Bug 81082 - [BYT Bisected]eDP monitor can't be lighted up after S3
Summary: [BYT Bisected]eDP monitor can't be lighted up after S3
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: highest critical
Assignee: Ville Syrjala
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-07-09 06:59 UTC by liulei
Modified: 2016-10-19 12:44 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg before s3 (120.85 KB, text/plain)
2014-07-09 06:59 UTC, liulei 		no flags Details
dmesg after s3 (123.51 KB, text/plain)
2014-07-09 07:00 UTC, liulei 		no flags Details
View All

Description liulei 2014-07-09 06:59:15 UTC 
Created attachment 102460 [details]
dmesg before s3

==System Environment==
--------------------------
Regression: Yes. Good commit: 57127efaf1adc5e0bb2d3fa5a01bd97f71af7836(-next-queued)

==kernel==
--------------------------
-nightly:2a9005c8ae4d3418dd79f2471695f85c83024dd0 (failed)
    drm-intel-nightly: 2014y-07m-07d-23h-45m-32s integration manifest
-queued: f7d2323c181ed5a2596494b860a99d567fd3e6cd (failed)
    drm/i915: correct BLC vs PWM enable/disable ordering
-fixes: ad952a8f0cb9f0a5f1c8dd0521ffeb01a8c451b9 (works)
    drm/i915: Don't clobber the GTT when it's within stolen memory
==Bug detailed description==
--------------------------
eDP monitor can't be lighted up after S3

==Reproduce steps==
---------------------------- 
1. do s3
2. check eDP monitor
Comment 1 liulei 2014-07-09 07:00:37 UTC 
Created attachment 102461 [details]
dmesg after s3
Comment 2 liulei 2014-07-11 00:50:04 UTC 
==Bisect results==
----------------------------
Bisect shows: aa519f231d4ce3ad20932cbd2bb1aae4010ff6a5 is the first bad commit
commit aa519f231d4ce3ad20932cbd2bb1aae4010ff6a5
Author:     Ville Syrjälä <ville.syrjala@linux.intel.com>
AuthorDate: Fri Jun 13 13:37:55 2014 +0300
Commit:     Daniel Vetter <daniel.vetter@ffwll.ch>
CommitDate: Mon Jul 7 11:28:22 2014 +0200

    drm/i915: Pull the cmnlane tricks into its own power well ops

    Remove the clutter in __vlv_set_power_well() by moving the cmnlane
    handling into custom enable/disable hooks for the cmnlane.
Comment 3 liulei 2014-07-24 02:23:55 UTC 
Ping Ville Syrjala, any update?
Comment 4 U. Artie Eoff 2014-08-11 16:00:18 UTC 
Do the patches on bug 81948 fix this?  They did for me.
Comment 5 liulei 2014-08-12 01:10:13 UTC 
(In reply to comment #4)
> Do the patches on bug 81948 fix this?  They did for me.
Yes, this patch works.
Comment 6 liulei 2014-08-22 01:22:38 UTC 
Latest -nightly kernel(49ceddc7b3b0e3f7eb21b9fb4c9b840cff630047) works well when machine resume from s3.
Comment 7 liulei 2014-08-22 01:25:46 UTC 
I think we can close this bug.
Comment 8 Jari Tahvanainen 2016-10-19 12:44:04 UTC 
Closing verified+fixed.

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