According to https://bugzilla.redhat.com/show_bug.cgi?id=1274451 there are no plans for Wayland to support running graphical applications as root so that bug has been closed as WONTFIX. The correct fix is for Synaptic, and other graphical apps needing root, to be rewritten to run the GUI as a normal user and to use "polkit" for the parts where they need root access.
** Bug watch added: Red Hat Bugzilla #1274451 https://bugzilla.redhat.com/show_bug.cgi?id=1274451 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1712089 Title: Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: Connection refused To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1712089/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs