Bug#441902: xserver-xorg-video-ati: 6.7.192-1~7.2 crashes xserver with xv video playback on compiz

[Michel Dänzer]

On Sun, 2007-09-16 at 12:33 -0400, Alec Robertson wrote:
> 
> > You should try removing all these options.
> 
> Is there any reason these would cause problems?

Generally, the intention is for the defaults to be safest, and changing
them incurs a certain risk.


> * a recommendation I found somewhere (is this necessary?)
> >>    Option      "GARTSize"         "64"         # default is 8 Mb

The default may be too small for demanding 3D applications with the r300
Mesa driver.


> * improve power consumption (I'm on a laptop, does this cause problems)

It can cause problems on some hardware setups.

> >>    Option      "DynamicClocks"    "on"         # default is off (on=faster?)

The purpose is to save power by automatically disabling the clocks of
idle GPU blocks. This can't increase performance but may decrease it
slightly in some situations.


> * I use radeonfb and the man page says I can turn this off (problems?)
> >>    Option      "VGAAccess"        "off"        # default is on (not required for radeonfb)

I wouldn't use this on your machine, it's mainly for powerpc machines
where legacy VGA access just doesn't work.


> > You should try EXA instead of XAA too (especially with Xserver 1.4).
> 
> I've been trying this on and off, but with my compiz desktop, EXA is
> terribly slow to draw the windows.

As of X.org 7.3, compiz should be faster with EXA than with XAA with the
r300 Mesa driver.


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer