Same issue with a Radeon Xpress 200M. Attached is my Xorg.0.log from an attempted switch.
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/37372767/Xorg.0.log -- [RS482] Changing screen resolution garbles display https://bugs.launchpad.net/bugs/138087 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