[mythtv-users] MythTV experience with Intel Sandy Bridge graphics

Matt Garman matthew.garman at gmail.com
Mon Jan 16 17:35:06 UTC 2012

On Sun, Jan 15, 2012 at 7:38 PM, Nick Rout <nick.rout at gmail.com> wrote:
> On Mon, Jan 16, 2012 at 2:35 PM, Matt Garman <matthew.garman at gmail.com> wrote:
>> This is why I'm really interested in getting a Sandy Bridge-based
>> FE going.  I underclocked my memory from 1333 to 1066
> As a casual observer, this may have something to do with under performance?

Are you suggesting because of my memory underclock?  Or the CPU/GPU in
general?  As for the memory clock, there's no perceivable difference
in playback with the memory clocked at 1333 or 1066.  I.e., tearing
still exists with the memory at the higher speed and voltage.

As for the CPU/GPU performance: this hardware combination works just
fine for all kinds of playback (including high bit rate Bluray) on
Windows.  So I really don't think it's a hardware limitation.

> Have any of you used the combination of master and vaapi?

By "master" are you referring to the svn 0.25 dev branch of mythtv?
AFAIK that's the only way to get vaapi support in myth.

Is it possible to run the stable 0.24 fixes on the backend and
0.25-svn on the frontend?  If so, I might be willing to give it a try.
 But otherwise, I don't want to risk the stability of an otherwise
perfectly working system (too much WAF risk :)).

Anyway, I'll add: in the initial post of this thread, a
freedesktop.org mesa patch was mentioned that fixed the crashing issue
when using mythtv with opengl rendering.  I too have that crash (and
can't find the patch that was mentioned).  Interestingly though, if I
play videos using mplayer -vo gl (or gl2), the video plays fine
(without crashing).


More information about the mythtv-users mailing list