11 - HDMI
>         connector_type_id:   1
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>      connector_id:        48
>         connector name       DP-1
>         connector_type:      10 - DP
>         connector_type_id:   1
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>      connector_id:        50
>         connector name       HDMI-2
>         connector_type:      11 - HDMI
>         connector_type_id:   2
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>      connector_id:        52
>         connector name       HDMI-3
>         connector_type:      11 - HDMI
>         connector_type_id:   3
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>      connector_id:        54
>         connector name       DP-2
>         connector_type:      10 - DP
>         connector_type_id:   2
>         connection:          1 - connected
>         encoder:             53
>            encoder type (signal format): 2 - TDMS
>         EDID property
>            Blob not found
>      connector_id:        56
>         connector name       DP-3
>         connector_type:      10 - DP
>         connector_type_id:   3
>         connection:          2 - disconnected
>         encoder:             0
>         Encoder with id 0 not found
>         EDID property
>            Blob not found
>
>Device Identifier Cross Reference Report
>
>Skipping USB environment exploration.
>Issue command "ddcutil usbenvironment --verbose" if there are any USB attached monitors.
>
>Statistics for environment exploration:
>
>Maximum Try Settings:
>Operation Type             Current  Default
>Write only exchange tries:        4        4
>Write read exchange tries:       15       10
>Multi-part exchange tries:       15        8
>
>Retry statistics for ddc write only
>   No tries attempted
>
>Retry statistics for ddc write/read
>   No tries attempted
>
>Retry statistics for multi-part exchange
>   No tries attempted
>
>DDC Related Errors:  None
>Total errors: 0
>
>Errors Wrapped in Retry:  None
>Total errors: 0
>
>Sleep Strategy Stats:
>   Total IO events:        163
>   IO error count:           0
>   Total sleep events:       0
>
>   Sleep Event type      Count
>   SE_WRITE_TO_READ          0
>   SE_POST_OPEN              0
>   SE_POST_WRITE             0
>   SE_POST_READ              0
>   SE_DDC_NULL               0
>   SE_POST_SAVE_SETTINGS     0
>
>Call Stats:
>   Type                                     Count Millisec  (   Nanosec)
>   write calls       (IE_WRITE)                39      648  ( 648926341)
>   read calls        (IE_READ)                 18      324  ( 324351990)
>   open file calls   (IE_OPEN)                 21        0  (    195791)
>   close file calls  (IE_CLOSE)                21        0  (     71809)
>   other I/O calls   (IE_OTHER)                64        0  (     72066)
>   Totals:                                    163      973  ( 973617997)
>
>Sleep Call Stats:
>   Total sleep calls:                                   10
>   Requested sleep time milliseconds :                 500
>   Actual sleep milliseconds (nanosec):                500  ( 500701498)
>
>Total elapsed milliseconds (nanoseconds):            21695  (21695558230)
>
>*** Detected Displays ***
>No displays found
>
>Statistics for display detection:
>
>Maximum Try Settings:
>Operation Type             Current  Default
>Write only exchange tries:        4        4
>Write read exchange tries:       15       10
>Multi-part exchange tries:       15        8
>
>Retry statistics for ddc write only
>   No tries attempted
>
>Retry statistics for ddc write/read
>   No tries attempted
>
>Retry statistics for multi-part exchange
>   No tries attempted
>
>DDC Related Errors:  None
>Total errors: 0
>
>Errors Wrapped in Retry:  None
>Total errors: 0
>
>Sleep Strategy Stats:
>   Total IO events:          0
>   IO error count:           0
>   Total sleep events:       0
>
>   Sleep Event type      Count
>   SE_WRITE_TO_READ          0
>   SE_POST_OPEN              0
>   SE_POST_WRITE             0
>   SE_POST_READ              0
>   SE_DDC_NULL               0
>   SE_POST_SAVE_SETTINGS     0
>
>Call Stats:
>   Type                                     Count Millisec  (   Nanosec)
>   Totals:                                      0        0  (         0)
>
>Sleep Call Stats:
>   Total sleep calls:                                   10
>   Requested sleep time milliseconds :                 500
>   Actual sleep milliseconds (nanosec):                500  ( 500701498)
>
>Elapsed milliseconds since last reset (nanoseconds):     0  (     36706)
>Total elapsed milliseconds (nanoseconds):            21695  (21695601201)
>Setting output level normal  Table features will be skipped...
>
>Display scanning complete.

Actions: View

Attachments on bug 102069: 133284 | 133285 | 133286 | 133297 | 133301

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.