Comment 21 for bug 508522

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Alexander Adam (7ql6) wrote : Re: Mic is not available with A2DP Bluetooth profile

Yes, obviously this seems to be anyhow tricky.
Some people say that A2DP doesn't support unidirectionaly streams (ie D. Brodzik and SpudULike here in this thread or like nick parlante found out by googling).

Some people say that it is possible but there are no headsets supporting it ( http://osdir.com/ml/linux.bluez.devel/2005-01/msg00187.html ) [1].

Otherwise it is working in other operating systems and also wikipedia says that "is designed to transfer a *uni-directional* 2-channel stereo audio stream" ( http://en.wikipedia.org/wiki/A2DP#Advanced_Audio_Distribution_Profile_.28A2DP.29 ).

I don't have any clue about, what things are working and what aren't. I just see the problem.

What would help:
2011 Alexander Skwar asked wether it is possible at least to switch the profiles automatically, depending on what are you doing (A2DP everytime you are just listening and HSP when starting a call with ekiga/skype).
Colin Guthrie responded that they are working on it ( http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-September/011296.html / http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-September/011300.html ).
But at least on my computer now with Ubuntu 13.04 and ASUS Zenbook UX31A, the standard choosen profile is HSP and therefore terrible sounding.

Anyhow, I also doesn't have the impression that we are making any progress here. :-)

[1] I have to admit that this message is from 2005 and not up-to-date for sure . I just
wanted to show that you will find many "facts" and opinions in the web.