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

[Takashi Iwai <tiwai@suse.de>]

At Fri, 10 Feb 2012 18:57:34 -0500,
A. Costa wrote:
> 
> On Fri, 10 Feb 2012 11:58:46 +0100
> Takashi Iwai <tiwai@suse.de> wrote:
> 
> > > 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?
> 
> When plugged in, the headphones played and the speaker muted.
> Unplugging the phones, the speakers play.
> 
> At the risk of being redundant, here's what I have so far:
> 
> First off, with plain kernel v3.2.0-1-686-pae, I run 'audacious' with a
> playlist.  'pavucontrol' shows movement.  The speakers are mute.
> Plugged in, the headphone are also mute.
> 
> Then I ran 'amixer -c0 set "Auto-Mute Mode" Disabled'.
> The speakers (line out) play.  Plug in the headphones, the speaker
> mutes, the headphones play.  Unplug the phones, the speakers play.

Thanks for confirmation.

I fixed the upstream code no to create the superfluous Auto-Mute
control.  But the change is a bit intrusive so it's targeted only for
3.4 kernel, as you can work around it easily by turning off Auto-Mute
even in the current tree.


Takashi