This bug was fixed in the package gdm3 - 42.0-1ubuntu7.22.04.2
---------------
gdm3 (42.0-1ubuntu7.22.04.2) jammy; urgency=medium
[ Daniel van Vugt ]
* Add local-display-factory-Fix-typo-in-supported-session-types.patch:
To fix unreliable session type selection (LP: #2006059)
-- Sebastien Bacher <[email protected]> Thu, 20 Apr 2023 15:27:53
+0200
** Changed in: gdm3 (Ubuntu Jammy)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2006059
Title:
systemd refuses to start secondary Xorg logins
[[email protected]: Skipped due to 'exec-condition'.]
Status in gdm:
Fix Released
Status in gdm3 package in Ubuntu:
Fix Released
Status in gdm3 source package in Jammy:
Fix Released
Status in gdm3 source package in Kinetic:
Fix Released
Status in gdm3 source package in Lunar:
Fix Released
Bug description:
[ Impact ]
Switching to a second user falls back to Wayland even when Xorg was
explicitly selected.
[ Test Plan ]
On an NVIDIA DGX Station (known to reliably reproduce the issue):
1. Start with a default Ubuntu 22.04 Desktop install
2. apt install linux-modules-nvidia-525-server-generic
nvidia-driver-525-server -y
3. reboot (so new modules load)
4. Login to a desktop session
5. Create a new user using 'adduser'
6. Attempt to "switch to" the new user from the existing login
[ Where problems could occur ]
Any part of the login procedure as that is what is being modified.
[ Original Description ]
I have three accounts and I need all three to run on xorg instead of
wayland.
For some reason, when switching accounts, two of them consistently
start wayland even when I select plain gnome from the gdm menu. To get
xorg, I need to log out and log in a second time.
A solution that is supposed to work consists in customizing
/etc/gdm3/custom.conf (see https://docs.fedoraproject.org/en-
US/quick-docs/configuring-xorg-as-default-gnome-session/). This
solution does not work.
I have also experimented with the following options:
DefaultSession=gnome-xorg.desktop
and
PreferredDisplayServer=xorg
Neither appears to set xorg as the default...
I have found the following bug reported upstream against gdm:
https://gitlab.gnome.org/GNOME/gdm/-/issues/733.
It looks like this was fixed a year ago but my system is still affected.
Note that I am using the gnome-session package. I doubt whether it
makes any difference but I am adding it for the sake of completeness.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gdm3 42.0-1ubuntu7
ProcVersionSignature: Ubuntu 6.0.0-1010.10-oem 6.0.9
Uname: Linux 6.0.0-1010-oem x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: GNOME
Date: Sun Feb 5 19:44:53 2023
InstallationDate: Installed on 2022-03-27 (315 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220326)
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.gdm3.custom.conf: 2023-01-30T07:57:48.574915
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