[alsa-devel] amixer shows capability "penum" on every Simple mixer control

[Christian Esken (KDE)]

Am Dienstag, den 13.03.2012, 14:32 +0100 schrieb Takashi Iwai:
> At Tue, 13 Mar 2012 10:52:21 +0100,
> Takashi Iwai wrote:
> > 
> > At Mon, 12 Mar 2012 22:09:35 +0100,
> > Christian Esken (KDE) wrote:
> > > 
> > >  Hello,
> > > 
> > >  when I run amixer it shows the capability "penum" on nearly every 
> > >  Simple mixer control.
> > >  I posted the bug report 
> > >  https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5496 , but 
> > >  Raymond asked me to report it on this mailing list ("as it is related to 
> > >  this patch 6d511eefa05878abee9f8b9145697230de605200 Implements support 
> > >  for capture/playback enums.").
> > > 
> > >  I posted  details for the following two examples in 
> > >  https://bugtrack.alsa-project.org/alsa-bug/view.php?id=5496 :
> > > 
> > >  1) "Creative X-Fi" does not have any Enum's. alsamixer does not show 
> > >  Enums's. amixer lists "penum" for ALL Simple mixer controls.
> > > 
> > >  2) "HDA ATI SB" has no penum's, only 3 cenum's. alsamixer shows it 
> > >  correctly, but amixer disagrees and shows penum for NEARLY ALL Simple 
> > >  mixer controls (except for those with cpability "cenum").
> > > 
> > > 
> > >  I found this as I received several bug reports for KMix with "absurd" 
> > >  amixer output. I could perceive from those bug report that the bug is 
> > >  affecting a lot (or all?) sound cards.
> > 
> > Looks like a bug in alsa mixer abstraction, indeed.
> > Will take a look at it later.
> 
> I committed the fix to git tree now.  The fix patch is below.
> 

I compiled and installed the alsa-lib from git, and the existing old
executable (1.0.24.2 from openSUSE 12.1) now shows the correct values. I
also tested with amixer from git, and it also works for me.

Thanks for the quick fix.

   Christian