I've been trying to reproduce it but fortunately i couldn't do it. I'll attach all the xorg.logs i have, in case any of them has useful information for you.
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/34181713/Xorg.0.log -- gnome-system-monitor assert failure: gnome-system-monitor: ../../src/xcb_io.c:378: _XAllocID: Afirmación `ret != inval_id' fallida. https://bugs.launchpad.net/bugs/454295 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libx11 in ubuntu. _______________________________________________ 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

