Bluetooth not discovering devices on Ubuntu 18.04 & Dell Inspiron 3542

Question

I am trying to pair my Bluetooth speaker with my laptop(model: Dell Inspiron 3542)

I am trying this from over a week now and used every solution found on the internet.

I even tried this solution but it is not working.

Whenever I am trying to search my Bluetooth speaker, it shows me as the following image.

I am supplying the output of some commands.

kp@devlin:~$ bluetoothctl
Agent registered
[bluetooth]# list
Controller AC:D1:B8:D2:1E:E6 ChromeLinux_31A3 [default]
[bluetooth]# devices
[bluetooth]# scan on
Discovery started
[CHG] Controller AC:D1:B8:D2:1E:E6 Discovering: yes
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# 

kp@devlin:~$ lspci -knn | grep Net -A3; lsusb
06:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n [14e4:4365] (rev 01)
    Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
    Kernel driver in use: wl
    Kernel modules: bcma, wl
Bus 001 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 004: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0
Bus 001 Device 003: ID 0c45:6a04 Microdia 
Bus 001 Device 002: ID 8087:8000 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

kp@devlin:~$ rfkill list
0: dell-rbtn: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: brcmwl-0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
7: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
kp@devlin:~$ dmesg | grep Blue
[   17.229294] Bluetooth: Core ver 2.22
[   17.229321] Bluetooth: HCI device and connection manager initialized
[   17.229326] Bluetooth: HCI socket layer initialized
[   17.229329] Bluetooth: L2CAP socket layer initialized
[   17.229337] Bluetooth: SCO socket layer initialized
[   17.350102] Bluetooth: hci0: BCM: chip id 70
[   17.351087] Bluetooth: hci0: BCM: features 0x06
[   17.367122] Bluetooth: hci0: BCM43142A
[   17.367125] Bluetooth: hci0: BCM (001.001.011) build 0000
[   17.437473] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   19.456037] Bluetooth: hci0: command 0x1003 tx timeout
[   21.631788] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   21.631790] Bluetooth: BNEP filters: protocol multicast
[   21.631794] Bluetooth: BNEP socket layer initialized
[   33.433294] Bluetooth: RFCOMM TTY layer initialized
[   33.433301] Bluetooth: RFCOMM socket layer initialized
[   33.433307] Bluetooth: RFCOMM ver 1.11
[ 1048.039364] Bluetooth: hci0: BCM: chip id 70
[ 1048.040359] Bluetooth: hci0: BCM: features 0x06
[ 1048.056394] Bluetooth: hci0: BCM43142A
[ 1048.056400] Bluetooth: hci0: BCM (001.001.011) build 0000
[ 1048.056434] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[ 1050.085335] Bluetooth: hci0: command 0x1003 tx timeout
[ 1377.020244] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1392.894086] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1761.969305] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1777.846113] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1793.978498] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1809.851781] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1825.981117] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1841.853740] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1857.982819] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1873.854417] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1889.980832] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1905.852787] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1921.978821] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1937.850544] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1953.976194] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1969.846715] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1985.973205] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2001.844633] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2017.972661] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2033.848892] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2049.979862] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2067.648838] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2083.779546] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2099.909565] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2115.782413] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2131.911866] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2147.785892] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2163.914707] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2179.786245] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2195.914849] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2211.787167] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2227.915229] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2243.788302] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2259.915199] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2275.787912] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2291.914610] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2307.786179] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2323.913500] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2339.785130] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2355.912519] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2371.784721] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2387.912105] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2403.783382] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2419.913572] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2435.781665] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2451.907940] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2467.779072] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2483.905092] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2499.777184] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2515.905372] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2531.778022] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 2547.907920] Bluetooth: hci0: last event is not cmd complete (0x0f)

kp@devlin:~$ sudo systemctl status bluetooth.service
● bluetooth.service - Bluetooth service
   Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset
   Active: active (running) since Sat 2019-04-27 11:13:25 IST; 20min ago
     Docs: man:bluetoothd(8)
 Main PID: 1023 (bluetoothd)
   Status: "Running"
    Tasks: 1 (limit: 4568)
   CGroup: /system.slice/bluetooth.service
           └─1023 /usr/lib/bluetooth/bluetoothd

Apr 27 11:13:25 devlin systemd[1]: Started Bluetooth service.
Apr 27 11:13:25 devlin bluetoothd[1023]: Starting SDP server
Apr 27 11:13:26 devlin bluetoothd[1023]: Bluetooth management interface 1.14 ini
Apr 27 11:13:29 devlin bluetoothd[1023]: Loading LTKs timed out for hci0
Apr 27 11:13:57 devlin bluetoothd[1023]: Endpoint registered: sender=:1.70 path=
Apr 27 11:13:57 devlin bluetoothd[1023]: Endpoint registered: sender=:1.70 path=
Apr 27 11:14:49 devlin bluetoothd[1023]: Endpoint unregistered: sender=:1.70 pat
Apr 27 11:14:49 devlin bluetoothd[1023]: Endpoint unregistered: sender=:1.70 pat
Apr 27 11:14:55 devlin bluetoothd[1023]: Endpoint registered: sender=:1.96 path=
Apr 27 11:14:55 devlin bluetoothd[1023]: Endpoint registered: sender=:1.96 path=

kp@devlin:~$ sudo systemctl is-enabled bluetooth.service
enabled
kp@devlin:~$ cat /etc/bluetooth/main.conf | grep -i -E 'DiscoverableTimeout|AutoEnable'
#DiscoverableTimeout = 0
# AutoEnable defines option to enable all controllers when they are found.
AutoEnable=true

kp@devlin:~$ dmesg | grep -i bluetooth
[   22.106360] Bluetooth: Core ver 2.22
[   22.106383] Bluetooth: HCI device and connection manager initialized
[   22.106387] Bluetooth: HCI socket layer initialized
[   22.106389] Bluetooth: L2CAP socket layer initialized
[   22.106395] Bluetooth: SCO socket layer initialized
[   23.214304] Bluetooth: hci0: BCM: chip id 70
[   23.215235] Bluetooth: hci0: BCM: features 0x06
[   23.231250] Bluetooth: hci0: BCM43142A
[   23.231256] Bluetooth: hci0: BCM (001.001.011) build 0000
[   23.292126] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[   23.292131] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   25.308057] Bluetooth: hci0: command 0x1003 tx timeout
[   32.169411] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   32.169415] Bluetooth: BNEP filters: protocol multicast
[   32.169423] Bluetooth: BNEP socket layer initialized
[   34.620101] Bluetooth: hci0: command 0x1003 tx timeout
[   63.106027] Bluetooth: RFCOMM TTY layer initialized
[   63.106034] Bluetooth: RFCOMM socket layer initialized
[   63.106041] Bluetooth: RFCOMM ver 1.11
kp@devlin:~$ rfkill
ID TYPE      DEVICE         SOFT      HARD
 0 wlan      dell-rbtn unblocked unblocked
 1 wlan      phy0      unblocked unblocked
 2 wlan      brcmwl-0  unblocked unblocked
 3 bluetooth hci0      unblocked unblocked
kp@devlin:~$ pulseaudio
E: [pulseaudio] pid.c: Daemon already running.
E: [pulseaudio] main.c: pa_pid_file_create() failed.

Edit:

after doing steps specified @ Bluetooth Broadcom 43142 isn't working

kp@devlin:~$ dmesg | grep -i blue
[   19.863558] Bluetooth: Core ver 2.22
[   19.863576] Bluetooth: HCI device and connection manager initialized
[   19.863580] Bluetooth: HCI socket layer initialized
[   19.863582] Bluetooth: L2CAP socket layer initialized
[   19.863588] Bluetooth: SCO socket layer initialized
[   19.990391] Bluetooth: hci0: BCM: chip id 70
[   19.991374] Bluetooth: hci0: BCM: features 0x06
[   20.007412] Bluetooth: hci0: BCM43142A
[   20.007417] Bluetooth: hci0: BCM (001.001.011) build 0000
[   20.063292] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[   20.063296] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   22.076034] Bluetooth: hci0: command 0x1003 tx timeout
[   26.992912] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   26.992915] Bluetooth: BNEP filters: protocol multicast
[   26.992921] Bluetooth: BNEP socket layer initialized
[   29.279488] Bluetooth: hci0: command 0x1003 tx timeout
[   36.330763] Bluetooth: RFCOMM TTY layer initialized
[   36.330775] Bluetooth: RFCOMM socket layer initialized
[   36.330785] Bluetooth: RFCOMM ver 1.11
[   92.542294] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  100.547223] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  116.676067] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  137.412157] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  153.538647] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  169.664917] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  185.534037] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  208.827103] Bluetooth: hci0: last event is not cmd complete (0x0f)
[  221.370067] Bluetooth: hci0: last event is not cmd complete (0x0f)

can anyone suggest what else can I do to resolve the issue?

Please edit your question and post output of the following commands: 1. sudo systemctl status bluetooth.service, 2. sudo systemctl is-enabled bluetooth.service 3. cat /etc/bluetooth/main.conf | grep -i -E 'DiscoverableTimeout|AutoEnable' 4. sudo lshw | grep -i -A6 "description: Bluetooth" 5. dmesg | grep -i bluetooth 6. rfkill and 7. pulseaudio. Thanks. — Marmayogi, Apr 22 '19 at 01:33
Possible duplicate of Bluetooth Broadcom 43142 isn't working You can get firmware from https://github.com/winterheart/broadcom-bt-firmware/blob/master/brcm/BCM43142A0-0a5c-21d7.hcd just copy it to /lib/firmware/brcm/BCM.hcd — Jeremy31, Apr 22 '19 at 10:30
@Marmayogi I have edited question as you asked. output of command sudo lshw | grep -i -A6 "description: Bluetooth" is vanishing while executing it, so cant post that. — devlin31, Apr 27 '19 at 06:29
@Jeremy31 downloaded hcd file at /lib/firmware/brcm/. & renamed it as BCM-0a5c-21d7.hcd. pc shutdown and restarted machine. issue is not getting resolved :( — devlin31, Apr 27 '19 at 07:20

score 1 · Answer 1 · answered Apr 27 '19 at 10:14

what I was looking was a firmware file for Broadcom Bluetooth.

with the help of @Jeremy31, I found that out using the following command.

kp@devlin:~$ dmesg | grep Blue
[   17.229294] Bluetooth: Core ver 2.22
[   17.229321] Bluetooth: HCI device and connection manager initialized
[   17.229326] Bluetooth: HCI socket layer initialized
[   17.229329] Bluetooth: L2CAP socket layer initialized
[   17.229337] Bluetooth: SCO socket layer initialized
[   17.350102] Bluetooth: hci0: BCM: chip id 70
[   17.351087] Bluetooth: hci0: BCM: features 0x06
[   17.367122] Bluetooth: hci0: BCM43142A
[   17.367125] Bluetooth: hci0: BCM (001.001.011) build 0000
[   17.437473] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   19.456037] Bluetooth: hci0: command 0x1003 tx timeout
[   21.631788] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   21.631790] Bluetooth: BNEP filters: protocol multicast
[   21.631794] Bluetooth: BNEP socket layer initialized
[   33.433294] Bluetooth: RFCOMM TTY layer initialized
[   33.433301] Bluetooth: RFCOMM socket layer initialized
[   33.433307] Bluetooth: RFCOMM ver 1.11
[ 1048.039364] Bluetooth: hci0: BCM: chip id 70
[ 1048.040359] Bluetooth: hci0: BCM: features 0x06
[ 1048.056394] Bluetooth: hci0: BCM43142A
[ 1048.056400] Bluetooth: hci0: BCM (001.001.011) build 0000
[ 1048.056434] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[ 1050.085335] Bluetooth: hci0: command 0x1003 tx timeout
[ 1377.020244] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1392.894086] Bluetooth: hci0: last event is not cmd complete (0x0f)
[ 1761.969305] Bluetooth: hci0: last event is not cmd complete (0x0f)

keep a note of .hcd file name which is required as shown in the above command output on line 10 & line 22.(which is BCM.hcd in this case)

we can make that file using steps shown here Bluetooth Broadcom 43142 isn't working

OR

you can download it using following commands one by one.

install git if have not yet

sudo apt-get install git

download .hcd file

git clone https://github.com/winterheart/broadcom-bt-firmware/blob/master/brcm/BCM43142A0-0a5c-21d7.hcd

copy .hcd file to /lib/firmware/brcm directory

cp BCM43142A0-0a5c-21d7.hcd /lib/firmware/brcm/.

rename .hcd file with the name which is required(as noted in the command output of the first step)

mv BCM43142A0-0a5c-21d7.hcd BCM.hcd

shutdown pc(not reboot) & start again

Bluetooth not discovering devices on Ubuntu 18.04 & Dell Inspiron 3542

1 Answers1