Package: sddm Version: 0.13.0-1 Severity: normal /etc/pam.d/{sddm,sddm-autologin,sddm-greeter} all have "session required pam_systemd.so" and they all also include common-session which has "session optional pam_systemd.so".
This leads to errors such as the following: Jan 3 12:23:28 unicorn sddm-helper: pam_systemd(sddm-greeter:session): Cannot create session: Already running in a session Jan 3 12:23:28 unicorn sddm-helper: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0) Jan 3 12:23:28 unicorn sddm-helper: pam_systemd(sddm-greeter:session): Cannot create session: Already running in a session Also why do you need to fail a login if a systemd session can't be established? The maintainers of the common-session decided to make it optional, why does it need to be required for sddm and if so wouldn't it need to be required for other login daemons too? -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages sddm depends on: ii adduser 3.115 ii debconf [debconf-2.0] 1.5.59 ii libc6 2.24-8 ii libgcc1 1:6.3.0-2 ii libpam0g 1.1.8-3.4 ii libqt5core5a 5.7.1+dfsg-2 ii libqt5dbus5 5.7.1+dfsg-2 ii libqt5gui5 5.7.1+dfsg-2 ii libqt5network5 5.7.1+dfsg-2 ii libqt5qml5 5.7.1-1 ii libqt5quick5 5.7.1-1 ii libstdc++6 6.3.0-2 ii libsystemd0 232-8 ii libxcb-xkb1 1.12-1 ii libxcb1 1.12-1 ii qml-module-qtquick2 5.7.1-1 ii sddm-theme-breeze [sddm-theme] 4:5.8.4-1 Versions of packages sddm recommends: ii libpam-systemd 232-8 Versions of packages sddm suggests: pn libpam-kwallet5 <none> -- debconf information: sddm/daemon_name: /usr/bin/sddm * shared/default-x-display-manager: sddm