Bluetooth/Wi-Fi Troubleshooting: Ubuntu 20.04 LTS, Intel AX200

Solution 1:

Sorry this is not an answer on how to debug bluetooth, but I cannot post comments yet, so I'm giving you these information here.

Intel AX200 is having major problems with linux (for instance, i have the same card and sometimes, on boot, the card stops working and it won't come back to life unless I temporarily disable the battery of my laptop directly from the BIOS)^[1].

According to the answer of this post, what you see on the additional drivers is not actually a real problem.

Nonetheless, if you search for errors with dmsg or with journalctl you will find errors of this kind:

[   44.601884] iwlwifi 0000:52:00.0: Direct firmware load for iwlwifi-cc-a0-49.ucode failed with error -2

If you check this thread, this seems to be a kernel problem, which is trying to load the wrong driver. Recent versions of the kernel (5.5+) seem to solve it, but ubuntu 20.04 is still on kernel version 5.4 and I bet it will not change until the next kernel LTS version (2021?).

I don't think this answers your question, but I really hope it does help you.

[1] You could call it "forced electronic reset", unplugging and re-plugging the wifi card itself works the same, but I have no idea on why I need to do it.