Проблема: не стартует при запуске системы user@1000.service. Запуск руками срабатывает, но это крайне неудобно. Сам юнит не изменял, override'ов тоже нет.
Система Debian 9.
$ systemctl --failed
UNIT LOAD ACTIVE SUB DESCRIPTION
● user@1000.service loaded failed failed User Manager for UID 1000
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
1 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
$ systemctl status user@1000.service
● user@1000.service - User Manager for UID 1000
Loaded: loaded (/lib/systemd/system/user@.service; static; vendor preset: enabled)
Active: failed (Result: timeout) since Wed 2017-08-23 15:22:41 MSK; 1 day 21h ago
Process: 1714 ExecStart=/lib/systemd/systemd --user (code=exited, status=0/SUCCESS)
Main PID: 1714 (code=exited, status=0/SUCCESS)
Tasks: 0
CGroup: /user.slice/user-1000.slice/user@1000.service
$ systemctl start user@1000.service
$ systemctl status user@1000.service
● user@1000.service - User Manager for UID 1000
Loaded: loaded (/lib/systemd/system/user@.service; static; vendor preset: enabled)
Active: active (running) since Fri 2017-08-25 13:19:19 MSK; 2s ago
Main PID: 10223 (systemd)
Status: "Startup finished in 7.994s."
Tasks: 5
CGroup: /user.slice/user-1000.slice/user@1000.service
├─emacs.service
│ ├─10264 /usr/bin/emacs --daemon
│ └─10265 /usr/bin/emacs --daemon
└─init.scope
├─10223 /lib/systemd/systemd --user
└─10224 (sd-pam)
$ cat /lib/systemd/system/user@.service
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
[Unit]
Description=User Manager for UID %i
After=systemd-user-sessions.service
[Service]
User=%i
PAMName=systemd-user
Type=notify
ExecStart=-/lib/systemd/systemd --user
Slice=user-%i.slice
KillMode=mixed
Delegate=yes
TasksMax=infinity
TimeoutStopSec=120s