Bug 102374

Summary: [BAT] igt@kms_frontbuffer_tracking@basic Failed assertion: !mismatch
Product: DRI Reporter: Martin Peres <martin.peres>
Component: DRM/IntelAssignee: Mika Kahola <mika.kahola>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: critical    
Priority: highest CC: intel-gfx-bugs, marta.lofstedt
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard: ReadyForDev
i915 platform: BDW, CFL, CNL i915 features: display/Other

Description Martin Peres 2017-08-23 13:57:04 UTC 
During a pre-merge run, the test igt@kms_frontbuffer_tracking@basic failed on fi-bdw-gvtdvm with the following error:
 	
(kms_frontbuffer_tracking:3702) igt-debugfs-CRITICAL: Test assertion failure function igt_assert_crc_equal, file igt_debugfs.c:325:
(kms_frontbuffer_tracking:3702) igt-debugfs-CRITICAL: Failed assertion: !mismatch

There is good confidence from developers that this failure is not due to the patch series, hence why I am filing it.

Full logs: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_5473/fi-bdw-gvtdvm/igt@kms_frontbuffer_tracking@basic.html
Comment 2 Elizabeth 2017-09-07 14:50:31 UTC 
These seem to be hitting the same problem than bug 101309, it could be a dup.
Comment 4 Marta Löfstedt 2017-09-22 13:26:36 UTC 
*** Bug 102947 has been marked as a duplicate of this bug. ***
Comment 6 Marta Löfstedt 2017-09-25 05:52:39 UTC 
(In reply to Jani Saarinen from comment #5)
> Also seen on CNL now:
> https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3123/fi-cnl-y/
> igt@kms_frontbuffer_tracking@basic.html

Jani, this is why Bug 102947 is a duplicate of this.
Comment 7 Jani Saarinen 2017-09-28 06:16:23 UTC 
Reference to patch: https://patchwork.freedesktop.org/series/31023/
Comment 8 Jani Saarinen 2017-09-28 08:18:06 UTC 
At least fixes issue on CNL
Comment 10 Mika Kahola 2017-09-28 08:19:53 UTC 
Fixes also the issue with my GLK+MIPI/DSI system
Comment 11 Rodrigo Vivi 2017-09-28 16:56:38 UTC 
Patch merged to dinq.
Thanks for spotting this, all ideas, review and testing.

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