[alsa-devel] Alsamixer isn't working properly with HDA VIA VT82xx with Realtek ALC888 Codec

[Takashi Iwai]

At Fri, 30 Jan 2009 19:10:54 +0100,
Stephan Jänecke wrote:
> 
> Dear developers,
> alsamixer doesn't work on my fedora machine. When I type in 'alsamixer -c 0',
> I get
> 		"hda_codec: num-steps=0 for NID=0xf (ctl=Side Playback Volume)"
> 		"alsamixer: function snd_mixer_load failed: Invalid argument"
> 
> Although Pulseaudio and OSS Mixers seem to be present, I don't get any sound.
> Please have a look at http://www.alsa-
> project.org/db/?f=15c9f665eb141dee755a533d804456e81442f270
> or check the attachment.
(snip)
> Codec: Realtek ALC888
> Address: 0
> Vendor Id: 0x10ec0888
> Subsystem Id: 0x18491e01
> Revision Id: 0x100001
> No Modem Function Group found
> Default PCM:
>     rates [0x0]:
>     bits [0x0]:
>     formats [0x0]:
> Default Amp-In caps: N/A
> Default Amp-Out caps: N/A
> Invalid AFG subtree

This looks weird.  Could you try the latest alsa-driver snapshot
and see whether you get a better (complete) /proc/asound/card0/codec#*
outputs?
   ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz

If you still get a strange output, try to load the module with
probe_only=1 option and get the codec proc output.


thanks,

Takashi