Closing again. In my case this was probably caused by a hardware failure: the fan on the graphics card had died.
** Changed in: nvidia-graphics-drivers-180 (Ubuntu) Status: New => Invalid -- Display gets corrupted and garbled every 5-7 minutes when using compiz. VT switch which takes ~1min required to reset screen https://bugs.launchpad.net/bugs/309739 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ 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