solved ... there was a xorg.conf file with wrong virtual dimensions (automaticly created during tests for dual screen support). After removing the xorg-file the problem is gone away
** Attachment added: "xorg.conf" https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/656829/+attachment/1681417/+files/xorg.conf -- system hangs when switching from vt to graphical vt7 https://bugs.launchpad.net/bugs/656829 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-settings-daemon in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
