I too experience this problem - on a Sony Vaio VPCW11S1E and a fresh installation of karmic.
The system freezes completely when I do one of the following things: 1. boot+login, plug-in the monitor, open the display settings 2. plug-in the monitor, boot+login (monitors are mirrored), start display settings and try to deactivate mirroring I'd guess that this is graphics driver related, I have a i915 chip. Making a backtrace does not seem possible since the system as a whole is freezing. Please tell me if I can provide you with any additional information. -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs