[elrepo] Intel video on CentOS 6.4: got the 'GPU hung' error :-(

[Andrey Zhunev]

Hello Matt,

Wednesday, October 9, 2013, 12:03:28 AM, you wrote:

> I created a playback profile in MythTV that basically just uses
> opengl for everything where applicable, and ffmpeg (i.e. software)
> for decoding.  IIRC, I think I have de-interlacing disabled, as
> either broadcast in my area is not interlaced, or my TV does it for
> me.  It sounds like de-interlacing is a hard requirement for you, so
> you'll have to do experiments to see if the CPU alone is good enough
> (well, I'm sure it can do basic de-interlacing, but I guess the
> question is, can it do the same quality as vaapi or vdpau).
>
> I'm not at home now, and can't remember the exact settings of my
> playback profile, but can send them to you later if you're
> interested.  I'd bet that the only reason you'd need to go back to
> nvidia is if your CPU can't do deinterlacing to your standard.

Yeah, would be nice to know a playback profile that works for you.
Thanks! :)



> Depending on how much time you have, you could also try to debug
> the Intel vaapi issue.  It's been a while since I've asked around on
> various forums for help... maybe it's worth another round of asking around various community forums?

I did some searching, but found no solution.
There was a suggestion to enable (or disable?) 'semaphores'. Some
people reported it helped to reduce the problem, but did not fix it
completely. On the other hand, some people reported complete system
lock-ups when using this workaround, which is not good for me at all.

There were multiple kernel patches suggested, non of which seem to
solve the problem.

In fact, the more I search on the topic, the more complicated it gets.
It looks like even newer kernels with latest drivers are also affected:
https://bugzilla.redhat.com/show_bug.cgi?id=879823




> I was going to try to hack elrepo's xorg-x11-drv-intel source rpm
> to build against my supporting packages (i.e. all from
> upstream/CentOS repos), as well as with the newest intel driver
> source, and see what happened.  That's if I can find the time...
>  

Latest Intel driver refused to compile 'out of the box' on my CentOS.
But I didn't have time to look into it, so maybe it's something
obvious that can easily be fixed.

On the other hand, looking at the similar 'GPU hangs' other people
get, I doubt the latest driver will fix this issue...


Andrey