Bug 88159 - [BSW] Screen stays off when resuming from a suspend to RAM
Summary: [BSW] Screen stays off when resuming from a suspend to RAM
Status: CLOSED NOTOURBUG
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: All Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-01-07 14:53 UTC by cprigent
Modified: 2017-07-24 22:49 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
acpi dump (325.40 KB, text/plain)
2015-01-07 14:53 UTC, cprigent
no flags Details
serial log (41.08 KB, text/plain)
2015-01-07 14:53 UTC, cprigent
no flags Details
Kernel configuration (149.87 KB, text/plain)
2015-01-07 14:54 UTC, cprigent
no flags Details
config-3.19-rc2-Eywa (172.62 KB, text/plain)
2015-01-08 10:30 UTC, cprigent
no flags Details

Description cprigent 2015-01-07 14:53:35 UTC
Created attachment 111914 [details]
acpi dump

Platform: Braswell M
CPU : Intel(R) CPU @ 1.36GHz (family: 6, model: 76 stepping: 2)
SoC : BSW B1
CRB : BRASWELL RVP Fab2
Mandatory Reworks
Software
Linux distribution: Ubuntu 14.04 LTS 64 bits
Kernel:
3.19-rc1 from mwesterb-linux, head= braswell, git://git-amr-4.devtools.intel.com/mwesterb-linux.git
or
3.19-rc2 from git-amr-2.devtools.intel.com otc_eywa-linux-eywa
BIOS: BRASWEL1.X64.0052.R00.1412261152
TXE FW: 2.0.0.2042
Ksc: 1.06

Pre-conditions:
-------------------
Use any computer/device to remotely access to the DUT
Check DUT IP adress

Steps:
----------
1. Execute command as root:
echo mem > /sys/power/state
2. Wait 60 seconds
3. Resume with power button
4. Wait a moment

Actual result:
---------------
4. DUT is resumed (ssh works) but screen is off

Expected result:
---------------------
4. DUT resumes with screen on
Comment 1 cprigent 2015-01-07 14:53:59 UTC
Created attachment 111915 [details]
serial log
Comment 2 cprigent 2015-01-07 14:54:52 UTC
Created attachment 111916 [details]
Kernel configuration
Comment 3 Chris Wilson 2015-01-07 14:57:22 UTC
To use i915 on this platform you need to set CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT
Comment 4 cprigent 2015-01-08 10:30:07 UTC
Created attachment 111949 [details]
config-3.19-rc2-Eywa

This is the same result with CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT=y
Comment 5 Chris Wilson 2015-01-08 10:36:59 UTC
The dmesg is required if you want to show that you are actually using the i915.ko.
Comment 6 Jani Nikula 2015-01-08 10:37:53 UTC
(In reply to Chris Wilson from comment #5)
> The dmesg is required if you want to show that you are actually using the
> i915.ko.

Preferably with drm.debug=14 too.


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