[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 #84 from Peter Frühberger <fritsch at xbmc.org> ---
Quite easy,

build latest master (helix beta1) via
https://github.com/xbmc/xbmc/commits/master or use a nightly ppa. Enable VAAPI
(disable VDPAU). Under Video -> Acceleration, check that "Prefer VAAPI Render
Method" is enabled, which is the default. You need to switch the settings
hierarchy to "Expert" to see those settings.

You can highly provoke that error by watching interlaced content and using
Motion Compensation Deinterlacing with VPP ontop. 

Beware, there is no release vaapi driver that supports this yet, you need to
use: http://cgit.freedesktop.org/vaapi/intel-driver/log/ e.g. the master
branch, Gwenole repaired the driver (vebox fixes) some months ago and pushed
the results into libva master branch last week.

While playing such an interlaced video, press return, select the video film
role and activate Deinterlace: Auto Deinterlace-Method: Moption Compensation
Deinterlacing. Save for all files.

Now wait <= 10 minutes and see it hanging.

Btw. using vpp deinterlacing seems to stress the GPU more, so you don't need to
keep it running for hours (as it would be with progressive content).

You need a Celeron HSW platform to reproduce. On my Core Systems the issue
nearly never happens.

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