I also tried the packages from proposed on top of 18.04.0 on which I could reproduce the original issue and the packages from proposed fixed it. double verification done.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1792932 Title: Desktop fails to boot in vbox: Xorg assert failure: Xorg: ../../../../dix/privates.c:384: dixRegisterPrivateKey: Assertion `!global_keys[type].created' failed. To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1792932/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp