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Using a USB Audio Device With a Raspberry Pi
https://computers.tutsplus.com/articles/using-a-usb-audio-device-with-a-raspberry-pi--mac-55876
options snd-usb-audio index=-2. At the moment, this line causes any USB audio devices that are detected to be pushed down the order list and …
UbuntuStudio/UsbAudioDevices - Community Help Wiki
https://help.ubuntu.com/community/UbuntuStudio/UsbAudioDevices
options snd-usb-audio index=-2 . and comment it out! (NEVER delete a line in a configuration file - you should always be able to roll back if it goes wrong!) In this configuration file, a '#' is used as a comment marker, so make the line look like: #options snd-usb-audio index=-2 . This line usually prevents a USB device grabbing the hw:0 slot.
Updating ALSA Config | USB Audio Cards with a …
https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/updating-alsa-config
options snd-usb-audio index=0. Note we removed the # at the start of the line. For the latest Raspbian Wheezy versions, look for this line instead: options snd-usb-audio index=-2. There's no # to remove in this case, just change the index from …
USB-AUDIO adapter microphone port on Raspberry Pi - …
https://support.plugable.com/t/usb-audio-adapter-microphone-port-on-raspberry-pi/6887
options snd-pcsp index=-2. Keep snd-usb-audio from beeing loaded as first soundcard. #options snd-usb-audio index=-2 options snd-usb-audio index=0 options snd_bcm2835 index=1. Prevent abnormal drivers from grabbing index 0. options bt87x index=-2 options cx88_alsa index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2
raspbian - Audio and microphone configuration of usb sound ...
https://raspberrypi.stackexchange.com/questions/28158/audio-and-microphone-configuration-of-usb-sound-card-on-r-pi
If you have already gone into /etc/modprobe.d/alsa-base.conf and changed options snd-usb-audio index=-2 to options snd-usb-audio index=0 then: First: sudo nano ~/.asoundrc. Second: Add . pcm.!default { type hw card 0 } ctl.!default { type hw card 0 …
Matrix:Module-usb-audio - AlsaProject
https://www.alsa-project.org/wiki/Matrix:Module-usb-audio
1 The module options for snd-usb-audio; 2 Introduction for Generic USB Audio Driver soundcard; 3 Quick installation. 3.1 Setting up modprobe and kmod support; 4 modules.conf. 4.1 Native devices; 4.2 Autoloading OSS/free emulation; 4.3 The .asoundrc file. 4.3.1 Software volume control; 5 Links
How to Assign USB Audio as primary sound device in …
https://www.crunchbang.org/forums/viewtopic.php?id=9852
Add: # Assign USB Audio as default sound card options snd_usb_audio index=-1. Delete these last TWO lines in the file: # Keep snd-usb-audio from beeing loaded as first soundcard options snd-usb-audio index=-2. New file should look like this:
Solving Onboard and USB Sound Card Issues in Alsa
https://www.smarthomebeginner.com/solving-onboard-and-usb-sound-card-issues-in-alsa/
options snd-usb-audio index=-2. to. #options snd-usb-audio index=-2. This allows USB sound card to take the default card status. Reboot and you should have your USB sound card as default. My XBMC audio settings are now: DTS: Enable Dolby: Enable Audio: default (ALSA) Passthrogh: default (ALSA)
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