[alsa-devel] [PATCH 0/6] snd-usb endpoint rework, version 7

Grant Diffey gdiffey at gmail.com
Mon Apr 16 14:00:27 CEST 2012

> > What about alsactl? Set the mixers once, then call "alsactl store". Does
> > that help?
Yes it does. however.. nothing in userspace calls alsactl restore on device

is this a udev/distribution problem or alsa's problem?

> Basically "alsactl init" then "alsactl restore" should initialize to
> a sane state.  But in the case of usb-audio, many things are still
> missing.
> The usb-audio driver doesn't initialize the mixer states unlike other
> drivers, and alsactl init seems assuming that the mixers are all muted
> / cleared when it's called.  So, partly a problem of alsactl init.
So alsactl store Ultra after setting all the controls and then running
alsactl restore works..

BUT.. I'm still stuck with a very similar problem in that nothing seems to
call alsaclt restore when the device is hotplugged.


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