[Pkg-bluetooth-maintainers] Bug#503033: bluez-audio: Cannot adjust a2dp volume

[Peter Chubb]

Package: bluez-audio
Version: 3.36-2

I have a bluetooth Philips a2dp headset that I can play music to using, e.g., 
  mplayer -ao alsa:device=bluetooth music.ogg

But there appears to be no way to adjust the volume of the audio.  
The bluetooth device does not appear in /proc/asound/cards, so alsamixer 
and friends don't see the bluetooth device.
Mplayer's inbuilt volume control seems to do nothing either.

I can't find any info on the bluetooth wiki or in /usr/share/doc on how 
to set up a daemon to listen to AVRP requests either, which is, I think, 
why the volume buttons on the headset do nothing.


-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.27 (PREEMPT)
Locale: LANG=en_US.ISO-8859-15, LC_CTYPE=en_US.ISO-8859-15 (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages bluez-audio depends on:
ii  libasound2                 1.0.16-2      ALSA library
ii  libc6                      2.7-15        GNU C Library: Shared libraries
ii  libglib2.0-0               2.16.6-1      The GLib library of C routines
ii  libgstreamer-plugins-base0 0.10.20-1     GStreamer libraries from the "base
ii  libgstreamer0.10-0         0.10.20-1     Core GStreamer libraries and eleme
ii  libxml2                    2.6.32.dfsg-4 GNOME XML library

bluez-audio recommends no packages.

bluez-audio suggests no packages.

-- no debconf information