It's difficult to reproduce .
I manually install Nvidia 9800GT driver on Ubuntu 10.10 x64,then I upgrade to Ubuntu 11.04 through network.It can't display desktop.
Then I uninstall Nvidia driver,reset xorg.conf,reboot,see 800x600 desktop,install Nvidia driver through Ubuntu system tools,reboot,unistall and install Nvidia driver in recovery mode,again and again,at last,I can see 1600x900 desktop.
But sometime It crash.
It's difficult to reproduce . reboot, see 800x600 desktop,install Nvidia driver through Ubuntu system tools,reboot, unistall and install Nvidia driver in recovery mode,again and again,at last,I can see 1600x900 desktop.
I manually install Nvidia 9800GT driver on Ubuntu 10.10 x64,then I upgrade to Ubuntu 11.04 through network.It can't display desktop.
Then I uninstall Nvidia driver,reset xorg.conf,
But sometime It crash.