dmix doesn't working

[tontudelbot]

Maybe its a boring toipc, but i need help...
I compiled my kernel wirth alsa as a module and emerge alsa utils and rc-updated alsasound I configured /etc/modues.conf:

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##  ALSA portion
alias snd-card-0 snd-intel8x0
##  OSS/Free portion
alias sound-slot-0 snd-card-0

# OSS/Free portion - card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss

options snd cards_limit=2

and too /etc/asound.conf:

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pcm.intel8x0 {
   type hw
   card 0
}

ctl.intel8x0 {
   type hw
   card 0
}

But i cant get dmixer working I think im not missing any step but thats have to be something stupid...
any suggestions? thanks! see you!

[wellwhoopdedooo]

Try a blank asound.conf. dmix should be on by default now, your config file is overriding that.

[tontudelbot]

not works when i execute alsaplayer says:

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$ alsaplayer -o alsa -d plug:dmix '/home/johan/Música/Vespre (nova versió).mp3'
ALSA lib pcm_direct.c:937:(snd_pcm_direct_initialize_slave) unable to install hw params
ALSA lib pcm_dmix.c:874:(snd_pcm_dmix_open) unable to initialize slave
snd_pcm_open: Inappropriate ioctl for device (plug:dmix)
Failed to initialize plugin!
Failed to register plugin: /usr/lib/alsaplayer/output/libalsa_out.so
Failed to load output plugin "alsa". Trying defaults.
ALSA lib pcm_direct.c:937:(snd_pcm_direct_initialize_slave) unable to install hw params
ALSA lib pcm_dmix.c:874:(snd_pcm_dmix_open) unable to initialize slave
snd_pcm_open: Inappropriate ioctl for device (plug:dmix)
Failed to initialize plugin!
/usr/lib/alsaplayer/output/libalsa_out.so failed to load

But it plays the song. Arts doesn't works too. I don't know how really alsa works so i don't see where is the problem.

[wellwhoopdedooo]

Try taking out the "-d plug:dmix".

[tontudelbot]

Says the same.
The problem is that i can't play a song from amarok while im listening another from kaffeine (for example) or arts doesn't play anything. This is a problem from dmix, isnt?

[manny15]

I've been having dmix issues with alsa 1.0.12_rc1. mplayer and xine produce an error with libsound.so.2.

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alsa-init: using device default

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1223869872 (LWP 12868)]
0xb7e243e3 in snd_pcm_direct_parse_bindings () from /usr/lib/libasound.so.2

I tried recompiling mplayer, but it didn't work. So, I downgraded to alsa 1.0.11 in the mean time, and that fixed the problem. The alsa-lib-1.0.12_rc1.ebuild says the following.

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Starting from alsa 1.0.11_rc3 the configuration for dmix is changed.
Leaving around old asound.conf or ~/.asoundrc might make all apps ewarn using ALSA output crash.
Note that dmix output is enabled by default on the 'default' device since ALSA 1.0.9.

The dmix config has changed, but the ebuild does not explain what has changed. It seems to suggest that /etc/asound.conf and $HOME/.asoundrc should be removed. But I find this could be troublesome for users with elaborate alsa config files. So, I'm not sure what needs to be done to make alsa 1.0.12 work properly.

[toon]

It seems to suggest that /etc/asound.conf and $HOME/.asoundrc should be removed.

I was experiencing the same problem, and can confirm that sound started working again after removing ~/.asoundrc

[quadbox]

what happens if you make your /etc/asound.conf like the following?

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pcm.dsp0 {
  type plug
  slave.pcm "dmix"
}

pcm.!default {
  type plug
  slave.pcm "dmix"
}