On 2023-01-04 7:30 p.m., Frank wrote:
Just went back to my Debian Sid installation this evening to discover
it won't boot.
There were 88 updates this morning so I suspect my problem is
related to that.
Has anyone else run into this? How would I go about diagnosing
what's wrong? I tried booting in emergency mode but don't know
what to look for.
Adding more info.
All i get is a flashing cursor on a black screen.
Digging around in the emergency shell I found two logs related to
lightdm. It seems it is having problems running the greeter.
This is part of the lightdm log
[+0.33s] DEBUG: Seat seat0: Display server ready, starting session
authentication
[+0.33s] DEBUG: Session pid=734: Started with service 'lightdm-greeter',
username 'lightdm'
[+0.35s] DEBUG: Session pid=734: Authentication complete with return
value 0: Success
[+0.35s] DEBUG: Seat seat0: Session authenticated, running command
[+0.35s] DEBUG: Session pid=734: Running command
/usr/sbin/lightdm-gtk-greeter
[+0.35s] DEBUG: Creating shared data directory /var/lib/lightdm/data/lightdm
[+0.35s] DEBUG: Session pid=734: Logging to
/var/log/lightdm/seat0-greeter.log
[+0.37s] DEBUG: Activating VT 7
[+0.37s] DEBUG: Activating login1 session c5
[+0.37s] DEBUG: Seat seat0 changes active session to c5
[+0.37s] DEBUG: Session c5 is already active
[+0.37s] DEBUG: Greeter closed communication channel
[+0.37s] DEBUG: Session pid=734: Exited with return value 1
[+0.37s] DEBUG: Seat seat0: Session stopped
[+0.37s] DEBUG: Seat seat0: Stopping; failed to start a greeter
[+0.37s] DEBUG: Seat seat0: Stopping
[+0.37s] DEBUG: Seat seat0: Stopping display server
[+0.37s] DEBUG: Sending signal 15 to process 720
[+0.38s] DEBUG: Seat seat0 changes active session to
[+0.52s] DEBUG: Process 720 exited with return value 0
[+0.52s] DEBUG: XServer 0: X server stopped
This is the greeter log
** (process:734): WARNING **: 22:32:38.355: Error reading existing
Xauthority: Failed to open file ?/var/lib/lightdm/.Xauthority?:
Permission denied
Error writing X authority: Failed to open X authority
/var/lib/lightdm/.Xauthority: Permission denied
