$ dmesg | grep -i error
[ 20.229516] bluetooth hci0: Direct firmware load for brcm/BCM43142A0-0a5c-216d.hcd failed with error -2
[ 1242.727869] bluetooth hci0: Direct firmware load for brcm/BCM43142A0-0a5c-216d.hcd failed with error -2
[ 5759.316789] bluetooth hci0: Direct firmware load for brcm/BCM43142A0-0a5c-216d.hcd failed with error -2
Kubuntu 20.04 LTS
HP ProBook 455 G3
$ dmesg | grep -i error -0a5c-216d. hcd failed with error -2 -0a5c-216d. hcd failed with error -2 -0a5c-216d. hcd failed with error -2
[ 20.229516] bluetooth hci0: Direct firmware load for brcm/BCM43142A0
[ 1242.727869] bluetooth hci0: Direct firmware load for brcm/BCM43142A0
[ 5759.316789] bluetooth hci0: Direct firmware load for brcm/BCM43142A0