You had some unofficial nvidia package installed (?) which didn't clean up after itself, leaving the libglx.so diversion in place. Closing the bug.
** Changed in: xorg-server (Ubuntu) Status: Confirmed => Invalid -- xserver-xorg-core couldn't be updated https://bugs.launchpad.net/bugs/355059 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