Comment 37 for bug 78470

still get it with the Kubuntu Karmic RC1( ati 200M laptop ) after an kubuntu 9.04 upgrade but also from a liveCD. There's no xorg.conf by default and it does it so I created a simple one and still get it with both "ati" and "radeon" xorg drivers. But, it does not happen I used "vesa"

I've also tried a bunch of individual things like vga=791 in grub boot, and each of the items in the following xorg.conf file individually and as a group. FYI, turning off AIGLX reduced idling CPU usage from about 40% down to the single digits.

Section "Device"
 Identifier "Configured Video Device"
 #Driver "radeon"
 #Driver "vesa"
 Driver "ati"
EndSection

Section "Monitor"
 Identifier "Configured Monitor"
EndSection

Section "Screen"
 Identifier "Default Screen"
 Monitor "Configured Monitor"
 Device "Configured Video Device"
EndSection

Section "Extensions"
 Option "Composite" "0" # disable
EndSection

Section "Module"
 Load "glx"
EndSection

Section "ServerFlags"
 Option "AIGLX" "off"
 Option "blank time" "0"
EndSection

Section "DRI"
 Mode 0666
EndSection