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PulseAudio/Examples - ArchWiki - Arch Linux
https://wiki.archlinux.org/title/PulseAudio/Examples
Restart PulseAudio, run pavucontrol and select the "Output Devices" tab. Three settings should be displayed: Internal Audio Digital Stereo (HDMI) Internal Audio Simultaneous output to Internal Audio Digital Stereo (HDMI), Internal Audio Now start a program that will use PulseAudio such as MPlayer, VLC, mpd, etc. and switch to the "Playback" tab.
pulseaudio - How to get a NI Traktor Audio 2 sound card ...
https://askubuntu.com/questions/214749/how-to-get-a-ni-traktor-audio-2-sound-card-work-with-mixxx
So for testing purposes, on the command line I can execute aplay to check each channel: aplay -D plughw:2,0,0 test.wav. and. aplay -D plughw:2,0,1 test.wav. That works well: I can hear the test sound on each channel (A and B) The relevant output for this card using aplay -D is: hw:CARD=TraktorAudio2,DEV=0 Traktor Audio 2, Traktor Audio 2 Direct ...
DeviceNames - AlsaProject
https://www.alsa-project.org/wiki/DeviceNames
This should also be fine if you only target specific hardware that you know for sure how it behaves when using the "hw" device name. plughw. TODO: What's this? Capture device names. TODO: Are there other valid device names than "default" and "hw"? Pulseaudio uses "front", but I'm not totally sure if it's officially supported.
[Alsa-user] Are hw & plughw different?
https://alsa-user.narkive.com/si5mskf7/are-hw-plughw-different
No hw:0,0 talks directly to hardware (without conversions. Plug is a plugin to. convert the format and sampling rate in order to connect the input to the. output. So the conf you wrote is equivalent to plughw:0,0 not to hw:0,0. Anyway I recomend to …
what device name should I have to give in ... - Stack Exchange
https://unix.stackexchange.com/questions/139782/what-device-name-should-i-have-to-give-in-snd-pcm-open-other-than-default
ALSA hw devices can only be opened once, so as soon as Pulseaudio has opened them, you'll get a "busy" error if you try to access them via the ALSA API. That also applies to plugins provided automatically, like front, plughw etc. You got away using plughw because Pulseaudio hadn't already opened them when you tried, this won't work in general.
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