Public bug reported: I am running unity system compositor on my desktop in dual screen mode with Intel HD 2500 graphics.
When I play video, even when it's halted and the media player window (vlc and mplayer) is on another work place, the screen flickers black. I was able to find the following messages in /var/log/Xorg.0.log: [ 8967.357] (II) Setting DPMS mode for output 1 to 0 [ 8967.884] (II) Setting DPMS mode for output 3 to 0 [ 8972.730] (II) Setting DPMS mode for output 1 to 0 Watching the file with tail -f gives one or two new lines of these messages after each flicker. I experience this only on my desktop in dual screen mode, not on my laptop that also uses Intel graphics (HD 4000) and is currently running saucy. ** Affects: unity-system-compositor (Ubuntu) Importance: Undecided Status: New ** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/bugs/1238886/+attachment/3874928/+files/Xorg.0.log ** Description changed: I am running unity system compositor on my desktop in dual screen mode with Intel HD 2500 graphics. When I play video, even when it's halted and the media player window (vlc and mplayer) is on another work place, the screen flickers black. I was able to find the following messages in /var/log/Xorg.0.log: [ 8967.357] (II) Setting DPMS mode for output 1 to 0 [ 8967.884] (II) Setting DPMS mode for output 3 to 0 [ 8972.730] (II) Setting DPMS mode for output 1 to 0 Watching the file with tail -f gives one or two new lines of these messages after each flicker. + + I experience this only on my desktop in dual screen mode, not on my + laptop that also uses Intel graphics (HD 4000) and is currently running + saucy. -- 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/ubuntu/+source/unity-system-compositor/+bug/1238886/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs