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Set default pulseaudio volume - Ask Ubuntu
https://askubuntu.com/questions/476619/set-default-pulseaudio-volume#:~:text=With%20PulseAudio%208.0%20on%20Ubuntu%2016.04%20and%20a,volume%20to%2050%25%20on%20boot%20set-sink-volume%200%2032768
pulseaudio - /etc/pulse/default.pa ... - Ask Ubuntu
https://askubuntu.com/questions/1017529/etc-pulse-default-pa-permission-denied
When running pulseaudio in userspace (this is the default) settings we had made in this file will override the system-wide /etc/pulse/default.pa on the next restart of the pulseaudio sound server (e.g. with pulseaudio -k ). Only if system-wide settings need to be made for all users we may edit /etc/pulse/default.pa with root privileges.
Ubuntu Manpage: default.pa - PulseAudio Sound Server ...
https://manpages.ubuntu.com/manpages/bionic/man5/default.pa.5.html
DESCRIPTION The PulseAudio sound server interprets a configuration script on startup, which is mainly used to define the set of modules to load. When PulseAudio runs in the per-user mode and ~/.config/pulse/default.pa exists, that file is used. When PulseAudio runs in the per-user mode and that file doesn't exist, /etc/pulse/default.pa is used.
Ubuntu Manpage: default.pa - PulseAudio Sound Server ...
https://manpages.ubuntu.com/manpages/precise/man5/default.pa.5.html
Provided by: pulseaudio_1.1-0ubuntu15_amd64 NAME default.pa - PulseAudio Sound Server Startup Script SYNOPSIS ~/.pulse/default.pa /etc/pulse/default.pa DESCRIPTION ...
Setting the default ALSA device for Pulseaudio - Ask Ubuntu
https://askubuntu.com/questions/294512/setting-the-default-alsa-device-for-pulseaudio
You can select the default device in PulseAudio with a GUI like the GNOME volume control, pavucontrol, or from the command line using pacmd set-default-sink. By default, PulseAudio opens devices for 44.1 kHz or 48 kHz, whichever leads to lower resampling effort (so 96 kHz audio would usually lead to the device being opened at 48 kHz.
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