Comment 2 for bug 584202

Did some extra digging,

https://wiki.ubuntu.com/X/Drivers
Followed the instructions to install fglrx drivers.

When I ran the command:
sudo update-alternatives --config gl_conf

An interesting list shows up:
Nvidia driver is at priority 9700
fglrx driver is at priority 1000
Vesa driver is at priority 600 (Can't remember exact)

This probably means the driver I'm using now is nvidia running on my ATi mobility radeon card. Don't understand how it works but it has been working ever since I upgraded.

Subsequently, I switched to fglrx (manual) and followed the instructions.

When I ran the command:
aticonfig --initial

Output:
Compatible adaptor not found

I then restarted the system
It seemed to work, except the screen resolution is a bit screwed(no wide-screen ratio)
But effects still doesn't seem to work, didn't try blender nor ran diagnostics for checks.

So I changed back to nvidia through the terminal.
When I switched back, some new messages popped:
failed to create /usr/lib32/vdpau/libdvpau_nvdia.so.1
libdvpau_nvdia.so.1 not found
failed to create /usr/lib32/vdpau/libdvpau_nvdia.so
libdvpau_nvdia.so not found

I checked into /usr/lib/nvidia-current/vdpau/
there is a link to both files, but the link seem to link to some non-existent library.

I restarted again this time after switching.
This time it screwed up my graphical interface.
After the purple screen boot up to desktop, my screen went blank.
Instinctively I tried ctrl+alt+F1. It went to console, works.
Tried back ctrl+alt+F7. It went back to desktop, with the colours extremely broken. It seems certain colours are out of range and displayed very weirdly. Screen aspect ratio is also wrong.

Tried to install back the driver packages through synaptics to ATi/Nvidia, was a failure. I'm stuck with a faulty display desktop in Lucid, that makes reading a little bit more than inconvenient for the eyes.

Subsequently, I installed Karmic back side-by-side. Karmic works fine, at this time of writing. I'm laying my Lucid dormant until, hopefully, someone with better expertise could help with this issue.