On 16/11/2025 02:24, Peter Milesson wrote:
There is just one single uninformative log message in the journal,
which makes it impossible for me to track down what's going on.
It still may be informative for others or specific enough for search
engines.
They are up to date, as everything applicable is installed from
Trixie backports.
"Everything" from backports sounds suspicious. What about just kernel
installed from backports and other packages from stable+security+updates?
- The terminals are configured with a graphical GUI using LightDM as
display manager, and LXDE as window manager.
[...]
- User profiles are mounted to /home/<user> on the terminals with
libpam-mount through CIFS.
pam_mount(8) has a troubleshooting section. PAM may be rather
sensitive to order of modules loaded during lightdm session.
I faced issues with locking home directories encrypted using fscrypt
since systemd user session may finish after systemd PAM session. My
impression is that systemd developers aware with this use case, but
instead of PAM modules recommend to run some daemon. There is
systemd-homed for this purpose (I have not tried it).