[PD] selecting an alsa soundcard at startup

András Murányi muranyia at gmail.com
Mon Sep 5 21:24:58 CEST 2011

Sorry, I haven't read your message completely and I thought it was a
reiteration of Tim's original question. I think Tim will be alrite with the
alsa-base.conf solution, but your problem is trickier.


2011/9/5 Ingo <ingo at miamiwave.com>

> That's what I was thinking, too. But it doesn't work like this.
> The devices I create with udev show up in /dev.
> But the devices used by /etc/modprobe.d/alsa-base.conf :
> snd-emu10k1
> snd_intel8x0
> do not show up in /dev.
> That means the sound device names are created somewhere else. Names that I
> create with udev in /dev seem to be ignored by modprobe.d/alsa-base.conf.
> So the question is where are these sound card IDs generated and how could I
> create such an ID with udev?
> Ingo
> >>On Sun, Sep 4, 2011 at 14:33, Ingo <ingo at miamiwave.com> wrote:
> >>Has anybody had any success with udev?
> >>
> >>I need to use oss and have tried to create a udev.rule to connect two
> >>identical usb midi interfaces and identify them by the usb port.
> >>
> >>I ended up creating the devices in /dev/ and /dev/snd/ and named them
> >>/dev/midi1, /dev/midi2 and/or /dev/snd/midiC1D0, /dev/snd/C2D0.
> >>
> >>They show up correctly in the folder /dev/ but I don't know how to assign
> >>them to anything alsa-base.conf can use.
> >>
> >>The first one that gets plugged in is always midi1 no matter where I plug
> it
> >>in. If I plug only one of them into the second usb port it will create
> >>midi1 and midi2. alsa-base.conf cannot seem to use the udev rules.
> >>It looks like something is assigning the soundcard numbers before or
> after
> >>udev.
> >>
> >>Any ideas?
> >>
> >>Ingo
> >More than udev it might be a modprobe thing.
> >I have these rules in /etc/modprobe.d/alsa-base.conf :
> >
> >options snd-emu10k1 index=0
> >options snd_intel8x0 index=1
> >
> >...which make my Soundblaster card always be hw:0 and the motherboard
> sound
> >card be hw:1.
> >
> >Andras
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