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Hot-Plugging USB Devices (System Administration Guide ...

https://docs.oracle.com/cd/E19683-01/806-4073/6jd67r9ea/index.html

When you hot-plug a USB device, the device is immediately seen in the system's device hierarchy, as displayed in the prtconf command output. When you remove a USB device, the device is removed from the system's device hierarchy, unless the device is in use. If the USB device is in use when it is removed, the hot-plug behavior is a little different.

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

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

Since upgrading (from 12.04) to 14.04.1, when I hotplug my USB headset, it does not work right. It won't show up in capture controls, sometimes not even in playback devices. I have to fiddle with pavucontrol to even get it to do that. When it does, it thinks it's an input-only device.

stavrakis' blog: Pulseaudio: USB sound device hotplug

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

- Use udev to identify the USB sound device plugging in. - Run pacmd to set default source & sink as the current user. In this example, I used a Speedlink Medusa 5.1 USB headset, which is configured in pulseaudio as "Analog Surround 5.1 Output & Analog Stereo Input". The system I'm using therefore has these devices: 1. Intel HD Audio 2. USB sound device

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

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

Re: [SOLVED] how to hotplug usb audio card? Set the usb card as your default/fallback device in pavucontrol, that way streams will be pushed to the usb when they appear. Also make sure you load module-switch-on-connect (if it already is there and it doesn't work, try putting the respective line after udev-detect, contrary to what the comment says) in …

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:

[SOLVED] USB audio card hotplug behavior is... very ...

https://bbs.archlinux.org/viewtopic.php?id=212593

1) computer is "docked" already, audio card was found and then disappeared already, and then i plug in a thumb drive to the docking station. result: it kicks off a re-association with the USB hub, re-locates the audio card, and all is right with the world. 2) computer is not docked, docking station has USB thumb drive plugged in already, and ...

[Solved] USB DAC Hotplug - Development talks - Volumio

https://community.volumio.org/t/solved-usb-dac-hotplug/2345

playing sound through an USB DAC (in my case a DENON DA-300USB - wonderfull DAC ) at a RPi with Volumio 1.51 works perfect as long as the DAC is powered on and plugged in before the RPi is booted. when Volumio is running and you unplug/switch off your DAC and you replug/switch on your DAC (“Hotplugging”), the DAC won’t play your music.

- Dagogo

https://www.dagogo.com/

[email protected]

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