Systemd-activated PA has no access to the DBus session bus or an equivalent user bus, as DBus does not ship any integration into the systemd user instance. This causes errors when starting: [pulseaudio] module-jackdbus-detect.c: Unable to contact D-Bus session bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 [pulseaudio] module.c: Failed to load module "module-jackdbus-detect" (argument: "channels=2"): initialization failed. [pulseaudio] main.c: Module load failed. [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NotSupported: Unable to autolaunch a dbus-daemon without a $DISPLAY for X11 At least the jackdbus integration is missing. pulseaudio 5.99.1-4-g7856 dbus 1.8.10
This has been solved in DBus and systemd.
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