[mythtv-users] Intel 2405s GPU hang using vaapi in Mythtv

william otten williammotten at gmail.com
Tue Dec 24 16:48:54 UTC 2013


I currently have a gpu hanging problem while using mythtv and vaapi on an
Intel Core i5-2405S. I have tried using different versions of vaapi, Ubuntu
and Debian and I am currently working with someone at Intel via
freedesktop.org. Here is the bug report:
https://bugs.freedesktop.org/show_bug.cgi?id=71276

Basically Intel has acknowledged the issue and is working on a solution.
They have issued a patch for vaapi to remedy the gpu hang error which they
say works in Mplayer for them. I tried the patch but the original issue
still exists using Mythtv. I also tried the patch using VLC and the issue
seems to be fixed where as prior VLC confirmed the Mythtv error. At this
point there seems to be two video programs that work with the solution and
one that doesn't. This is where I need some help from the Mythtv group
since Intel has kinda halted on their end.

Another issue has arisen while working on a solution for the gpu hang
error. During the last test using Mythtv the patch as well as Intel's
experimental vaapi libva 1.2.2.pre2. The overall video quality changed,
here is what I posted..."The video is now corrupted. The color is off.
Reds, blues, etc...are not balanced but very bold on certain parts of the
video. Kinda reminds me of sepa for a photo but with color extremes." I
again tested with VLC with no problems. Also Intel doesn't have this issue.
Here is a photo of the issue:
https://dl.dropboxusercontent.com/u/17574275/Mythtv%20screen%20problem%20using%201.2.2.prel.png

So currently I have two issues that hopefully I can get some feedback from
the group.
I tested mythtv vaapi with and without de-interlacing, without any
difference. Also VLC had vaapi enabled during testing.
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