video problem on powerbook g4 in squeeze

[drz <drz@rizzux.org>]

hi

Ive got a problem with videos in debian powerpc (squeeze uptodate) on a 
powerbook g4

video card is:
 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 
M10]

symptoms:
If I watch video (no matter which player I use (mplayer and vlc)) I get a 
picture that is vertically 'distorted'. Kind of every 5 pixels 
(horizontically) the picture is moved 5 pixels (vertically)

Anybody got an idea how to fix that?

thx
drz

# cat /etc/X11/xorg.conf

Section "ServerFlags"
    Option	"DontZap"	"off"
    Option	"AutoAddDevices"	"off"
EndSection

Section "InputDevice"
    Identifier 	"Generic Keyboard"
    Driver	"kbd"
    Option	"XkbRules"	"xorg"
    Option	"XkbModel"	"pc105"
    Option	"XkbLayout"	"de"
    Option	"XkbVariant"	"nodeadkeys"
    Option	"XkbOptions"	"lv3:lwin_switch"
EndSection

Section "Device"
    Identifier	"Configured Video Device"
    Driver	"radeon"
#    Option	"AGPMode"	"4"
#    Option	"AGPFastWrite"	"on"
    Option	"EnablePageFlip"	"on"
    Option	"AccelMethod"	"EXA"
EndSection

#Section "Extensions"
#    Option	"Composite" "Enable"
#EndSection