Package: systemd Version: 215-17+deb8u2 Severity: normal Hi,
I keep seeing in various places (Debian-related and otherwise) that su does not start a new systemd user session because it is not a proper login. The symptom is: # su -l boris $ systemctl --user status Failed to get D-Bus connection: Connection refused To me, it seems su -/-l/--login is just like login (what is the conceptual difference between su -l boris and ssh boris@127.0.0.1?). It also does not attach to a (lingering) user session, unless I manually do: export XDG_RUNTIME_DIR=/run/user/`id -u` [Note that in this case XDG_SESSION_ID will still be bogus but apparently it is harmless since it is for information purposes only.] It seems the decision whether it is a proper login or not is made somewhere in /etc/pam.d/. While looking through the files I noticed that the runuser-l file in this directory (but not runuser) contains this line: -session optional pam_systemd.so While this may seem like it should be the solution, runuser -l still doesn't start/attach to the user session. So the purpose of this extra line is still a mystery to me. For completeness, let me mention /usr/share/pam-configs/systemd which seems related but I am not sure how. -- Package-specific info: -- System Information: Debian Release: 8.2 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages systemd depends on: ii acl 2.2.52-2 ii adduser 3.113+nmu3 ii initscripts 2.88dsf-59 ii libacl1 2.2.52-2 ii libaudit1 1:2.4-1+b1 ii libblkid1 2.25.2-6 ii libc6 2.19-18+deb8u1 ii libcap2 1:2.24-8 ii libcap2-bin 1:2.24-8 ii libcryptsetup4 2:1.6.6-5 ii libgcrypt20 1.6.3-2 ii libkmod2 18-3 ii liblzma5 5.1.1alpha+20120614-2+b3 ii libpam0g 1.1.8-3.1 ii libselinux1 2.3-2 ii libsystemd0 215-17+deb8u2 ii mount 2.25.2-6 ii sysv-rc 2.88dsf-59 ii udev 215-17+deb8u2 ii util-linux 2.25.2-6 Versions of packages systemd recommends: ii dbus 1.8.20-0+deb8u1 ii libpam-systemd 215-17+deb8u2 Versions of packages systemd suggests: pn systemd-ui <none> -- no debconf information
