Re: Problems with bttv/xawtv and matrox G200PCI in overlay mode

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On Wed, 18 Jul 2001, Eric Jorgensen wrote:

> Roger Abrahamsson wrote:
> > 
> > Hello.
> > 
> > I have the following setup
> > 
> > 2.4.6-ac1 kernel, bttv module from the kernel. XFree86 4.0.3
> > Matrox G200PCI+TVout
> > MiroVideo PCTV
> > I run X at 1600x1200 24bit color, agpgart and dri in kernel.
> > 
> > When I try and watch tv in X, and not use grabdisplay but overlay, I get 4
> > separate images outside the xawtv window, looking like 4 separate
> > bitplanes really. Anyone know if there is any way to solve this, as it's
> > really bogs down the computer not being able to use overlay mode.
> 
> 
> 	Why have you compiled agpgart into your kernel when you don't have an
> agp display? 
> 
>  - Eric

Apparently agpgart is 'required' for DRI, and the card do get detected by
X and is said to be a PCI card, but also as AGP 1x and DRI seems to use
this as well as Xvideo extensions. Watching divx is no problem, it gets
placed correctly in the intented window, and hardware scaling also seems
to work fine there. But it's when I try to watch tv with xawtv it all
breaks apart. Watching tv with fbtv in a console window works fine though,
but I'd like to have it on the side when I work in X.

So, why is there four separate half transparent tv images spread over my
screen side by side?? It seems like there is some offset error of some
kind??

Any ideas??

/Roger









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