https://bugs.kde.org/show_bug.cgi?id=501501
Bug ID: 501501
Summary: Bluetooth headset loses audio after auto-switch
between playback modes
Classification: Plasma
Product: plasmashell
Version: 6.3.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Audio in general
Assignee: plasma-b...@kde.org
Reporter: myjunkmailbox2...@gmail.com
CC: isma...@gmail.com
Target Milestone: 1.0
SUMMARY
Bluetooth headset switches automatically between "High Fidelity Playback (A2DP
Sink, codec SBC)" to "Headset Head Unit (HSP/HFP, codec mSBC)" in certain
contexts, such as when entering a voice call or recording a voice note in chat
apps. afterwards the headset switches back, however - audio playback is fully
broken after the swtich back to "High Fidelity Playback" - nothing is heard. in
addition, engaging the microphone again in the same ways as before will result
again in the switch to "Headset Head Unit", however, this time audio will be
broken in this mode as well - playback and input both do not work.
trying to switch manually between playback modes when audio is broken does not
work. only solution is to restart the bluetooth headset - which gets very
tedious to do every time.
STEPS TO REPRODUCE
1. start your bluetooth headset and connect it.
2. playback mode is automatically selected as "High Fidelity Playback (A2DP
Sink, codec SBC)" and playback is normal.
3. engage the microphone via means of starting a voice call or recording an
audio message in your messaging app of choice.
4. playback mode automatically switches to "Headset Head Unit (HSP/HFP, codec
mSBC)" and playback and input are working as normal (you can hear people on the
voice call and they can hear you).
5. end the voice call/the voice note recording.
6. playback mode automatically switches back to "High Fidelity Playback (A2DP
Sink, codec SBC)"
OBSERVED RESULT
playback does not work at all.
repeat steps 3-4: now playback and input do not work at all (you can't hear
people on the voice call and they can't hear you).
EXPECTED RESULT
switch between modes is seamless as many times as required, and playback and
input work as needed regardless of how many switches happened.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux Asahi Remix 41
KDE Plasma Version: 6.3.3
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.5-400.asahi.fc41.aarch64+16k (64-bit)
Graphics Platform: Wayland
Product Name: Apple MacBook Pro (14-inch, M1 Pro, 2021)
ADDITIONAL INFORMATION
un- and re-pairing the headset resulted in the same behaviour. headset model is
WH-1000XM4.
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