Package: systemd Version: 251.3-1 Severity: normal File: /usr/share/doc/systemd/README.Debian.gz
The README.Debian file duefully documents the surprising[1] effects that
happen when using tmux or similar under in a logind session. However, it
only covers the KillUserProcesses part of things (a mechanism that
Debian thankfully disables by default), and not the linger part, which
has a similar (if not the same) effect and is set to kill by default.
Suggested new text, based on the current one:
> KillUserProcesses and linger behavior in Debian
> ===============================================
>
> If KillUserProcesses=yes is configured in logind.conf(5), the session scope
> will be terminated when the user logs out of that session.
>
> Likewise, processes launched by users configured as Linger=no (see
> loginctl(1)) are terminated.
>
> See logind.conf(5):
>
> | Note that setting KillUserProcesses=yes will break tools like screen(1) and
> | tmux(1), unless they are moved out of the session scope.
>
> The default for KillUserProcesses in /etc/systemd/logind.conf is set
> to "yes" in upstream systemd, though Debian defaults to "no" (see #825394).
>
> The default Linger value for users is set to "no", and may need to be
> altered with `loginctl enable-linger ${USER}` to keep screen and tmux
> useful.
[1]: https://bugs.debian.org/1016475
-- Package-specific info:
-- System Information:
Debian Release: bookworm/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.18.0-3-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages systemd depends on:
ii adduser 3.123
ii libacl1 2.3.1-1
ii libaudit1 1:3.0.7-1+b1
ii libblkid1 2.38-6
ii libc6 2.33-8
ii libcap2 1:2.44-1
ii libcryptsetup12 2:2.5.0-1
ii libfdisk1 2.38-6
ii libgcrypt20 1.10.1-2
ii libkmod2 30+20220630-3
ii liblz4-1 1.9.3-2
ii liblzma5 5.2.5-2.1
ii libmount1 2.38-6
ii libseccomp2 2.5.4-1+b1
ii libselinux1 3.4-1+b1
ii libssl3 3.0.5-1
ii libsystemd-shared 251.3-1
ii libsystemd0 251.3-1
ii libzstd1 1.5.2+dfsg-1
ii mount 2.38-6
Versions of packages systemd recommends:
ii dbus [default-dbus-system-bus] 1.14.0-2
ii ntpsec [time-daemon] 1.2.1+dfsg1-7+b1
Versions of packages systemd suggests:
ii libfido2-1 1.11.0-1+b1
ii libtss2-esys-3.0.2-0 3.2.0-1+b1
ii libtss2-mu0 3.2.0-1+b1
ii libtss2-rc0 3.2.0-1+b1
ii policykit-1 0.105-33
pn systemd-boot <none>
ii systemd-container 251.3-1
pn systemd-homed <none>
pn systemd-userdbd <none>
Versions of packages systemd is related to:
ii dbus-user-session 1.14.0-2
pn dracut <none>
ii initramfs-tools 0.142
pn libnss-systemd <none>
ii libpam-systemd 251.3-1
ii udev 251.3-1
-- no debconf information
--
To use raw power is to make yourself infinitely vulnerable to greater powers.
-- Bene Gesserit axiom
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