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Running PulseAudio as System-Wide Daemon – PulseAudio
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/SystemWide/#:~:text=To%20run%20PulseAudio%20in%20system-wide%20mode%2C%20it%20should,ready-made%20systemd%20service%20file%20with%20PulseAudio.%20Patches%20welcome%21%29
sound - systemd disable pulseaudio system mode - Ask …
https://askubuntu.com/questions/1071532/systemd-disable-pulseaudio-system-mode
Try first to stop and disable pulseaudio. systemctl --user stop pulseaudio.socket systemctl --user stop pulseaudio.service or . sudo systemctl stop pulseaudio sudo systemctl disable pulseaudio and eventually . sudo systemctl mask pulseaudio to prevent that other services start pulseaudio again. Take a look at . man pulse-daemon.conf
Ubuntu Manpage: pulseaudio - The PulseAudio Sound System
https://manpages.ubuntu.com/manpages/focal/man1/pulseaudio.1.html
when pulseaudio runs in the system mode, automatic exit is always disabled, so this option does nothing. --scache-idle-time =secs unload autoloaded samples from the cache when they haven't been used for the specified number of seconds. --log-level [=level] if an argument is passed, set the log level to the specified value, otherwise increase …
Ubuntu Manpage: pulseaudio - The PulseAudio Sound System
https://manpages.ubuntu.com/manpages/jammy/man1/pulseaudio.1.html
When PulseAudio runs in the system mode, automatic exit is always disabled, so this option does nothing. --scache-idle-time =SECS Unload autoloaded samples from the cache when they haven't been used for the specified number of seconds.
Running PulseAudio as System-Wide Daemon – PulseAudio
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/SystemWide/
When using the system mode, the PulseAudio user services need to be disabled in systemd: sudo systemctl --global disable pulseaudio.service pulseaudio.socket It's also advisable to set autospawn = no in /etc/pulse/client.conf. It's not strictly necessary, because even if autospawning is enabled, it won't happen when PulseAudio is running in the system mode.
Ubuntu Manpage: pulseaudio - The PulseAudio Sound System
https://manpages.ubuntu.com/manpages/bionic/man1/pulseaudio.1.html
User pulse, group pulse: if PulseAudio is running as a system daemon (see --system above) and is started as root the daemon will drop privileges and become a normal user process using this user and group. If PulseAudio is running as a user daemon this user and group has no meaning. REAL-TIME AND HIGH-PRIORITY SCHEDULING
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