Ubuntu
xserver-xorg-video-ati package

  1. Bug #426582
  2. Comment #74

Comment 74 for bug 426582

Revision history for this message
Clay Weber (claydoh) wrote : Re: (32MB) certain windows drawn garbled when XAA is used

I am assuming mistr has similar hardware as my Compaq Evo N610c laptop, which only has 32mb vram (dedicated card, not shared)

01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
        Subsystem: Compaq Computer Corporation Device 00b7
        Flags: bus master, stepping, 66MHz, medium devsel, latency 66, IRQ 11
        Memory at 48000000 (32-bit, prefetchable) [size=128M]
        I/O ports at 3000 [size=256]
        Memory at 40400000 (32-bit, non-prefetchable) [size=64K]
        [virtual] Expansion ROM at 40420000 [disabled] [size=128K]
        Capabilities: [58] AGP version 2.0
        Capabilities: [50] Power Management version 2
        Kernel modules: radeon, radeonfb

To fix this problem, I simply needed to create an xorg.conf with this:

 Section "Device"
 Identifier "Configured Video Device"
 Driver "radeon"
 Option "AccelMethod" "XAA"
 Option "RenderAccel" "off"
 Option "EnablePageFlip" "true"
EndSection

The EnablePageFlip seems to remedy some graphical artifacts during Kubuntu's login

As a side note, in Kubuntu all the plasma components show this graphical corruption: the taskbar, main menu, window decorations, etc.