>From Upstream: https://bugzilla.gnome.org/show_bug.cgi?id=700594#c4
Owen Taylor [mutter developer] 2013-05-20 16:23:46 UTC If everything works as expected after disabling and reenabling the display in System Settings, then this is a bug in the X server, in gnome-settings-daemon, or (less likely) in the Mesa GL drivers. (In the case where the display isn't working, do 'xdpyinfo| grep dimensions' - if the monitor's pixels show up there, then it might be a Mesa bug, but if they don't show up, then that excludes Mesa and it's either an X or g-s-d bug) >From Upstream: https://bugzilla.gnome.org/show_bug.cgi?id=700594#c5 Richard Eames [reporter] 2013-05-20 16:55:09 UTC I sometimes have to disable/reenable the monitor multiple times before I can get it to work. There are three cases that I get when I enable/reenable the monitor: 1 : Works as expected, I get a screen that spans all three monitors 2 : The screen is shifted by about half the width of the third monitor 3 : Similar to 3, except that the middle monitor displays corrupt graphics. This is what I get on case 1, and before I've done the disable/reenable. $ xdpyinfo |grep dimen dimensions: 5520x1080 pixels (1461x286 millimeters) I also tested in Ubuntu Unity with the same results, so that rules out gnome-shell. What's my next step for ruling out Mesa / X / g-s-d? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1178000 Title: Monitor on second video card doesn't display anything after login To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1178000/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
