8 Sep
2006
8 Sep
'06
4:37 p.m.
Hi everyone,
I'm sorry if this has been dealt with before but I can't seem to find
anything about it...
I have two sound interfaces in my Debian unstable PC box: one being the
motherboard (ASUS P4P800SE) chipset's (Intel ICH5) and the other a M
Audio Delta 66.
I want to be able to use both, the internal for mp3 playback/plain music
listening and the Delta for music making (mainly Pure Data). I created
aliases for the interfaces (in /etc/asound.conf) as indicated in Alsa's
website docs:
pcm.!default {
type hw
card 0
}
ctl.!default {
type hw
card 0
}
pcm.ICH5 {
type hw
card 1
device 0
}
pcm.Delta66 {
type hw
card 0
device 0
}
The remaining problem is that everytime I reboot, the order of the hw:0
and hw:1 is sometimes swapped i.e. one day hw:0 will be the ICH5 and the
next day could be that the Delta is detected as hw:0.
What do I have to do so that one order is preserved upon
reboot/re-detection of the interfaces?
++
Jé
8 Sep
8 Sep
4:44 p.m.
Hi,
What do I have to do so that one order is preserved
upon
reboot/re-detection of the interfaces?
/etc/modules.d/alsa on my Gentoo box:
alias snd-card-0 snd-intel8x0
alias sound-slot-0 snd-intel8x0
alias snd-card-1 snd-intel8x0m
alias snd-card-2 snd-usb-audio
alias snd-card-3 snd-usb-audio
alias snd-card-4 snd-usb-audio
alias snd-card-5 snd-usb-audio
alias snd-card-6 snd-usb-audio
alias snd-card-7 snd-virmidi
options snd-intel8x0 index=0
options snd-intel8x0m index=1
options snd-usb-audio index=2,3,4,5,6
vid=0x0582,0x0763,0x0763,0x0582,0x0ccd
pid=0x0074,0x1033,0x0117,0x0009,0x0028 nrpacks=1
options snd-virmidi index=7 midi_devs=2
ce
4:59 p.m.
On Fri, 2006-09-08 at 20:37 +0200, Jerome Tuncer wrote:
What do I have to do so that one order is preserved
upon
reboot/re-detection of the interfaces?
With correct applications it should not be necessary to do anything;
ALSA supports addressing devices by name. The .asoundrc should nto be
needed either - in fact it could cause problems as you have defined the
default devices to be hw:x which will bypass dmix.
aplay -D default:ICH5 file.wav
should play to the Intel card, and
aplay -D default:Delta66 file.wav
to the Delta66.
Lee
7:36 p.m.
Thanks guys!
Juuso, I think that's the kind of workaround I needed.
There are still things I don't really understand with ALSA naming as Lee
mentions:
Let's take XMMS Alsa output plugin for example. It just asks for a
device and the list displays exactly:
Périphérique PCM par défaut (default)
MAudio Delta 66: ICE1712 multi (hw:0,0)
Intel ICH5: Intel ICH5 (hw:1,0)
Intel ICH5: Intel ICH5 - IEC1958 (hw:1,4)
I tried what you said Lee about just providing a name to the driver,
that is just writing "Intel ICH5" in the textfield and it doesn't seem
to work (I should I have mentioned I have deleted my /etc/asound.conf
and restarted the ALSA drivers)...
How can ALSA refer to a card by just name without me providing the name
in my /etc/asound.conf?
Sorry for the noob question if it is one (-:
++
Jé
Lee Revell a écrit :
On Fri, 2006-09-08 at 20:37 +0200, Jerome Tuncer
wrote:
What do I have to do so that one order is
preserved upon
reboot/re-detection of the interfaces?
With correct applications it should not be necessary to do anything;
ALSA supports addressing devices by name. The .asoundrc should nto be
needed either - in fact it could cause problems as you have defined the
default devices to be hw:x which will bypass dmix.
aplay -D default:ICH5 file.wav
should play to the Intel card, and
aplay -D default:Delta66 file.wav
to the Delta66.
Lee
7:44 p.m.
On Fri, 2006-09-08 at 23:35 +0200, Jerome Tuncer wrote:
Thanks guys!
Juuso, I think that's the kind of workaround I needed.
There are still things I don't really understand with ALSA naming as Lee
mentions:
Let's take XMMS Alsa output plugin for example. It just asks for a
device and the list displays exactly:
Périphérique PCM par défaut (default)
MAudio Delta 66: ICE1712 multi (hw:0,0)
Intel ICH5: Intel ICH5 (hw:1,0)
Intel ICH5: Intel ICH5 - IEC1958 (hw:1,4)
ALSA has no good device enumeration API and the device naming is
completely undocumented so many applications don't have a good device
list.
I tried what you said Lee about just providing a name
to the driver,
that is just writing "Intel ICH5" in the textfield and it doesn't seem
to work (I should I have mentioned I have deleted my /etc/asound.conf
and restarted the ALSA drivers)...
You have to use the name from /proc/asound/cards. Did you try entering
"default:ICH5"?
How can ALSA refer to a card by just name without me
providing the name
in my /etc/asound.conf?
Sorry for the noob question if it is one (-:
++
Jé
Lee Revell a écrit :
On Fri, 2006-09-08 at 20:37 +0200, Jerome Tuncer
wrote:
What do I have to do so that one order is
preserved upon
reboot/re-detection of the interfaces?
With correct applications it should not be necessary to do anything;
ALSA supports addressing devices by name. The .asoundrc should nto be
needed either - in fact it could cause problems as you have defined the
default devices to be hw:x which will bypass dmix.
aplay -D default:ICH5 file.wav
should play to the Intel card, and
aplay -D default:Delta66 file.wav
to the Delta66.
Lee
7:13 p.m.
Quoting Jerome Tuncer <columbiatwo(a)free.fr>fr>:
The remaining problem is that everytime I reboot, the
order of the hw:0
and hw:1 is sometimes swapped i.e. one day hw:0 will be the ICH5 and the
next day could be that the Delta is detected as hw:0.
What do I have to do so that one order is preserved upon
reboot/re-detection of the interfaces?
The problem is that the drivers aren't loaded in any set order during boot. This
is not a bug, it's a feature of the Linux kernel. Luckily you can give the
drivers index numbers so that they'll assume the same order every time no
matter which one is loaded first. This will mean you'll always have fixed ALSA
device numbering, too.
Assuming you're using a 2.6 series kernel and have built the drivers as kernel
modules, add these two lines in /etc/modprobe.conf (or create that file if it
doesn't exist):
options snd-usb-audio index=0
options snd-hda-intel index=1
(Notice that snd-usb-audio and snd-hda-intel are what I use for my Terratec USB
sound card and Intel HD Audio chip, you'll need to replace them with whatever
modules you use. Also notice that when some HOWTOs instruct you to modify
modules.conf instead of modprobe.conf they're referring to systems with 2.4
series kernels.)
If you have the drivers built-in, you can still assign index numbers to them by
adding something like this to the boot command (in GRUB or LILO):
snd-usb-audio.index=0 snd-hda-intel.index=1
Again you'll need to edit that to suit your needs.
Hope this helps,
Juuso
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5 comments
4 participants
participants (4)
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Christoph Eckert -
Jerome Tuncer -
juuso.alasuutari＠tamperelainen.org -
Lee Revell