Public bug reported: On both Impish and Jammy, gdm3 does not offer greeter to XDMCP sessions. Instead, it shows the "Oh no! Something has gone wrong" image on the root window. This indicates that the XDMCP part is working, but the session is not.
Expected: remote sessions should work out of the box. $ lsb_release -rd Description: Ubuntu Jammy Jellyfish (development branch) Release: 22.04 $ apt policy gdm3 gdm3: Installed: 41.0-3ubuntu2 Candidate: 41.0-3ubuntu2 Version table: *** 41.0-3ubuntu2 500 500 http://mirrors.sonic.net/ubuntu jammy/main amd64 Packages 100 /var/lib/dpkg/status $ apt policy gnome-session-bin gnome-session-bin: Installed: 40.1.1-3ubuntu1 Candidate: 40.1.1-3ubuntu1 Version table: *** 40.1.1-3ubuntu1 500 500 http://mirrors.sonic.net/ubuntu jammy/main amd64 Packages 100 /var/lib/dpkg/status $ diff -u gdm3/etc/gdm3/custom.conf /etc/gdm3/custom.conf --- gdm3/etc/gdm3/custom.conf 2021-12-08 08:06:05.000000000 -0800 +++ /etc/gdm3/custom.conf 2022-01-01 09:54:55.293144516 -0800 @@ -18,6 +18,9 @@ [security] [xdmcp] +Enable=true +HonorIndirect=true +ShowLocalGreeter=false [chooser] @@ -25,5 +28,5 @@ # Uncomment the line below to turn on debugging # More verbose logs # Additionally lets the X server dump core if it crashes -#Enable=true +Enable=true ** Affects: gdm3 (Ubuntu) Importance: Undecided Status: New ** Attachment added: "syslog from remote session attempt" https://bugs.launchpad.net/bugs/1956159/+attachment/5550576/+files/xdmcp-session-syslog.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956159 Title: XDMCP sessions show "Oh no!" screen instead of greeter To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1956159/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs