[Bug 83677] [HSW] GPU HANG: ecode 0:0x87d3bffa on ctx load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83677

--- Comment #81 from Peter Frühberger <fritsch at xbmc.org> ---
Never the less I think you are onto somethin.

[  869.806084] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  869.806084] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  869.806085] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  869.806086] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[  974.865662] [drm] stuck on render ring
[  974.869560] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 1248.988099] [drm] stuck on render ring
[ 1248.992108] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 1354.039617] [drm] stuck on render ring
[ 1354.043649] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 1472.097518] [drm] stuck on render ring
[ 1472.101540] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 2204.468693] [drm] stuck on render ring
[ 2204.472663] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 2430.567575] [drm] stuck on render ring
[ 2430.571278] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 3101.896809] [drm] stuck on render ring
[ 3101.900614] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 5090.884258] [drm] stuck on render ring
[ 5090.888231] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset
[ 5402.024853] [drm] stuck on render ring
[ 5402.028782] [drm] GPU HANG: ecode 0:0x87d3bffa, in kodi.bin [858], reason:
Ring hung, action: reset

It seems (no scientific proof) the hang occurs even more frequently with the
patch applied. Every HANG one can see there will freeze the render for a
specific amount of time - which has a huge visual impact.

Happy to test other ideas.

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