spontaneously logged out of lightdm session, authentication failed until logind restarted
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
systemd (Ubuntu) |
Expired
|
High
|
Unassigned |
Bug Description
Out of nowhere, I was suddenly logged out of my X session today and dropped to a lightdm greeter screen. attempts to log back in were kicked immediately back to the greeter. A look at the lightdm log showed:
[+7.44s] DEBUG: Seat: Display server ready, starting session authentication
[+7.44s] DEBUG: Session pid=22931: Started with service 'lightdm-greeter', username 'lightdm'
[+7.55s] DEBUG: Session pid=22931: Authentication complete with return value 0: Success
[+7.55s] DEBUG: Seat: Session authenticated, running command
[+7.55s] DEBUG: Session pid=22931: Running command /usr/lib/
[+7.55s] DEBUG: Session pid=22931: Logging to /var/log/
[+7.60s] DEBUG: Activating VT 7
[+7.77s] DEBUG: Session pid=22931: Greeter connected version=1.9.8
[+7.96s] DEBUG: Session pid=22931: Greeter start authentication for vorlon
[+7.96s] DEBUG: Session pid=23002: Started with service 'lightdm', username 'vorlon'
[+7.96s] DEBUG: Session pid=22931: Greeter start authentication for vorlon
[+7.96s] DEBUG: Session pid=23002: Sending SIGTERM
[+7.97s] DEBUG: Session pid=23004: Started with service 'lightdm', username 'vorlon'
[+7.97s] DEBUG: Session pid=23002: Terminated with signal 15
[+7.97s] DEBUG: Session: Failed during authentication
[+7.97s] DEBUG: Seat: Session stopped
(you'll note from the timestamps that I had also tried restarting lightdm, which didn't fix the problem.)
Only after I manually killed logind and restarted lightdm again was I able to log in.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: systemd-services 204-5ubuntu13
ProcVersionSign
Uname: Linux 3.13.0-12-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Mar 12 08:39:20 2014
InstallationDate: Installed on 2010-09-24 (1265 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: systemd
UpgradeStatus: Upgraded to trusty on 2013-10-23 (140 days ago)
Changed in systemd (Ubuntu): | |
status: | New → Confirmed |
Changed in systemd (Ubuntu): | |
importance: | Undecided → High |
I had a similar problem:
- i was in my regular user and did a suspend in the laptop
- someone turn on my laptop, and the system went to lightdm, then the person choose Guest Account
- some time after, the Guest was suddenly logged out
Then after, i tried to login to Guest, and shortly after it logged out. I logged in to my user, and changed the tty, and i realized that there was 3 locked tty.