No video output after boot with nvidia driver and lucid.

[Federico]

Hi,
I have a Nvidia N210 and I'm using the nvidia proprietary driver with
lucid, after the splash screen instead of the loading GDM the screen
turn off saing "No video output", I've tried using either the DVI
output or the VGA port but nothing changed. (With karmic it worked
like a charm with DVI output)

When the monitor goes to power saving mode my system seems frozen, any
combination of keys even the Magic SysRq doesn't work.
If I use nouveau driver ubuntu starts well although the screen
resolution is incorrect. So I think  the problem is the nvidia
proprietary driver.
I've also opened a bug on launchpad [0] and wrote on ubuntuforums [1]
but nobody answered me.

Any help is very appreciated, thank you in advance!

[0] https://bugs.launchpad.net/ubuntu/+bug/573837
[1] http://ubuntuforums.org/showthread.php?t=1470981