[alsa-devel] Volume control channels mixed
tiwai at suse.de
Tue Apr 10 12:07:24 CEST 2007
At Tue, 10 Apr 2007 12:04:48 +0200,
Simon van der Linden wrote:
> Takashi Iwai wrote:
> > At Mon, 09 Apr 2007 11:30:58 +0200,
> > Simon van der Linden wrote:
> >> Hello,
> >> I use Alsa in the latest Ubuntu bêta, with my MacBook.
> >> lspci gives the audio card as:
> >> 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High
> >> Definition Audio Controller (rev 02)
> >> Sound is working pretty good. However, volume control channels (in
> >> alsamixer) are mixed:
> >> with laptop speakers:
> >> Master controls treble volume
> >> Front controls bass volume
> >> with headphones:
> >> Master has no effect
> >> Front controls the volume
> >> I'm unfamiliar with Alsa, but I guess it shouldn't be too hard to
> >> correct that. Browsing the web didn't give me more informations.
> >> Perhaps some of you could help me?
> > Which kernel and which ALSA version?
> Alsa 1.0.13
> Linux 2.6.20
Too old :)
There are giga tons of bug fixes regarding HD-audio after 2.6.20. Try
to build ALSA modules externally from the latest ALSA driver tree.
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