Hello Mario
Thanks – I hadn’t seen the adapter in the shop but I have now.
I can confirm that the bluetooth restart as defined in the thread that I linked to does work for my version/revision of the pi (Raspberry Pi 3 Model B Plus Rev 1.3).
sudo killall hciattach
sleep 2
/opt/vc/bin/vcmailbox 0x38041 8 8 129 0
sleep 1
/opt/vc/bin/vcmailbox 0x38041 8 8 129 1
sleep 4
sudo btuart
Other methods for resetting did not work. It was necessary to insert sleep periods for all the commands to have time to complete.
The failures appear like this in dmesg
Bluetooth: hci0: hardware error 0x00
Bluetooth: hci0: command 0x1003 tx timeout
Bluetooth: hci0: command 0x1001 tx timeout
I thought that one of the recommended wifi dongles would work but your comments cause me some concern. I have found another small adapter with the same Ralink chipset as the one that works so that might be an option. I seem to be building a collection of useless adapters!
