Bug#658728: linux-image-3.2.0-1-amd64: No more sound

[Takashi Iwai <tiwai@suse.de>]

At Tue, 7 Feb 2012 21:16:57 -0500,
A. Costa wrote:
> 
> On Tue, 07 Feb 2012 10:17:37 +0100
> Takashi Iwai <tiwai@suse.de> wrote:
> 
> > > On the good kernel (3.1.0-1), this happens:
> > > 
> > > 	% amixer -c0 set "Auto-Mute Mode" Disabled ; echo $?
> > > 	amixer: Unable to find simple control 'Auto-Mute Mode',0
> > > 
> > > 	1
> > > 
> > > Haven't tried that 'amixer' command on the silent kernel (3.2.0-1).
> > 
> > The question above was only for 3.2 kernel.  It wasn't enabled for 3.1
> > kernel for your device unless you passed model=auto explicitly.
> 
> Success:
> 
> 	% cat /proc/version 
> 	Linux version 3.2.0-1-686-pae (Debian 3.2.4-1) (waldi@debian.org) (gcc version 4.6.2 (Debian 4.6.2-12) ) #1 SMP Sun Feb 5 23:52:49 UTC 2012
> 
> 	% amixer -c0 set "Auto-Mute Mode" Disabled ; echo $?
> 	Simple mixer control 'Auto-Mute Mode',0
> 	  Capabilities: enum
> 	  Items: 'Disabled' 'Enabled'
> 	  Item0: 'Disabled'
> 	0
> 
> Sound silently playing in the background (via 'audacious' and
> 'pulseaudio') suddenly went on.  The headphones when plugged in also
> worked correctly.

Do you mean that the speaker is still muted automatically with the
headphone plugging, even though "Auto-Mute Mode" mixer element is
disabled?  Or the speaker keeps playing?

> Exactly which jacks were tested before: the line out (the main stereo
> only), and the headphone jack.  Did not test surround, line in, or the
> mic.  (I don't ordinarily use those jacks.)
> 
> At present the additional tests you suggested, ('hda-verb', 'aplay', and
> 'pasuspender'), might not be necessary.  If those would still be useful,
> please say so.

If disabling auto-mute mode fixes the thing, I'll create a blacklist
and add this device to it so that this control won't be created in
future.


thanks,

Takashi