Bug 88382 - [BSW] HDMI screen becomes black after resuming from S3/S4
Summary: [BSW] HDMI screen becomes black after resuming from S3/S4
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other All
: high critical
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-01-14 02:10 UTC by Jeff Zheng
Modified: 2017-10-06 14:32 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg after resume from S3 (352.60 KB, text/plain)
2015-01-14 02:10 UTC, Jeff Zheng 		no flags Details
testdisplay -i output after resume (3.05 KB, text/plain)
2015-01-14 02:11 UTC, Jeff Zheng 		no flags Details
patch for test (453 bytes, patch)
2015-01-26 23:31 UTC, Rodrigo Vivi 		no flags Details | Splinter Review
View All

Description Jeff Zheng 2015-01-14 02:10:14 UTC 
Created attachment 112189 [details]
dmesg after resume from S3

==System Environment==
--------------------------
Regression: No. I don't find a working version.

Non-working platforms: BSW
Working platforms: 

==kernel==
--------------------------
-nightly: /823e7150631cb1059edc9c57fc4c6f8454e1700e(fails)


==Bug detailed description==
-----------------------------
Boot BSW with HDMI connected, both eDP and HDMI screen show text. But after suspend and resume, only eDP shows text, HDMI screen is blank

"testdisplay -a" shows normal, and if I control-C to abort, HDMI screen shows text again.

==Reproduce steps==
---------------------------- 
1. Connect HDMI display to BSW and boot BSW
2. echo mem > /sys/power/state
3. Resume and check HDMI monitor
Comment 1 Jeff Zheng 2015-01-14 02:11:28 UTC 
Created attachment 112191 [details]
testdisplay -i output after resume
Comment 2 Rodrigo Vivi 2015-01-26 23:31:28 UTC 
Created attachment 112863 [details] [review]
patch for test

What happens with attached patch applied?
Comment 3 Jeff Zheng 2015-01-27 07:12:54 UTC 
After apply the patch, the HDMI screen is still black after system resumes.
Comment 4 Jeff Zheng 2015-01-29 01:36:39 UTC 
This issue still exists after upgrading BIOS from V53 to V55, and whatever 'dynamic memory self refresh' enabled or disabled in BIOS does not matter.

My HDMI monitor is ASUS PA238Q
Comment 5 Jeff Zheng 2015-02-06 08:41:02 UTC 
Exists on drm-intel-testing-2015-01-30
Comment 6 Jeff Zheng 2015-03-05 01:45:27 UTC 
Tried on drm-intel-testing-2015-02-27 + "attachment 113995 [details] [review]" and this issue still exists.
Comment 7 Jeff Zheng 2015-03-19 02:15:29 UTC 
After upgrading processor and BIOS to V59, this issue is fixed. I tried on both drm-intel-testing-2015-03-13 and drm-intel-testing-2015-01-30
Comment 8 Elizabeth 2017-10-06 14:32:19 UTC 
Closing old verified.

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