[Alsa-user] Problem: using amixer with Soundblaster PCI 128

[Kistbier <kis...@gm...>]

Hi,

I have built a mp3-player using LRP (www.linuxrouter.org) as OS. First
I used the built-in driver from Kernel 2.2.19, but with this one I
wasn't able to change the settings of bass and treble.

So I downloaded alsa-driver 0.5.12a, alsa-lib 0.5.10b and alsa-utils 0.5.10, cross-compiled them
(LRP uses glibc 2.0.7) and put them on my mp3-player.

The modules are loaded in this order:

snd
snd-timer
snd-rawmidi
snd-pcm
snd-pcm-plugin
snd-mixer
snd-mixer-oss
snd-pcm-oss
snd-ac97-encode
snd-ens1371
snd-card-ens1371


First I tried to create the devices with the snddevices-script, but
that didn't work, so I installed them by hand:


Device:           Major:    Minor:

sndstat           14        6
music             14        8
mixer0            14        0
dmmidi0           14        9
dmfm0             14        10
amixer0           14        11
adsp0             14        12
amidi0            14        13
admmidi0          14        14
sequencer         14        1
midi0             14        2
dsp0              14        3
audio0            14        4

.. then created the symlinks ....

ln -sf /dev/mixer0 /dev/mixer
ln -sf /dev/midi0 /dev/midi
ln -sf /dev/dsp0 /dev/dsp
ln -sf /dev/audio0 /dev/audio
ln -sf /dev/music /dev/sequencer2
ln -sf /dev/adsp0 /dev/adsp
ln -sf /dev/amidi0 /dev/amidi

.. then created /dev/snd and made these devices:

controlC0          116       0
seq                116       1
hwC0D0             116       34
mixerC0D0          116       38
pcmC0D0            116       48
midiC0D0           116       40

.. then made a symlink ....

ln -sf /proc/asound/dev /dev/snd

.. and created these devices:

aloadC0            116       32
aloadSEQC0         116       33



Now when I try to run amixer, it always says:


"amixer: Mixer 0/0 open error: operation not supported by device"


"cat /proc/asound/mixerD0" reports this:

Mixer 'AC97' 'SigmaTel STAC9721/23'
Elements 46
Groups 11
Switches 3


"cat /proc/asound/cards" reports this:

0[card 1] AudioPCI - Ensoniq AudioPCI
          Ensoniq AudioPCI ES 1371
          at 0x5000, irq 15


What's wrong ? Can somebody please help me ?


Greets from germany,

Marco Glatz