*** This bug is a duplicate of bug 1871794 ***
https://bugs.launchpad.net/bugs/1871794
As workaround a mix between Oliver's solution and this in the duplicated
thread
(https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1871794/comments/25)
worked for me on Ubuntu 20.04 / kernel 5.4.0-42-generic / MSI Prestige
14
I removed from my system /lib/firmware/intel/ibt* and copied
/lib/firmware/intel/ibt* inside linux-firmware_1.183.2_all.deb
(http://archive.ubuntu.com/ubuntu/pool/main/l/linux-firmware/linux-
firmware_1.183.2_all.deb)
Didn't have to make any changes to /etc/pulse/default.pa but reverted
the audio configuration to default by removing ~/.config/pulse
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https://bugs.launchpad.net/bugs/1878194
Title:
[Sennheiser HD 4.50 BTNC] Bluetooth headset not working when selecting
HSP/HFP audio profile in Focal Fossa
Status in bluez package in Ubuntu:
Confirmed
Status in pulseaudio package in Ubuntu:
Confirmed
Bug description:
After updating the release from Ubuntu 19.10 to 20.04, the bluetooth
headset doesn't work anymore when HSP/HFP profile is selected.
With Ubuntu 19.10 the headset was working, there was audio and the mic
was perfect for video conferencing.
[Steps to reproduce]
1. Connect headset (used blueman to setup and connect)
1.1. When connected the system automatically selects A2DP profile
2. Start playing audio (browser or other)
3. Change profile to HSP/HFP with pavucontrol (or blueman)
4. The audio disappears and microphone is not working (no input)
5. Optionally switch back to A2DP and the audio comes back
[Expected]
When switching to HSP/HFP the audio should keep playing and the microphone
should start working
[Notes]
I tried with pavucontrol to switch between profiles while playing audio from
a browser.
As side note there's a led in the headset that still blinks when switching
profile.
I tried deleting the pulse folder under user's profile .config without
success, also reinstalled packages and did a `sudo alsa force-reload`
and rebooting several times.
Note: not sure this is a duplicate of [Bug #1576559], it looks quite
different since the profile changes but the headset stops working.
[System info]
Ubuntu: 20.04 - Linux 5.4.0-29-generic x86_64
pulseaudio: 1:13.99.1-1ubuntu3
bluez: 5.53-0ubuntu3
Headset: Sennheiser HD 4.50 BTNC
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