Thought I would try radeon.modeset=0 as suggested earlier, but found that menu.lst has disappeared with grub2. The documentation for grub2 is poor to say the least. So I gave up, went back to 9.10, which worked fine.
-- [X700] KMS, amd64: Kernel panic while trying to launch system > preferences > appearance https://bugs.launchpad.net/bugs/544741 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