dmesg | grep -i blue
saída:
[ 15.530593] Bluetooth: Core ver 2.21
[ 15.530613] Bluetooth: HCI device and connection manager initialized
[ 15.530618] Bluetooth: HCI socket layer initialized
[ 15.530621] Bluetooth: L2CAP socket layer initialized
[ 15.530629] Bluetooth: SCO socket layer initialized
[ 16.158884] Bluetooth: hci0: BCM: chip id 70
[ 16.174872] Bluetooth: hci0: BCM43142A
[ 16.174876] Bluetooth: hci0: BCM (001.001.011) build 0000
[ 16.656647] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[ 16.656653] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[ 18.659794] Bluetooth: hci0 command 0x1003 tx timeout
[ 35.794876] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 35.794880] Bluetooth: BNEP filters: protocol multicast
[ 35.794886] Bluetooth: BNEP socket layer initialized
[ 47.741664] Bluetooth: RFCOMM TTY layer initialized
[ 47.741675] Bluetooth: RFCOMM socket layer initialized
[ 47.741682] Bluetooth: RFCOMM ver 1.11
[ 4054.800646] Bluetooth: hci0: BCM: chip id 70
[ 4054.816637] Bluetooth: hci0: BCM43142A
[ 4054.816646] Bluetooth: hci0: BCM (001.001.011) build 0000
[ 4054.816673] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[ 4054.816677] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[ 4056.822441] Bluetooth: hci0 command 0x1003 tx timeout
vinodbmaniyat@vinodbmaniyat-Vostro-2520:~$