maybe this is help to solve it https://bbs.archlinux.org/viewtopic.php?id=200823
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1566542 Title: [upstream] Two sddm bugs with 16.04 – MIT-Magic cookie unpredictable for VNC / option "hideshell" buggy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/1566542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs