I'm actually experiencing the same problem on a Dell PowerEdge 2850 server. It has an ATI 7000ve card. My computer locks up as soon as I login, forcing me to hard reboot. I tried changing my driver from 'ati' to 'radeon' which worked for a while. then i tried to vnc from a remote machine and the problem happened again. So now I'm going to try changing the driver to Vesa, and then try commenting out the Load "dri" line.
I'm actually experiencing the same problem on a Dell PowerEdge 2850 server. It has an ATI 7000ve card. My computer locks up as soon as I login, forcing me to hard reboot. I tried changing my driver from 'ati' to 'radeon' which worked for a while. then i tried to vnc from a remote machine and the problem happened again. So now I'm going to try changing the driver to Vesa, and then try commenting out the Load "dri" line.