The problem occurs for me while I wasn't using my computer. Gnome put the monitor into standby. After moving my mouse the screen came back but it was like frozen. I could click on a launcher but it showed no reaction. Then I switched to tty1 and back to graphical desktop and the screen was alive again.
But everything was slow, If I take a look at Xorg.0.log I see the following messages. [ 5333.504] (WW) intel(0): I830DRI2GetMSC:1297 get vblank counter failed: Invalid argument [ 5333.504] (WW) intel(0): I830DRI2ScheduleWaitMSC:1364 get vblank counter failed: Invalid argument [ 5333.504] (WW) intel(0): I830DRI2GetMSC:1297 get vblank counter failed: Invalid argument [ 5333.504] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.524] (WW) intel(0): I830DRI2GetMSC:1297 get vblank counter failed: Invalid argument [ 5333.525] (WW) intel(0): I830DRI2ScheduleWaitMSC:1364 get vblank counter failed: Invalid argument [ 5333.525] (WW) intel(0): I830DRI2GetMSC:1297 get vblank counter failed: Invalid argument [ 5333.525] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.555] (WW) intel(0): I830DRI2GetMSC:1297 get vblank counter failed: Invalid argument [ 5333.555] (WW) intel(0): I830DRI2ScheduleWaitMSC:1364 get vblank counter failed: Invalid argument [ 5333.555] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.578] (WW) intel(0): I830DRI2ScheduleWaitMSC:1364 get vblank counter failed: Invalid argument [ 5333.579] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.612] (WW) intel(0): I830DRI2ScheduleWaitMSC:1364 get vblank counter failed: Invalid argument [ 5333.612] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.652] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5333.826] (WW) intel(0): first get vblank counter failed: Invalid argument [ 5338.138] (WW) intel(0): first get vblank counter failed: Invalid argument Somehow this reminds me of an old bug where the vblank counter got confused because of "DPMS off". I hope this Information is somehow helpful. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/868684 Title: Xorg freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/868684/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
