Keeps telling me to "Make sure your bluetooth device is powered up with 'hciconfig hciX up'"

[VoreckLukas]

So I ran sudo hciconfig hciX up after the error. ANd I espected it to work since I've never had problems after that before. But today when I did that and ran ds4drv again I get the same error again

❯ ds4drv
[info][controller 1] Created devices /dev/input/js0 (joystick) /dev/input/event260 (evdev)
[info][bluetooth] Scanning for devices
[error][bluetooth] Error while scanning for devices: 'hcitool scan' returned error. Make sure your bluetooth device is powered up with 'hciconfig hciX up'.

When I run hcitool scan manually I get

❯ hcitool scan
Scanning ...
Inquiry failed: Device or resource busy

I have no knowledge about bluetooth on linux as ds4drv is literally the only time I use bluetooth

[Bscout2011]

Running sudo apt install pi-bluetooth then sudo reboot resolved this issue for me.

[git-developer]

If you're lucky, re-plugging your bluetooth dongle or rebooting solves this problem. Otherwise, this could be a a duplicate of #123