Dear all with this adapter: please try again with CE-19 nightly!
There is a fix included:
Implemented RTL8821A revision C Bluetooth device
The log shows clear the last nightly wasn’t used and it can not work:
[ 83.563106@5] usbcore: registered new interface driver btusb
[ 83.574527@3] Bluetooth: hci0: rtl: examining hci_ver=08 hci_rev=000c lmp_ver=08 lmp_subver=8821
[ 83.574533@3] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821a_config.bin
[ 83.574656@3] bluetooth hci0: Direct firmware load for rtl_bt/rtl8821a_config.bin failed with error -2
[ 83.574659@3] Bluetooth: hci0: Failed to load rtl_bt/rtl8821a_config.bin
[ 83.574661@3] Bluetooth: hci0: rtl: loading rtl_bt/rtl8821a_fw.bin
[ 83.657409@3] Bluetooth: hci0: rom_version status=0 version=1
[ 83.657427@3] Bluetooth: cfg_sz 0, total size 17428
[ 84.048680@1] usbcore: registered new interface driver rtl8821cu
So again for the users:
Before report issues, try fresh/clean install. Try last nightly if it is already fixed. If still not working please post logs: