Após a última atualização, o Kubuntu 18.04 não pode se conectar a dispositivos bluetooth como o teclado sem fio da apple.
Eu tenho um laptop SONY VAIO e antes da atualização eu não tive nenhum problema.
Minhas mensagens Bluetooth em dmesg são:
dmesg | grep -i bluetooth
[ 6.772658] usb 1-1.6: Product: Broadcom Bluetooth Device
[ 11.751155] Bluetooth: Core ver 2.22
[ 11.751191] Bluetooth: HCI device and connection manager initialized
[ 11.751197] Bluetooth: HCI socket layer initialized
[ 11.751200] Bluetooth: L2CAP socket layer initialized
[ 11.751208] Bluetooth: SCO socket layer initialized
[ 11.973371] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.973374] Bluetooth: BNEP filters: protocol multicast
[ 11.973379] Bluetooth: BNEP socket layer initialized
[ 23.071294] Bluetooth: RFCOMM TTY layer initialized
[ 23.071303] Bluetooth: RFCOMM socket layer initialized
[ 23.071310] Bluetooth: RFCOMM ver 1.11
[ 589.188189] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 601.144907] Bluetooth: hci0: ACL packet for unknown connection handle 16
[ 640.203246] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 820.185258] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 836.189258] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 852.189329] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 868.189310] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 892.049288] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 908.188219] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 924.184322] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 940.188226] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 956.188278] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 972.188342] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 988.183289] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1004.187294] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1020.187278] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1036.183317] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1052.183356] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1068.187371] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1084.191272] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1100.187064] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1116.187333] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1132.191369] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1148.182341] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1164.186323] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1180.186272] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1196.185849] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1212.190352] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1228.182365] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1244.194338] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1260.189334] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1276.181344] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1292.185364] Bluetooth: hci0: last event is not cmd complete (0x0f)