nvidia-390 is not available in 14.04, so you're using unofficial packages, that's not supported
** Changed in: xorg (Ubuntu) Status: New => Invalid -- 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/1772370 Title: every time I install nvidia driver in my ubuntu14.04, it's goes wrong, To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1772370/+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