What's the output of $ apt-cache policy xserver-xorg-video-5 It seems to cause the problem.
-- Could not calculate the upgrade https://bugs.launchpad.net/bugs/572555 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
