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I had suddenly the above, well known error message, after rebooting and installing nvidia drivers (nvidia-current) the loading screen is full sized, but the login screen is 640x480. And after logging in also the same screen size. How to raise screen size settings, I even dont have menu only comman line in this small resolution.

I tried xrandr but no success. Any idea? v12.10

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thank you Web-E, worked. – subdesign Jan 17 '13 at 9:52
@Web-E post it as an answer if you've got time (and so you get credit for the solution), so that the question can be marked as answered :) – Oyibo Jan 17 '13 at 10:00
If its solved please mark the answer as good by pressing the small check mark next to it, dont edit the tile to reflect it. – Bruno Pereira Jan 17 '13 at 10:07
up vote 1 down vote accepted

Remove xorg.conf file and try rebooting.

Use the below command to rename the original file. So that if this change cause any problem, you can revert back.

sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

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