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stavrakis' blog: Pulseaudio: USB sound device hotplug

https://stavrakisblog.blogspot.com/2012/03/pulseaudio-usb-sound-device-hotplug.html

Pulseaudio: USB sound device hotplug When using Pulseaudio and pavucontrol, one can easily change the default sound device by clicking the fallback button on the device. However, this assumes that the default device is always connected.

Gentoo Forums :: View topic - [solved] pulseaudio vs usb ...

https://forums.gentoo.org/viewtopic-t-1092160.html

Hotplug on this device was detected until recently - some update must have disabled hotplugging The USB soundcard itself is detected (I see messages in dmesg) but pulseaudio does not pick it up in the list of output devices.

PulseAudio under the hood - Victor Gaydov

https://gavv.github.io/articles/pulseaudio-under-the-hood/

PulseAudio supports several backends to interact with hardware devices and controls. It supports hotplug and automatically configures new devices. Sound processing. PulseAudio implements various sound processing tools, like mixing, sample rate conversion, and acoustic echo cancellation, which may be employed manually or automatically. Sample cache

14.04 - USB audio device not fully working after hotplug ...

https://askubuntu.com/questions/537166/usb-audio-device-not-fully-working-after-hotplug

14.04 sound usb pulseaudio hotplug. Share. Improve this question. Follow asked Oct 14 '14 at 21:58. Joshua Kugler Joshua Kugler. 11 2 2 bronze badges. 1.

The PulseAudio Sound Server

https://esselfe.ca/docs/Pulseaudio-conf.pdf

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PulseAudio/Examples - ArchWiki

https://wiki.archlinux.org/title/PulseAudio/Examples

Correct interaction with PulseAudio is done using a D-Bus based audio card "acquire/release" mechanism. When JACK server starts, it asks this D-Bus service to acquire the audio card and PulseAudio will unconditionally release it. When JACK server stops, it releases the audio card that can be grabbed again by PulseAudio.

[SOLVED] how to hotplug usb audio card? / Newbie Corner ...

https://bbs.archlinux.org/viewtopic.php?id=192281

then i pluged in the usb sound card, and the sound from the inner sound card stoped. then i switched my speaker's cable from the inner sound card to the usb sound card and the music is playing there as it should be :-) i have 2 questions: 1. if pulseaudio is installed, is it "masks" alsa configuration, so i can use just pulseaudio's configuration?

GitHub - naftulikay/autopulse: Dynamically change ...

https://github.com/naftulikay/autopulse

Dynamically change PulseAudio sinks on hotplug events. - GitHub - naftulikay/autopulse: Dynamically change PulseAudio sinks on hotplug events.

USB hotplugging — The Linux Kernel documentation

https://www.kernel.org/doc/html/v4.13/driver-api/usb/hotplug.html

The USB subsystem currently invokes /sbin/hotplug when USB devices are added or removed from system. The invocation is done by the kernel hub workqueue [hub_wq], or else as part of root hub initialization (done by init, modprobe, kapmd, etc). Its single command line parameter is the string “usb”, and it passes these environment variables ...

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