Bug 91324

Summary: Sporadic hangs with moveable mouse cursor on kernel 4.0 complete hangs if using 4.1
Product: DRI Reporter: oliver.pahl
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: major    
Priority: medium CC: intel-gfx-bugs
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: BDW i915 features: GPU hang
Attachments:
Description Flags
lspci output, syslog output and errordum of the graphics card none

Description oliver.pahl 2015-07-13 10:50:06 UTC
Created attachment 117086 [details]
lspci output, syslog output and errordum of the graphics card

I have a Thinkpad Yoga 12 with a Intel GMA HD5500. Using kernel 4.0.7 I see sporadic hangs in Xorg where I can still move the mouse cursor and navigate to virtual terminals. Using kernel 4.1.1 the hang occurs more frequently and the system has to be restarted. This report is for the former, as the kernel for the latter is not officially approved by arch and as such I wait for the released version before filing another report. I also have to enable i915.preliminary_hw_support=1, otherwise I am not able to switch to virtual terminals without having serious flickering.
Comment 1 Jani Nikula 2015-08-20 13:44:13 UTC
Broadwell hasn't required i915.preliminary_hw_support=1 module parameter since v3.14.
Comment 2 yann 2016-09-28 12:45:19 UTC
We seem to have neglected the bug a bit, apologies.

There were improvements pushed in kernel and Mesa that will benefit to your system, so please re-test with latest kernel & Mesa and without i915.preliminary_hw_support=1 to see if this issue is still occurring.
Comment 3 yann 2016-11-18 12:55:35 UTC
(In reply to yann from comment #2)
> We seem to have neglected the bug a bit, apologies.
> 
> There were improvements pushed in kernel and Mesa that will benefit to your
> system, so please re-test with latest kernel & Mesa and without
> i915.preliminary_hw_support=1 to see if this issue is still occurring.

Timeout. Assuming that it is fixed by now. If this is not the case, please re-test with latest kernel & Mesa (12-13) to see if this issue is still occurring since there were improvements pushed in kernel and Mesa that will benefit to your system, and fill a new bug.

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