Intel GMA 900 & XVideo Accelleration (i810 drivers)

[Andrew Barr]

On Sun, 2006-09-10 at 10:29 -0700, galenz at zinkconsulting.com wrote:
> Hello,
> 
> I have a machine with the Intel GMA 900 graphics chipset. It works  
> beautifully under Linux... except I'm still struggling to get video  
> playback acceleration working with VLC.
> 
> I have three sample clips, played in VLC 0.8.4a under Fedora Core 5.  
> One DVD-resolution and bitrate, and two HD bitrate clips, one 720p  
> and another 1080i. With X11 Video output, the sample clips works  
> perfectly, but are CPU intensive and/or choppy.
> 
> I want to use XVideo output, because my chipset supports XVideo and  
> Xvideo motion compensation. I found the DVD resolution clip worked  
> fine out of the box. But the HD clips didn't - VLC would segfault. As  
> far as I can tell, VLC is fairly well coded, so things should  
> generally work.

Are you sure it is segfaulting or is it encountering an X server error?
If the latter is the case, you should set the LinearAlloc parameter for
the i810 driver. See 'man i810' for the right values for HD playback.