I've tried all the fixes folks have put forth in this thread and a few others. BT at a BIOS level is broken on what appears to be several MSI boards.
I was down to two issues.
1. BT pairs but doesn't work as far as audio or file transfers.
2. Having 2 Crucial Gen5 T700 NVMe drives in the Gen5 slots causes the 2nd drive to drop to Gen2 speeds and eventually start going read only after about a 24hrs, multiples of the same NVMe tried and the behavior is the same. The 2 drives used both work fine in the Gen4 slots.
My specs are ...
Hardware:
MAG Carbon X870E
AMD 9950X
Sapphire Nitro+ 7900XTX
2x32 G.Skill 6k RAM
1600W Seasonic Platinum PSU
Software:
EndeavorOS (Arch based) Linux distro.
I'm coming from an ASRock X570 with a 3950X. I decided to try MSI and get the MAG Carbon. I'm honestly thinking I may have made a mistake. The board isn't defective, but the BIOS is broken.
I've tried to get this working with the BIOS it came with 1A10 and with the last 3 betas, one of which was 1A18 which a forum mod posted. No success.
Linux sees every device, including the BT. It can pair with my Bose 700s but receives no audio.
I've read pages of complaints that had one other Linux user and the rest of use Windows users. It's not a Linux thing.
So it's past the return date. Because it's not defective, no return or RMA is possible. I just have to wait it out.
Edit: If I REALLY want BT and MSI can't get their s**t together ... I'll just spend $30 and get an Intel AX210 which I know works. And I'll replace it. I still think MSI needs to step up, there are toooo many threads like this with voodoo fixed that don't stick. Ah well. Cheers.