I installed 12.04 and my system works fine. But after updating packages with the update manager, problems occurred.
I can't activate the Nvidia drivers (Control Center -> Additional Drivers). When I try to activate them, I get a error:
Sorry, installation of this driver, failed.
The error indicates a log file, /var/log/jockey.log. I have seen:
WARNING: modinfo for module nvidia_current failed: ERROR: modinfo: could not find module nvidia_current
ERROR: XorgDriverHandler.enable(): package or module not installed, aborting
I have tried with 295.33 and 295.40. But it doesn't work.
I have tried to reconfigure xorg.conf, with a lot of parameters. But I haven't got that it works. And I have tried to create a monitors.xml on /config, with the correct resolution, but when I log, I get another error: resolution not compatible.
But before the update, that config works fine.