[alsa-devel] really no idea? Re: low volume with hda base card (see attached alsa-info output

Halim Sahin halim.sahin at freenet.de
Mon Dec 13 14:18:34 CET 2010

Sorry for using this old thread :-(.

On Mo, Aug 23, 2010 at 08:18:46 +0200, Takashi Iwai wrote:
> First off, try with the latest version of alsa-driver.
> Get the snapshot version from
>   ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz
Done. Compilation and load of the modules are ok but the volume stays
low on the rear panel of the computer.

> If this doesn't help, try to set EAPD on NID 0x14 and/or 0x15, set it
> to 0x02.  Get hda-verb program (available on OBS home:tiwai repo),
> then run like
> 	hda-verb /dev/snd/hwC0D0 0x14 SET_EAPD 0x02
> 	hda-verb /dev/snd/hwC0D0 0x15 SET_EAPD 0x02

also no success with hda-verb.
Do you have more ideas what I can test?

Maybe this aditional info helps you :-).
I noticed a difference in volume between headphone (front connector) and
the line out (rear panel connector).
The volume is higher when using the headphone connector but should also
be improoved a bit :-(.
this info is from alsamixer and the new driver:
Card: HDA NVidia
    Chip: Nvidia ID 7
This info is from the orginal driver of kernel 2.6.34:
  Card: HDA NVidia
    Chip: Nvidia MCP79/7A HDMI

Why does alsamixer show     Chip: Nvidia ID 7 with new driver?

All help appreciated ;-)


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