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Pulseaudio for multi-user Linux · Dhole's blog
https://dhole.github.io/post/pulseaudio_multiple_users/
pulseaudio server runs as my main user (I could actually create a new user just to run the pulseaudio server) Every user that belongs to the audio group is able to access the pulseaudio server (and thus play sound). For this, I just need to add the required users to the audio group: usermod -aG audio user
Running PulseAudio as System-Wide Daemon – PulseAudio
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/SystemWide/
When PulseAudio starts in the system mode, it will change its user and group from root to pulse in order to not have too many privileges. The pulse user needs to be in the audio and bluetooth groups in order to be able to use ALSA and bluetooth devices. All users that need access to PulseAudio have to be in the pulse-access group, even root.
PulseAudio - LinuxReviews
https://linuxreviews.org/PulseAudio
PulseAudio is a standard audio stack used by as good as all Linux distributions. It places itself between end-user software and the kernels ALSA audio stack. It can be used for mixing, per-application volume control and network audio. It has a history of criticism for it's high CPU use and many, many bugs.
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