Originally Posted by TheAccountant

I believe that it could be due to how the acceleration mode used by xorg.conf.

Take a copy of /etc/X11/xorg.conf in case it breaks and you need to restore it!

add the line:

Code:

Option "AccelMethod" "EXA"

In Section "Device"

EDIT::

If that doesnt work, try

Code:

Option "AccelMethod" "XAA"

You could also try adding the following section into xorg.

Code:

Section "Extensions"
    Option "Composite" "enable"
EndSection

Thanks.