The option with the Option "Shadow" "true" in the xorg.conf works for me on Kubuntu 10.10 as well as in 11.04 beta 1.
The attached xorg.conf has a lot of data which is not really needed. If you want to use another screen configuration, remove everything form the file except the code below: Section "Device" Identifier "Sandybridge" Driver "intel" Option "DRI" "false" Option "Shadow" "true" EndSection -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/732304 Title: Intel sandy-bridge dual-head GPU hang -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs