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. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/508522 Title: Mic is not available with A2DP Bluetooth profile Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: Binary package hint: pulseaudio I'm testing a Nokia BH-905i headset (see http://www.wissel.net/blog/d6plinks/SHWL-8AZGGF ) on Ubuntu 10.10. The Bluetooth module correctly identifies the headset and the both audio profiles "HSP/ HFP Telephony duplex" and "A2DP High Fidelity Playback". For music playback only A2DP is suitable (HSP/HFP sounds like listening to music played through an old telephone). A2DP does not have an INPUT mode, so use of the headset for VoiP isn't possible. What would be needed is a separate selection to allow to select A2DP for output and HSP/HFP for input. Smartphones (a lot of them *nix based) phones do that (or they switch on the fly?). Formal structure: 1) Ubuntu 10.10 2) Pulse-Audio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu21.1 consisting og pluseaudio, pulseaudio-esound-compat, pulseaudio-module-bluetooth, pulseaudio-module-gconf, pulseaudio-module-x11, pulseaudio-utils 3) Select high quality audio output and still use the Bluetooth microphone 4) Had to choose: either high quality audio or "telephone quality" with microphone I can change the profile without the Bluetooth connection dropping, but that's ridiculous. E.g. listening to music, a call comes in. Then I would need to switch the profile before answering. Please note that in Windows, Mac OS, iOS, Android, and Windows Mobile it's done automatically. Check out attached screencast. ProblemType: Bug AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] Subdevices: 2/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: oivasyuv 2309 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xd8500000 irq 17' Mixer name : 'Analog Devices AD1984A' Components : 'HDA:11d4194a,103c30e8,00100400' Controls : 22 Simple ctrls : 14 Date: Sat Jan 16 22:31:41 2010 DistroRelease: Ubuntu 9.10 InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5) Package: pulseaudio 1:0.9.19-0ubuntu4 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-17.54-generic-pae SourcePackage: pulseaudio Uname: Linux 2.6.31-17-generic-pae i686 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/508522/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
