[Bug 104764] [SKL] GPU HANG: ecode 9:0:0x85ddfffb, in vlc [2828], reason: Hang on rcs0, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104764

--- Comment #12 from Björn Stenberg <bjorn at haxx.se> ---
I don't know how to help more. I completely understand this can't easily be
debugged without reproduction, but I am not familiar enough with these
subsystems to know what details to investigate and share. If you can think of
anything, please tell me.

One minor timing detail is that before vlc hangs, it outputs these lines:

VLC media player 3.0.0-rc7 Vetinari (revision 3.0.0-rc7-0-gd427a9f90f)
[000055d66dd46a30] main libvlc: Running vlc with the default interface. Use
'cvlc' to use vlc without interface.
libva info: VA-API version 1.0.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_1_0
libva info: va_openDriver() returns 0

Then all graphics except the mouse pointer freezes. When I run "killall -9
vlc", first nothing happens for a few seconds and then as the graphics resumes
and the vlc window vanishes, one more line appears on the terminal:

[00007f154cc18290] avcodec decoder: Using Intel i965 driver for Intel(R)
Skylake - 2.0.0 for hardware decoding

I have no idea if this information is useful or not... :-)

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