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Solving Onboard and USB Sound Card Issues in Alsa
https://www.smarthomebeginner.com/solving-onboard-and-usb-sound-card-issues-in-alsa/#:~:text=%23options%20snd-usb-audio%20index%3D-2%20This%20allows%20USB%20sound%20card,should%20have%20your%20USB%20sound%20card%20as%20default.
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 …
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 …
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.
How to Assign USB Audio as primary sound device in …
https://www.crunchbang.org/forums/viewtopic.php?id=9852
# 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
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)
How to make Raspberry Pi use an external USB sound card as ...
https://superuser.com/questions/989385/how-to-make-raspberry-pi-use-an-external-usb-sound-card-as-a-default
Open /etc/modprobe.d/raspi-blacklist.conf and add blacklist snd_bcm2835. Allow the USB audio device to be the default device. Open /lib/modprobe.d/aliases.conf and comment out the line options snd-usb-audio index=-2; Reboot sudo reboot; Test it out. $ aplay /usr/share/sounds/alsa/Front_Center.wav
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
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