Jérôme, Xinerama is switched on with Xorg.conf. Have you tried deleting it and creating a fresh one, just in case something is switching it on?
** Summary changed: - Launching QT apps such as SpeedCrunch, keepassX, Lucky Backup, Pencil, Stellarium, skype, VLC crashes Xserver + Launching QT apps such as SpeedCrunch, keepassX, Lucky Backup, Pencil, Stellarium, skype, Google Earth, VLC crashes Xserver -- Launching QT apps such as SpeedCrunch, keepassX, Lucky Backup, Pencil, Stellarium, skype, Google Earth, VLC crashes Xserver https://bugs.launchpad.net/bugs/650539 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to qt4-x11 in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs