Still not fixed after updating fresh 14.04 guest VM today. If anyone interested (as I didn't see it noted above) the word-around is to remove libcheese-gtk23 then reinstall xserver-xorg-core.. ( per: http://askubuntu.com/a/527077/169878 ) :
sudo apt-get remove libcheese-gtk23 sudo apt-get install xserver-xorg-core sudo apt-get install virtualbox-dkms virtualbox-guest-utils \ virtualbox-guest-x11 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1424769 Title: virtualbox-guest-x11 uninstallable in Trusty with LTS Enablement Stacks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1424769/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs