Lenovo Zhaoyang E47 with the SandyBridge-base i3-2310M CPU has the same issue too.
I confirmed that the 2.6.38-11 -proposed kernel fixes the bug on this hardware. ** Tags removed: verification-needed-natty ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/791752 Title: Can not toggle Display to External only mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-desktop3/+bug/791752/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
