James Klaas wrote:
> I have noticed this too on more than a few USB audio devices.  You
> can set the volume manually in the asound.state file and restore the
> values from the changed file, but changing the volume in alsamixer
> just doesn't work.

The only difference between alsamixer and "alsactl restore" is that
alsamixer always sets the value of each channel separately.

Apparently, those USB devices do not implement all required variants of
the set mixer control command.


Regards,
Clemens



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