Come on - Bluetooth headsets are unusable with the mic on due to HFP being the only bluetooth profile most Linux distros support.

Nope. I run Pop OS and I get A2DP on all my Bluetooth headsets. I'm running a cheapish Clevo laptop.

A2DP doesn't work simultaneously with HFP (i.e. "with the (bluetooth) mic on"). That's not Linux limitation, that's Bluetooth limitation and other OSes - Android, MacOS, iOS, Windows - behave exactly the same.

One solution is getting a wired mic.

What i meant is that most distros use HFP instead of HSP.

Thanks, I'll try PopOS out - hopefully I can finally use the integrated mic on my BT headset.

A2DP works OOB with my Ubuntu 20.10 with Sony WH-1000XM3.

A2DP is an output only profile. For mics you need HFP or HSP but Ubuntu seems to only use HFP (the shitty one).

Try sharing only a single display of your multi monitor setup on X11. Try sharing a screen at all on Wayland ;)

E: Realised "sharing" would be ambiguous - I mean screen sharing on video calls, etc.

Sharing single displays or specific windows on Wayland is easy - Chrome and Firefox, or app like OBS can do it; if your conference app cannot do it, ask the vendor why.

Here's an anecdote: sharing a single X11 display on my two-display setup works just fine with Microsoft Teams, I use it almost daily.

That Linux MS Teams client can only do read-only sharing (no giving control to remote party) is another matter, which bothers me a lot.