I think I've tracked it down a little further. It seems that only X freezes not the system as a whole. I was able to trigger this bug from a remote computer via ssh and gather the logs afterwards. Here's what I did:
$ ssh [email protected] $ export DISPLAY=:0.0 $ export XAUTHORITY=/var/run/gdm/auth-for-login-*/database $ xrandr -q Screen 0: minimum 320 x 200, current 1366 x 768, maximum 4096 x 4096 VGA1 disconnected (normal left inverted right x axis y axis) LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1366x768 59.9*+ 1360x768 59.8 1024x768 85.0 75.0 70.1 60.0 832x624 74.6 800x600 85.1 72.2 75.0 60.3 56.2 640x480 85.0 72.8 75.0 59.9 720x400 85.0 640x400 85.1 640x350 85.1 now I plugged in the other display $ xrandr -q Screen 0: minimum 320 x 200, current 1366 x 768, maximum 4096 x 4096 VGA1 connected 1280x1024+1366+0 (normal left inverted right x axis y axis) 338mm x 270mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 60.0 720x400 70.1 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1366x768 59.9*+ 1360x768 59.8 1024x768 85.0 75.0 70.1 60.0 832x624 74.6 800x600 85.1 72.2 75.0 60.3 56.2 640x480 85.0 72.8 75.0 59.9 720x400 85.0 640x400 85.1 640x350 85.1 At the moment I issued this command the screens went blank (except the pointer) as before with gnome-display-settings. Successive calls to xrandr -q simply block until I hit ctrl+c. I attached the output of dmesg and Xorg.0.log. In dmesg 2495 is the time of the first "xrandr -q" 3974 the second one. I hope this get's us a bit ** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/35319441/Xorg.0.log -- Ubuntu freezes when opening gnome-display-properties with multiple displays https://bugs.launchpad.net/bugs/466539 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
