I get this as well. When I sudo upgrade-manager -d, I get the following in the summary:
.... REMOVE nvidia-glx-185 ..... -- when doing X updates it wants to remove nvidia-glx-185 https://bugs.launchpad.net/bugs/495779 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-180 in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp