Older ATi Card and Ubuntu

I have been using VESA driver instead of ATi driver for my old IBM Notebook due to the corrupted notification problem in Ubuntu.

Today, I have found the following from the Ubuntu site, which may seem to be the solution for my problem.

Window corruption with older ATI graphics cards

With older ATI graphics cards with 32MB or less of video RAM some corruption of direct rendered windows, for example OSD notifier windows, might appear. This may be worked around by disabling 'RenderAccel' in the Xorg configuration. (426582)

To do this first exit to the console using the following command:

sudo service gdm stop

Then create an Xorg configuration file with the command below:

sudo Xorg -configure

Then add the 'RenderAccel' option to /etc/X11/xorg.conf:

Section "Device"

...

Driver "radeon"

Option "RenderAccel" "off"

EndSection

And restart X/GDM.

sudo service gdm start