[alsa-devel] ALSA sound/usb/mixer.c:415 cannot get current value for control 2 ch 1: err = -22

[Eldad Zack]

On Thu, 6 Dec 2012, Joe Cooper wrote:
> On most HP Envy laptops the snd-usb-audio module causes the system to
> become unresponsive and Gnome Shell 3 to crash. This effects every kernel
> I've tried from 3.3.4 on up to 3.7rc8. It also produces these errors on the
> console:
> 
> ALSA sound/usb/mixer.c:415 cannot get current value for control 2 ch 1: err
> = -22
> 
> ALSA sound/usb/clock.c:228 3:1:1: cannot set freq 44100 to ep 0x1
> 
> Blacklisting this module allows the system to function, but with most of
> its speakers not working. It also prevents use of other USB audio devices,
> making multitrack recording impossible.
> 
> I have a ticket about it in the Fedora bug tracker, but was referred to
> alsa-devel. That ticket links to other discussions of this bug, as well.
> Here's that ticket: https://bugzilla.redhat.com/show_bug.cgi?id=884368
> 
> alsa-info is here: https://bugzilla.redhat.com/attachment.cgi?id=658989
> 
> Please let me know if you need further details, or if there's anything else
> I can do to help troubleshoot this.

Hi Joe,

I can try to help.

Do you get any sound output at all (even if it stutters or sounds 
wrong)?

Can you please send the output of "lsusb -v -d 0424:b832"?
I think I can work out a patch for you to skip this device, so 
you can use other audio usb devices until this gets proper support.

Cheers,
Eldad