The problem with the workaround/fix is that that fix can and will get overwritten by newer versions of GDM3. That just happened to me and I had a hard time figuring out how to fix it until I came across this again...
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1760849 Title: Login screen appears on only one monitor and it's not the one I want Status in GNOME Shell: Unknown Status in gnome-control-center package in Ubuntu: Opinion Status in gnome-shell package in Ubuntu: Triaged Bug description: Upstream bugs: https://gitlab.gnome.org/GNOME/gdm/issues/168 https://gitlab.gnome.org/GNOME/gdm/issues/183 https://gitlab.gnome.org/GNOME/gdm/issues/195 https://gitlab.gnome.org/GNOME/gdm/issues/319 https://gitlab.gnome.org/GNOME/gdm/issues/372 https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/3867 The Ubuntu login screen is tiled on all displays, not mirrored, making it nearly impossible to login when using an external monitor if the laptop screen is not visible. There appears to be no available control to alter the display settings of the login screen. Prior to bionic, the controls followed the mouse onto different displays so you could login by giving the mouse a swipe to the right to get the controls to appear. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gdm3 3.28.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.9-0ubuntu2 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Apr 3 22:13:53 2018 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: gdm3 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1760849/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
