My use case is as follows: I am trying to set up a Raspberry Pi as a sound server for my Linux PC. My Linux PC will use PulseAudio's networking capability to send the audio to the Raspberry Pi, which is connected to a stereo system.
All the examples I've found online for doing this seem to suggest running the PulseAudio instance on the RPi in system mode. But with all the warnings about system mode, I thought I'd try to achieve this running Pulse in user mode. Furthermore, I want to have Pulse start automatically at boot time on the RPI, and run with real time priority. I want PulseAudio to run as user "pulse". I have this in /etc/security/limits.conf: pulse - rtprio 90 pulse - nice -19 And this in /etc/pulse/daemon.conf realtime-scheduling = yes realtime-priority = 5 And it seems to work as expected when launched from the CLI: # runuser -u pulse -- /usr/bin/pulseaudio --daemonize=no --disallow-module-loading --disallow-exit=yes --disable-shm=no --verbose Pulse prints this when starting: I: [pulseaudio] core-util.c: Successfully gained nice level -11 And looking at the process via "top" or "ps" shows that it is indeed running as the user "pulse". I have this in my systemd service file: [Service] User=pulse Group=pulse Type=simple BusName=org.pulseaudio.Server ExecStartPre=/bin/mkdir -p /var/run/pulse ExecStartPre=/bin/chown -R pulse:pulse /var/run/pulse ExecStart=/usr/bin/pulseaudio --daemonize=no --disallow-module-loading --disallow-exit=yes --disable-shm=no --verbose Restart=always And when I to "systemctl start pulseaudio", it starts, but not with realtime priority, and I have this in journalctl: Oct 30 17:09:00 dietpi-music pulseaudio[1104]: I: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted Oct 30 17:09:00 dietpi-music pulseaudio[1104]: I: [pulseaudio] main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted What am I missing? Thanks, Matt _______________________________________________ pulseaudio-discuss mailing list pulseaudio-discuss@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss
