The -nvidia driver does not support RANDR 1.2, which the stock display configuration tool requires for detecting monitors and so on. That's why monitors show up as unknown and resolutions are sometimes not found. With -nvidia you have to use their nvidia-specific configuration tool.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/990492 Title: Not detect the monitor or graphics card Ubuntu 12.04 LTS 64Bit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/990492/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp