Upstream says something outside X is probably polling every 30 sec looking for monitors. This is unnecessary since the kernel automatically fires events when a monitor gets connected/disconnected.
Best guess is a daemon like upowerd or keventd is running. Look in `ps aux` to see if you have one of these running, and see if you shut it down or kill it if the bad behavior stops. If not, look for other daemons, services, or clients you might be running which could be polling for monitors and try killing them off one by one to narrow what is causing the issue for you. ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/727979 Title: Screen flicker approx. every 30 seconds _______________________________________________ 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