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PulseAudio - Fedora 19
https://linux1.ca/docs/doc-pulseaudio-fc19.html
PulseAudio is a sound system layer which sits between your sound applications, like mplayer or Rhythmbox, and ALSA (Advanced Linux Sound Architecture). ALSA is the underlaying sound architechure that handles sending data to the physical sound card. Without PulseAudio, your applications send to ALSA which sends out your sound card.
Running PulseAudio as system service – /dev/blog
https://possiblelossofprecision.net/?p=1956
In Fedora, sound devices ( /dev/snd/*) are usually owned by root:audio and since the pulse user who will run PulseAudio daemon later is not part of the audio group per default, it cannot access sound devices. Adding the pulse user to the audio group is simple though ? 01 02 03 04 05 06 07 08 09 10 11 12 # ls -lah /dev/snd/ total 0
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.
Noob’s Guide to Linux Audio: ALSA, OSS, and Pulse Audio ...
https://linuxhint.com/guide_linux_audio/
Untangling the web of legacy technologies and layers of abstraction can be a real challenge even for seasoned Linux users who know the ins and outs of the operating system by heart. Hopefully, our article helped you better understand the most important components of the Linux audio system, including ALSA, OSS, and PulseAudio.
How to Restart Sound Server In Fedora - Ask Fedora
https://ask.fedoraproject.org/t/how-to-restart-sound-server-in-fedora/2887
PulseAudio is indeed the default/system sound service when running in a standard GNOME Shell session, and while opinions vary, in my experience it’s fairly well-behaved for typical enduser use cases when left to its own devices. (No pun intended, I swear.)
systemd definition for pulseaudio in system-mode …
https://gist.github.com/awidegreen/6003640
systemd definition for pulseaudio in system-mode (example for archlinux). The pulseaudio developers explicitly recommend to NOT run pulseaudo system-mode! - pulseaudio.service
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