This bug was fixed in the package pulseaudio -
1:15.99.1+dfsg1-1ubuntu2.2
---------------
pulseaudio (1:15.99.1+dfsg1-1ubuntu2.2) jammy; urgency=medium
[ Hui Wang ]
* d/p/0001-backend-native-Handle-multi-AT-commands-in-a-buffer.patch
- Lenovo Thinkplus XT99 bluetooth headset supports mSBC and could
issue multi AT commands when negotiating with pulseaudio, but
pulseaudio couldn't handle multi AT commands when processing one
buffer, this makes the HFP/HSP mode not work, cherry pick an
upstream commit to fix this issue. (LP: #2051895)
-- Hui Wang <hui.w...@canonical.com> Mon, 19 Feb 2024 11:08:35 +0800
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https://bugs.launchpad.net/bugs/2051895
Title:
Lenovo XT99 BT headset can't work in HFP profile
Status in HWE Next:
New
Status in pulseaudio package in Ubuntu:
Fix Committed
Status in pulseaudio source package in Jammy:
Fix Released
Status in pulseaudio source package in Mantic:
Fix Released
Status in pulseaudio source package in Noble:
Fix Committed
Bug description:
[Summary]
When use the ThinkPluse xt99 bluetooth head set to run the test
com.canonical.certification::bluetooth/audio_record_playback, it cannot record
the sound and playback.
It seems this device cannot switch to Hand free mode in this platform.
[Steps to reproduce]
Connect the ThinkPluse xt99, use the Handfree mode, then try to record some
voice.
[Expected result]
The bluetooth headset ThinkPluse xt99 can use as a MIC to input sound.
[Actual result]
The bluetooth headset xt99 cannot work in the Handfree mode.
[Failure rate]
100%
[Impact]
With the current Ubuntu 22.04 oem image, we try to connect the LENOVO
XT99 bt headset and let it work in HFP mode, we select HFP profile
from gnome sound-setting, but the microphone will not auto change to
bt microphone and the bt output could not work too. So this BT headset
could only work in A2DP mode with the current 22.04 OEM image.
And we tried ubuntu 22.04 generic image, mantic image and noble image,
none of them could make the headset work in HFP mode.
[Fix]
Cherry-pick a pulseaudio commit from upstream.
[Test]
I installed ubuntu 22.04 and 23.10 on 2 different Thinkpad laptops, then
upgraded the pulseaudio from my ppa (ppa:hui.wang/pa-testing), in theory my
change only affects bluetooth audio devices, it will not bring any impact to
non-audio bluetooth devices, here I did the test with 7 bluetooth audio devices
and 2 non-audio devices:
BT audio devices (pairing, connection, re-connection, playback and capture
all worked well):
PLT_BBTGO2 (headset)
Xiaomi Air3 SE (headset)
Crusher Wireless (headset)
SOAIY S18 (sound box)
HK Soho Wireless (headset)
Thinkplus XT99 (headset)
Wl-1000X (headset)
BT non-audio devices (pairing, connection, re-connection, key input all
worked well):
BT3.0 Keyboard
The Pinao 2 keyboard
[Where problems could occur]
This change will impact bt headset negotiation process in the pulseaudio,
so the possiblity of regression is limited to bt headset, it could make
the bt headset fail to connect, but this possibility is very low, we tested
the patch with different bt headset and bt speaker, all worked well.
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