Created attachment 136045 [details] drm-intel-next-queued-i915-fifo-underrun-log CPU: Model name: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz GPU: 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5917] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device [17aa:2259] Flags: bus master, fast devsel, latency 0, IRQ 154 Memory at e1000000 (64-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=512M] I/O ports at e000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 Kernel tested: git: drm-intel branch drm-intel-next/drm-intel-next-queued git: linux 4.15-rc1/4.14/4.13 How to reproduce: 1, Connecting one external monitor(Dell 1080P/4k tested) to the laptop with HDMI cable. 2, switch the display mode in mirror/external/internal/extend modes. 3, After sometimes, internal or exteranl monitor will blink and tear. logs attached with drm.debug=0xce. Distro: Ubuntu 16.04.3 Xorg version: ii xserver-common 2:1.18.4-0ubuntu0.7 all common files used by various X servers rc xserver-xorg 1:7.7+13ubuntu3 amd64 X.Org X server rc xserver-xorg-core 2:1.18.4-0ubuntu0.7 amd64 Xorg X server - core server ii xserver-xorg-core-hwe-16.04 2:1.19.3-1ubuntu1~16.04.4 amd64 Xorg X server - core server ii xserver-xorg-hwe-16.04 1:7.7+16ubuntu3~16.04.1 amd64 X.Org X server ii xserver-xorg-legacy-hwe-16.04 2:1.19.3-1ubuntu1~16.04.4 amd64 setuid root Xorg server wrapper ii xserver-xorg-video-all-hwe-16.04 1:7.7+16ubuntu3~16.04.1 amd64 X.Org X server -- output driver metapackage ii xserver-xorg-video-fbdev-hwe-16.04 1:0.4.4-1build6~16.04.1 amd64 X.Org X server -- fbdev display driver ii xserver-xorg-video-intel-hwe-16.04 2:2.99.917+git20170309-0ubuntu1~16.04.1 amd64 X.Org X server -- Intel i8xx, i9xx display driver
Hello Pengyu Ma, Is it possible that you attach a picture/screen shot of the corrupted image?
Created attachment 136165 [details] video.mp4 Please refer to the video.mp4, Thanks.
Created attachment 136166 [details] screen flicker video when switch external and internal monitor.
It can be reproduced on new Thinkpad X1 Carbon 6th: logs: Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254635] i915 0000:00:02.0: HDMI-A-1: EDID is invalid: Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254638] [00] BAD 00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254639] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254640] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254641] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254641] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254642] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254643] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:20 u-ThinkPad-X1-Carbon-6th kernel: [ 4460.254644] [00] BAD ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Jan 17 13:44:56 u-ThinkPad-X1-Carbon-6th kernel: [ 4495.691252] do_trap: 14 callbacks suppressed Jan 17 13:44:56 u-ThinkPad-X1-Carbon-6th kernel: [ 4495.691257] traps: unity-settings-[2867] trap int3 ip:7fd2c6d9da5b sp:7fff492b5b80 error:0 in libglib-2.0.so.0.4800.2[7fd2c6d4d000+10f000] Jan 17 13:46:08 u-ThinkPad-X1-Carbon-6th kernel: [ 4568.235116] traps: unity-settings-[7346] trap int3 ip:7f8e278a3a5b sp:7fffbe71cd80 error:0 in libglib-2.0.so.0.4800.2[7f8e27853000+10f000] Jan 17 13:46:47 u-ThinkPad-X1-Carbon-6th kernel: [ 4607.021203] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. Jan 17 13:47:00 u-ThinkPad-X1-Carbon-6th kernel: [ 4619.928434] traps: unity-settings-[7403] trap int3 ip:7f5411004a5b sp:7ffcf4570a90 error:0 in libglib-2.0.so.0.4800.2[7f5410fb4000+10f000] Jan 17 13:47:05 u-ThinkPad-X1-Carbon-6th kernel: [ 4624.969103] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. Jan 17 13:47:10 u-ThinkPad-X1-Carbon-6th kernel: [ 4629.640154] traps: unity-settings-[7455] trap int3 ip:7ff901cc5a5b sp:7fff43917760 error:0 in libglib-2.0.so.0.4800.2[7ff901c75000+10f000] Jan 17 13:47:30 u-ThinkPad-X1-Carbon-6th kernel: [ 4650.078915] [drm] Reducing the compressed framebuffer size. This may lead to less power savings than a non-reduced-size. Try to increase stolen memory size if available in BIOS. Jan 17 13:47:31 u-ThinkPad-X1-Carbon-6th kernel: [ 4651.111816] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Jan 17 13:47:31 u-ThinkPad-X1-Carbon-6th kernel: [ 4651.111883] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun Jan 17 13:47:40 u-ThinkPad-X1-Carbon-6th kernel: [ 4659.497593] traps: unity-settings-[7468] trap int3 ip:7f793380ea5b sp:7ffcf09d49f0 error:0 in libglib-2.0.so.0.4800.2[7f79337be000+10f000]
Is this reproducible when booting with nvme_core.default_ps_max_latency_us=0 module parameter?
Setting BIOS 'ThunderBolt BIOS Assist Mode' from Disabled -> Enabled will fix this issue.
I think this issue has been affecting me for a few years now but i just recently started to look into it. my current system is ubuntu 19.04 but this issue was present even when i was using 18.04 and 18.10 and even before that. os: ubuntu 19.04 cpu: intel core i7 6700 graphics (integrated only): hd graphics 530 (skylake gt2) anyway, from time to time only one of my monitors turn on. when that happens `dmesg | grep i915` prints this: ``` ➜ ~ dmesg -e | grep i915 [ +0.000545] i915 0000:00:02.0: vgaarb: changed vga decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ +0.000627] [drm] finished loading dmc firmware i915/skl_dmc_ver1_27.bin (v1.27) [ +0.003052] [drm] initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor 0 [ +0.000036] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ +0.000047] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ +0.249846] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *error* cpu pipe a fifo underrun ➜ ~ dmesg -t | grep i915 [sat apr 27 17:47:08 2019] i915 0000:00:02.0: vgaarb: changed vga decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [sat apr 27 17:47:08 2019] [drm] finished loading dmc firmware i915/skl_dmc_ver1_27.bin (v1.27) [sat apr 27 17:47:09 2019] [drm] initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor 0 [sat apr 27 17:47:09 2019] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [sat apr 27 17:47:09 2019] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [sat apr 27 17:47:09 2019] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *error* cpu pipe a fifo underrun ``` when i switch to wayland, sometimes none of my monitors turn on at all. once when both turned on, i turned off one and tried to turn it back on again, but it went into energy saving mode. then `dmesg` was showing this: ``` ➜ ~ dmesg -t | grep i915 [sat apr 27 18:14:17 2019] i915 0000:00:02.0: vgaarb: changed vga decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [sat apr 27 18:14:17 2019] [drm] finished loading dmc firmware i915/skl_dmc_ver1_27.bin (v1.27) [sat apr 27 18:14:18 2019] [drm] initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor 0 [sat apr 27 18:14:18 2019] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [sat apr 27 18:14:18 2019] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [sat apr 27 18:14:56 2019] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *error* cpu pipe b fifo underrun ➜ ~ dmesg -e | grep i915 [ +0.000664] i915 0000:00:02.0: vgaarb: changed vga decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ +0.000861] [drm] finished loading dmc firmware i915/skl_dmc_ver1_27.bin (v1.27) [ +0.016298] [drm] initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor 0 [ +0.000047] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915]) [ +0.000047] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device [ +23.689059] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *error* cpu pipe b fifo underrun ```
Created attachment 144099 [details] dmesg
(In reply to Behrang Saeedzadeh from comment #8) > Created attachment 144099 [details] > dmesg Can you please verify the issue with drmtip https://cgit.freedesktop.org/drm-tip ?
(In reply to Behrang Saeedzadeh from comment #8) > Created attachment 144099 [details] > dmesg Changing the status to NEEDINFO. Recently there were few changed merged related to underruns. so can you please verify the issue with drmtip?
No updates from the reporter for more than a month. Closing this bug as WORKSFORME. Please reopen the issue if the issue is reproducible with latest drmtip (https://cgit.freedesktop.org/drm-tip). Remember to attach dmesg from boot with kernel parameters drm.debug=0x1e log_buf_len=4M when this issue is reopened.
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