Hi,
I've got 2 usb audio device, a midi controller and a usb midisport for midi outputs/inputs.
In /etc/modprobe.d/alsa-base.conf there's a rule:
options snd-usb-audio index=-1
Normally, usb audio shouldn't index 0 as a remember correct like this, but unfortunately they steal sometimes index 0, in that case
i don't have audio.
Index 0 should always be my internal soundcard on my motherboard.
How can i prevent usb audio from taking index 0?
Thank you,
Stijn
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usb audio devices steal index 0
Re: usb audio devices steal index 0
What debian ver are you using? I don't have anything in /etc/modprobe.d but I do have /lib/modprobe.d/aliases.conf that has some similar settings.
Code: Select all
$ grep snd /lib/modprobe.d/aliases.conf
options snd-pcsp index=-2
options snd-usb-audio index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
$ apt policy alsa-utils
alsa-utils:
Installed: 1.1.3-1
Candidate: 1.1.3-1
Version table:
*** 1.1.3-1 500
500 http://deb.debian.org/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status
$ apt policy kmod
kmod:
Installed: 23-2
Candidate: 23-2
Version table:
*** 23-2 500
500 http://deb.debian.org/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status
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Re: usb audio devices steal index 0
I'm using debian testing/unstable.
Just found the file also and it has same settings as yours.
This morning i changed the option to index= -2 instead of -1 and after a reboot usb audio devices didn't steal index 0 anymore.
(i have no id what is so different on -2 and -1)
hopefully it stays like this in the future.
Thank you for your input.
Stijn
Just found the file also and it has same settings as yours.
This morning i changed the option to index= -2 instead of -1 and after a reboot usb audio devices didn't steal index 0 anymore.
(i have no id what is so different on -2 and -1)
hopefully it stays like this in the future.
Thank you for your input.
Stijn
Re: usb audio devices steal index 0
back to the beginning.
Usb-audio is again stealing my index 0...
$ cat /etc/modprobe.d/alsa-base.conf
blacklist snd_hda_codec_hdmi
options snd-usb-audio index=-2
options snd-hda-intel enable=0,1 snoop=0
What can i do more to prevent usb audio taking index 0?
Usb-audio is again stealing my index 0...
$ cat /etc/modprobe.d/alsa-base.conf
blacklist snd_hda_codec_hdmi
options snd-usb-audio index=-2
options snd-hda-intel enable=0,1 snoop=0
What can i do more to prevent usb audio taking index 0?
Re: usb audio devices steal index 0
what are these options doing?cajmere wrote:Usb-audio is again stealing my index 0...
$ cat /etc/modprobe.d/alsa-base.conf
blacklist snd_hda_codec_hdmi
options snd-usb-audio index=-2
options snd-hda-intel enable=0,1 snoop=0
why "-1" and "-2"? why not "1" or "2"?
have you tried the other way - forcing the internal card to be index 0?
maybe like: options snd-hda-intel index=0