Public bug reported:
Immediately after I login on Ubuntu 18.10 into gnome-shell, gdm
disappears even though gnome-shell is fine: if I try switching to tty1
with CTRL-ALT F1, I just see a list of bootup messages (like 'Starting
Fingerpint Authentication Daemon').
loginctl shows only one session:
$ loginctl
SESSION UID USER SEAT TTY
2 1001 rocko seat0 tty2
1 sessions listed.
There's no crash file in /var/crash, and no useful information in gdm3's
status:
$ systemctl status gdm3
● gdm.service - GNOME Display Manager
Loaded: loaded (/lib/systemd/system/gdm.service; static; vendor preset:
enabled)
Drop-In: /lib/systemd/system/display-manager.service.d
└─xdiagnose.conf
Active: active (running) since Thu 2018-09-27 09:33:45 AWST; 4min 46s ago
Process: 1356 ExecStartPre=/usr/share/gdm/generate-config (code=exited,
status=0/SUCCESS)
Main PID: 1364 (gdm3)
Tasks: 3 (limit: 4915)
Memory: 9.0M
CGroup: /system.slice/gdm.service
└─1364 /usr/sbin/gdm3
Warning: Journal has been rotated since unit was started. Log output is
incomplete or unavailable.
If I try switching to another user via the gnome-shell menu, gdm3 gets
restarted and I get the login screen again on tty1. However, if gnome-shell
crashes (eg when it freezes), I can't easily restart gdm3, so it's a nuisance.
Previously, the gdm3 login screen was always available on tty1 so it was
easy to switch to backup user if the first user's session crashed.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: gdm3 3.30.0-0ubuntu2
Uname: Linux 4.19.0-041900rc5-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Sep 27 09:34:22 2018
InstallationDate: Installed on 2017-08-16 (406 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: gdm3
UpgradeStatus: Upgraded to cosmic on 2018-08-15 (42 days ago)
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cosmic
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https://bugs.launchpad.net/bugs/1794638
Title:
gdm crashes immediately after login
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