Re: trixie: can't log in from lightdm.

[Max Nikulin <manikulin@gmail.com>]

On 17/09/2025 08:38, David wrote:
> Line 392 of your paste maybe related to this, not sure if important:
>    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1087449

For lightdm it should be rather
<https://bugs.debian.org/1087713>
"lightdm reports warnings on utmpx missing"

It seems, it is really just a warning:
<https://sources.debian.org/src/lightdm/1.32.0-6/src/session-child.c?hl=716#L716>

Since no apparent errors are logged to journald, I would try to login as 
charles from LightDM, then login as root from a VT and inspect 
~charles/.xsession-errors and /var/log/Xorg.0.old (/var/log/Xorg.0 
likely will be for the greater session started after end of charles' 
session).

Is there anything suspicious on /var/log/lightdm?

You may try to create a new user and try to login to test whether it may 
be related to user configuration.