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This is a Canonical question that will be signpost to solve Bluetooth issues. Please, whenever any of this answers does not fix your issue, provide the same information as this question in another question and add a link to this one. You should also provide what were the results/changes of each of the solutions.

For about two days now, my bluetooth has not been functional. The bluetooth icon is not present on the top panel. The bluetooth window is completely frozen as can be seen in this picture:

Bluetooth Window

The output for bluetoothd -d -n is:

bluetoothd[3390]: Bluetooth daemon 4.98
bluetoothd[3390]: src/main.c:parse_config() parsing main.conf
bluetoothd[3390]: src/main.c:parse_config() discovto=0
bluetoothd[3390]: src/main.c:parse_config() pairto=0
bluetoothd[3390]: src/main.c:parse_config() pageto=8192
bluetoothd[3390]: src/main.c:parse_config() auto_to=60
bluetoothd[3390]: src/main.c:parse_config() name=%h-%d
bluetoothd[3390]: src/main.c:parse_config() class=0x000100
bluetoothd[3390]: src/main.c:parse_config() discov_interval=30
bluetoothd[3390]: src/main.c:parse_config() Key file does not have key 'DeviceID'

The output for start bluetooth is:

start: Rejected send message, 1 matched rules; type="method_call", sender=":1.343" (uid=1000 pid=19042 comm="start bluetooth ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")

My Ubuntu version is 12.04. Any idea as to how this can be sorted?


Patebin link containing the contents of /var/log/dmesg: link


hcitool dev:

    hci0    74:E5:43:36:65:21

cat /etc/dbus-1/system.d/bluetooth.conf: paste bin link

ps aux| grep bluetooth:

root      1065  0.0  0.0   4740  2028 ?        Ss   15:33   0:00 /usr/sbin/bluetoothd
dorsatum  2392  0.0  0.2 142772 10956 ?        Sl   15:33   0:00 bluetooth-applet
root     20960  0.0  0.2  76268 10780 ?        Sl   22:08   0:00 bluetooth-applet
dorsatum 21203  0.0  0.0   4388   832 pts/0    S+   22:13   0:00 grep --color=auto bluetooth
share|improve this question
up vote 5 down vote accepted

You may want to try loading the btusb module before starting the daemon:

sudo modprobe btusb

To make it happen on reboots put this into /etc/modules:


The above fixed my case, which was: sudo service bluetooth start did not start the daemon and dmesg showed

[   72.468338] init: bluetooth main process (4028) terminated with status 1
[   72.468401] init: bluetooth respawning too fast, stopped

because /usr/sbin/bluetoothd -n -d failed with

bluetoothd[4054]: opening L2CAP socket: Address family not supported by protocol
share|improve this answer

Use sudo service bluetooth restart

I had similar outputs and found an answer in this thread. Everything is back to normal for me now.

share|improve this answer
thank you for your answer, but the bluetooth service, despite the restart is not working, the screen for the service is frozen as it was before and there is no bluetooth icon on the top panel. any ideas? – Projjol Jul 24 '13 at 5:10

From the dmesg output: It shows that your bluetooth is initialized and detected.
Are you using laptop with, some special keys for BLUETOOTH: eg: fn+f3 ??
If anything like that is present,

 make sure it is ON.

Sometimes this may be the case.

share|improve this answer
my laptop DOES have the fn+f3 combo for WiFi and bluetooth, and it is switched on, but somehow that doesn't change my bluetooth's erratic behavior. – Projjol Sep 12 '13 at 17:03
my Laptop has the same combo feature.... How to you know tht it is switched ON. Is there any indicator,which displays that?? – proton1h1 Sep 12 '13 at 18:54
yep, there's this orange led which signals that the bluetooth service is switched on. – Projjol Sep 13 '13 at 1:46
that orange LED is for both wifi and bluetooth i guess ...!!! See it has happened to me. – proton1h1 Sep 13 '13 at 3:36
indeed, it's for both the services! – Projjol Sep 13 '13 at 9:56

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