[alsa-devel] [PATCH] ALS4000, slight mixer improvements

Andreas Mohr andi at lisas.de
Mon Feb 23 10:26:36 CET 2009


On Mon, Feb 23, 2009 at 08:38:12AM +0100, Takashi Iwai wrote:
> Applied now.  Thanks.


> > Will now try to get HDA settings on Aspire One A110L investigated
> > (using Takashi's elaborate tools) and corrected
> > (the non-working microphone thingy, plus some weird random switching/activation
> > of noise in sound sources at times and stuff).
> Let me know if it's finished!

Maybe I should start for real first ;)

> > Speaking of sound problems, any thoughts about how to end up with
> > _automatic_, generic ALSA soft volume for those cheap non-hardvol USB sticks?
> The only problem right now is that the driver might give a real volume
> control but in a different name.  OTOH, softvol itself isn't too bad as
> default PCM definition.  Just editing USB-Audio.conf should suffice...

Probably something like
(referenced by https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/104130 )?

AFAICS, things should ideally work this way:
plug USB adapter, ALSA uses its default USB-Audio.conf settings (just like
with several other PCI and such cards), then for devices with non-existing
H/W volume (and only those!!), automatically and generically provide ALSA

Anyway, I'll look into it since it might be easy and is very important
to have _by default_.


Andreas Mohr

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