I experience similar problem with gnome-mplayer on single computer with intel graphics and there is also a lot of DPMS logs. According this bug https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1231857
xset dpms force on xset dpms force on xset dpms force on causes screen flickers. ** Changed in: xmir Status: New => Confirmed ** Changed in: unity-system-compositor (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1238886 Title: Screen flickers black during video playback on Intel graphics in dual screen mode To manage notifications about this bug go to: https://bugs.launchpad.net/unity-system-compositor/+bug/1238886/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs