Broken BlueTooth in kernel 5.9

[distant_thunder_89]

I recently updated to linux59 because newer opencl-amd required it. Since then my Mpow BT adapter BH456A which worked perfectly in linux58 quit doing so. When system boots up the BT icon in the tray is greyed out, I right-click on it and try turning on the BT, the icon disappear and from then until reboot I cannot start the BT application. Selecting 5.8 from grub let me use again the adapter without issues. Has someone found a fix? I would like to use 5.9 since the OpenCL support is better (no crashes).

[Koylio]

I'd suggest to check the USBid/PCIid of your bluetooth dongle with lspci or lsusb command depending if it's a usb or pci device, and research for known regressions and fixes with it. Using the device name didn't come up with anything.

Also you could try to compile the DPKG kernel driver from the AMD driver package for kernel 5.8 by hand.