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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:
Pocket Adventures.com
http://www.pocketadventures.com/guide_config_usbaudio.asp
Configuring USB Audio These instructions are described in greater detail here. Create the sound configuration file (it should be blank): sudo nano /etc/modprobe.d/alsa-base.conf Enter the following three lines: options snd_usb_audio index=0 options snd_bcm2835 index=1 options snd slots=snd-usb-audio,snd-bcm2835
USB card as my default Audio Device - Raspberry Pi Stack ...
https://raspberrypi.stackexchange.com/questions/19705/usb-card-as-my-default-audio-device
The correct way to do it is to add options snd-usb-audio index=0 followed by options snd_bcm2835 index=1. Essentially what doing this is forcing the default sound module ( snd_bcm2835) to be disabled while the usb sound module ( snd-usb-audio) is enabled.
UbuntuStudio/UsbAudioDevices - Community Help Wiki
https://help.ubuntu.com/community/UbuntuStudio/UsbAudioDevices
options snd-usb-audio index=1,2,3,4 vid=0x046d,0x1397,0x0763,0x08bb \ pid=0x08c6,0x00bc,0x0199,0x2902 Information as of 2014, March 20 The restart of the alsa system can be done with the command "sudo alsa force-reload". If that does not help getting the sound working in the USB headset, a full reboot will do it.
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