FIghting this problem too, was trying to build a vm from the current ISO. The previous poster's solution doesn't seem to apply cleanly for me - have quite a few more complaints, and then if proceed anyway, end up with a kernel/initrd combo that doesn't boot. Trying to build guest additions from the vbox sources (their iso) fails, as it quits claiming an unrecognized x11 version.
I am happy to report that the packages from the location listed above (https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/virtualbox- ppa/+packages) do let things work for me. -- 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 with mesa-lts-utopic 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