[Pkg-xfce-devel] Bug#711460: xfce4-mixer: changing sound volume not working after muting

[Arnaud Installe]

I see the same behaviour:

With headphones plugged in:

1/ In xfce4's panel plugin mixer: right-click -> select 'mute'

   -> xfce4-mixer shows Master & Headphone muted. (IIRC, with headphones not
      plugged in, Speaker & PCM are muted instead of Headphone.)
   -> unmuting through xfce4's panel plugin mixer only unmutes Master
      channel, leaving Headphone still muted.
   -> xfce4-mixer needs to be opened to unmute each muted channel

2/ In xfce4's panel plugin mixer: turn down volume "low enough" (not zero)

   -> volume suddenly drops to zero.
   -> xfce4-mixer shows Master, Headphone and PCM are set to volume zero.
   -> turning up the volume again through xfce4's panel plugin mixer only
      increases volume of Master channel, leaving Headphone & PCM at zero.
   -> again, xfce4-mixer needs to be opened to increase volume of Headphone
      & PCM channels.

So the bugs are as follows:

* Muting/unmuting and increasing/decreasing volume should act on the same
  channels, instead of being asymmetric.

* Decreasing volume should be continuous, instead of suddenly dropping to
  zero below a certain threshold.

Arnaud

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