Bug 94768

Summary: [SKL] GPU hang running lightsmark
Product: DRI Reporter: Timo Aaltonen <tjaalton>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED DUPLICATE QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: SKL i915 features:
Attachments:
Description Flags
hang dump none

Description Timo Aaltonen 2016-03-31 14:35:28 UTC 
Created attachment 122648 [details]
hang dump

Running lightsmark 2.0 on SKL-U hangs the GPU quite frequently, eventually freezing the machine.

kernel 4.4.6 + i915 from 4.6-rc1
mesa 11.2.0-rc4
intel: git
xserver 1.18.2+fixes

hw is UMSK9KSUQ (SKL-U benchtop), with latest bios available (100.1)
Comment 1 Timo Aaltonen 2016-04-01 06:27:02 UTC 
disabling rc6 works around the issue

KBL GT2 works fine with the same stack, btw
Comment 2 Timo Aaltonen 2016-04-01 06:37:10 UTC 

*** This bug has been marked as a duplicate of bug 94161 ***

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