[Intel-gfx] HD (x)video troubles

[Jin, Gordon]

David Amiel wrote on Wednesday, July 22, 2009 6:20 AM:
> Hello,
> 
> Le Mar 21 juillet 2009 22:43, Arne a écrit :
>> Hello there,
>> 
>> we are working on an "embedded" platform displaying images from a
>> firewire-camera in realtime and replaying recorded videos with a
>> resolution of 1280x1024. On our current platform (945GME) we get
>> flaws (small video lags every 20-25 secs) when we put the camera at
>> 30 fps, so we stay at 29 fps, which is suboptimal sadly. So, this
>> week, we got a new mainboard with a GM45 chipset, and it got even
>> worse - I think it's something like the horizontal tearing bug I
>> read about in this list
>> (http://lists.freedesktop.org/archives/intel-gfx/2008-December/000745.html).
>> 
>> For info, we're using a minimal debian system (ratpoison as
>> windowmanager, awesome btw ;) ), our current platform uses etch and a
>> custom 2.6.24 kernel with debian's i810 driver. On the test platform
>> I got the tearing bug with both stock debian kernel 2.6.26 (lenny)
>> and custom 2.6.28.9, using lenny's 2.3.2 intel driver. Lastly, I
>> tried with debian unstable and the 2.6.30 kernel, but X crashes on
>> the second startup, with driver version 2.7.1 and 2.7.99.
>> Finally, our program displaying the camera images uses XVideo, so
>> we're stuck with that for now. 
>> 
>> I am going to try driver verrsion 2.5.1 tomorrow (cf
>> http://lists.freedesktop.org/archives/intel-gfx/2008-December/000818.html),
>> but am willing to do tests on other versions. I can post
>> xorg.conf/logs tomorrow as well.
> 
> I've got a G45 and I've the same problems as you.
> 
> The last working driver is 2.5.1, but you'll have some bad tearing
> with it To be able to use a 2.6 driver I've to disable GEM (I've put
> a patch in attachment for example on how to do this), it works but
> there is soft tearing
> For instant I didn't manage to have a successfully working 2.7 or 2.8
> driver, xorg crashes at start
> 
>> For now, I have just a simple question - is there any kernel/driver
>> combination you would recommend for HD video playback using xvideo on
>> either of those boards ?
> 
> as tearing free feature seems important for you, the only combination
> I know to reach this is to have an old intel graphic card (with
> overlay hardware inside), with an old driver where you can force the
> use of the overlay over the textured mode

Arne and David,

The textured video tearing issue is expected to be fixed in 2009Q2 release.

And I don't remember to have received the bug reports for xorg crash on G45 or 945GME. Could you file a bug if it still fails with 2009Q2 release?

Thanks
Gordon