BR8041 USB Bluetooth dongle does not work with LL 5.0

[WytWun]

Code:

Bus 003 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

The device you have has many known issues arising from the fact that it almost certainly doesn't have a genuine CSR radio - this device is widely faked with greater or lesser success (search "linux usb 0a12:0001" for more detail)

Some fixes have been applied to the Linux kernel starting at v5.8.2 which try and work around many of the issues in the various fakes - upgrading your kernel to a version later than this may help (source of this info: comments to https://gist.github.com/nevack/6b36b82d7...9124840a07).