> You did not provide any information about kernel or OS.

Debian 8, AMD64, 3.16

> Are you not using
> pulse audio?

No, pulseaudio has been entirely removed from my machine.

> On the alsa page there are some instruction how to configure the devices
> properly, so that you have consistent mapping.

Unfortunately i have no idea what kind of device numbers are exists on the Audigy Rx and if ALSA recognize it badly, then the current layout maybe only partially correct. So, i don't know what aliases should i make.

As for the commands:

root@Csabi:~# uname -a
Linux Csabi 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u2 (2016-10-19) x86_64 GNU/Linux

root@Csabi:~# lsmod | grep snd
snd_emu10k1           148204  3
snd_util_mem           12747  1 snd_emu10k1
snd_hwdep              13148  1 snd_emu10k1
snd_rawmidi            27024  1 snd_emu10k1
snd_seq_device         13132  2 snd_rawmidi,snd_emu10k1
snd_ac97_codec        118711  1 snd_emu10k1
snd_pcm_oss            44798  0
snd_mixer_oss          22042  2 snd_pcm_oss
snd_pcm                88662  3 snd_pcm_oss,snd_ac97_codec,snd_emu10k1
snd_timer              26668  2 snd_pcm,snd_emu10k1
snd                    65338  13 snd_pcm_oss,snd_ac97_codec,snd_hwdep,snd_timer,snd_pcm,snd_rawmidi,snd_emu10k1,snd_seq_device,snd_mixer_oss
soundcore              13026  2 snd
ac97_bus               12510  1 snd_ac97_codec

root@Csabi:~# amixer

Result is here: http://oscomp.hu/depot/amixer.log

root@Csabi:~# amixer -c 0

Result is here: http://oscomp.hu/depot/amixer_c0.log

root@Csabi:~# amixer -c 1
Invalid card number.

> It could be something in kmix, but I doubt it.

Unless, it's really that ALSA reports badly something to KMix, it's a KMix issue.