Bluetooth not working in Ubuntu 18.4?

Question

linux

The problem with connecting bluetooth devices (headphones) he sees them but does not connect to them. Ubuntu 18.4 system
The /etc/bluetooth/main.conf config is already set to AutoEnable=true does not help
Here is the output of the command

sudo dmesg | grep -i bluetooth

[    4.801372] Bluetooth: Core ver 2.22
[    4.801385] Bluetooth: HCI device and connection manager initialized
[    4.801387] Bluetooth: HCI socket layer initialized
[    4.801389] Bluetooth: L2CAP socket layer initialized
[    4.801393] Bluetooth: SCO socket layer initialized
[    5.006826] Bluetooth: hci0: BCM: chip id 63
[    5.007827] Bluetooth: hci0: BCM: features 0x07
[    5.023819] Bluetooth: hci0: kacub18pc
[    5.027820] Bluetooth: hci0: BCM20702A1 (001.002.014) build 0000
[    5.028111] bluetooth hci0: Direct firmware load for brcm/BCM20702A1-13d3-3411.hcd failed with error -2
[    5.028113] Bluetooth: hci0: BCM: Patch brcm/BCM20702A1-13d3-3411.hcd not found
[    6.141323] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    6.141324] Bluetooth: BNEP filters: protocol multicast
[    6.141327] Bluetooth: BNEP socket layer initialized
[   24.919838] Bluetooth: RFCOMM TTY layer initialized
[   24.919844] Bluetooth: RFCOMM socket layer initialized
[   24.919848] Bluetooth: RFCOMM ver 1.11
[   45.283908] Bluetooth: hci0: last event is not cmd complete (0x0f)
[   67.299970] Bluetooth: hci0: last event is not cmd complete (0x0f)

Answer 1

try