Video corrupt on Edgy 64-bit
 

Hi,

I'm trying to install Edgy 64 bit, but as soon as X loads, the screen becomes corrupt (Essentially its just pink vertical lines down the screen). Choosing the safe graphics option at the boot loader gets the same result. If I try different resolutions the corruption is different.

My config is:
Athlon 64 3500+
DFI NF4 Lanparty Ultra-D
Nvidia GeForce 6800GS PCI-Express
1Gb Geil Ultra-X DDR400

I have had this problem before with earlier versions of Linux distributions, and it is solved by installing the proprietary Nvidia drivers. However I can't do that in this case because the installation is done via Live-CD, and if you install the drivers and restart X it fails.

I have read of cursor/font/screen corruption problems using the nv driver with Nvidia 6 series PCI-Express cards and 64-bit Linux, however the workaround for that issue -
Option "SWCursor"
Option "NoRenderExtension"
in the xorg.conf - does not work.

I've seen a couple of threads in the Ubuntu forums with people who have this exact problem, but their calls for help were not answered - I'm hoping to have more luck here.

Thanks
Floyd

Found the solution
 

Thought I'd post the solution I found for this problem.

I tried changing the driver to some generic drivers and reloading X, vga didn't work, but vesa worked a charm. To do this

Once the corrupt graphics appear, press ctrl-alt-shift F1 to bring up a console. Type
sudo vi /etc/X11/xorg.conf

Under the device section, change the driver value from "nv" to "vesa".

Save your changes and hit ctrl-alt F7 to bring up X and the corrupt graphics. Press ctrl-alt-backspace to restart X and you should get a usable environment in which to install Kubuntu Edgy. Once it is installed you can install the proprietary nvidia drivers in the usual way.

Cheers
Floyd