Bug 109176

Summary: GPU hang on v4.20-rc5 on thinkpad x220
Product: DRI Reporter: zblabunk
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED WORKSFORME QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: normal    
Priority: medium CC: intel-gfx-bugs
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard: Triaged
i915 platform: SNB i915 features: GPU hang
Attachments:
Description Flags
dmesg
none
/sys/class/drm/card0/error none

Description zblabunk 2018-12-29 20:14:50 UTC
Created attachment 142916 [details]
dmesg

Another problem on X220.

Chromium was running with youtube video playing.

[31850.666274] [drm] GPU hangs can indicate a bug anywhere in the
entire gfx stack, including userspace.
[31850.666277] [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel
[31850.666279] [drm] drm/i915 developers can then reassign to the
right component if it's not a kernel issue.
[31850.666282] [drm] The gpu crash dump is required to analyze gpu
hangs, so please always attach it.
[31850.666285] [drm] GPU crash dump saved to
/sys/class/drm/card0/error
[31850.666394] i915 0000:00:02.0: Resetting chip for hang on rcs0
[31850.668474] WARNING: CPU: 0 PID: 13675 at
/data/fast/l/k/include/linux/dma-fence.h:503
i915_request_skip+0x71/0x80
[31850.668478] Modules linked in:
[31850.668484] CPU: 0 PID: 13675 Comm: kworker/0:3 Not tainted
4.20.0-rc5+ #5
[31850.668487] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET74WW
(1.44 ) 03/13/2018

Dmesg and /sys/class/drm/card0/error are attached.
Comment 1 zblabunk 2018-12-29 20:15:37 UTC
Created attachment 142917 [details]
/sys/class/drm/card0/error
Comment 2 Chris Wilson 2018-12-29 20:47:48 UTC
blt commands on the rcs; more than likely a secondary effect of the list bogons.
Comment 3 Lakshmi 2019-02-13 11:45:40 UTC
Reporter, how often you see GPU hang if not random? Are there any specific steps to reproduce this issue?
Comment 4 Lakshmi 2019-03-07 12:54:11 UTC
Reporter, can you answer to Comment 3?
Comment 5 Lakshmi 2019-04-12 08:47:17 UTC
No feedback from more than 2 months. Closing this bug as WORKSFORME.
If this issue happens with latest drmtip, please attach dmesg from boot and error file. ALso, following information would be useful:
How often it occurs the hang?
Any particular way to reproduce this issue?
What is the impact of this bug? Needs a force reboot after hang or system recovers after hang?

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