You appear to have the 'oibaf' PPA installed which is not supported and is known to cause bugs.
Please use the 'ppa-purge' tool to remove that PPA from the system, then reboot and if you experience any more problems then open a new bug. ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: 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/1908071 Title: The video card driver is not working well To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1908071/+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