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I have a [Dell Inspiron][1] 15R 5520 laptop. Bluetooth is not working at all.

rfkill list all gives

0: hci0: Bluetooth

    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

dmesg|grep -i bluetooth gives

[   13.644428] Bluetooth: Core ver 2.16
[   13.644445] Bluetooth: HCI device and connection manager initialized
[   13.644453] Bluetooth: HCI socket layer initialized
[   13.644455] Bluetooth: L2CAP socket layer initialized
[   13.644461] Bluetooth: SCO socket layer initialized
[   15.861363] Bluetooth: hci0 command 0x1003 tx timeout
[   15.903443] Bluetooth: can't load firmware, may not work correctly
[   17.332535] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   17.332538] Bluetooth: BNEP filters: protocol multicast
[   17.332544] Bluetooth: BNEP socket layer initialized
[   17.393768] Bluetooth: RFCOMM TTY layer initialized
[   17.393781] Bluetooth: RFCOMM socket layer initialized
[   17.393783] Bluetooth: RFCOMM ver 1.11

hciconfig gives

hci0:   Type: BR/EDR  Bus: USB
    BD Address: E0:06:E6:D5:DB:46  ACL MTU: 1021:8  SCO MTU: 64:1
    UP RUNNING PSCAN ISCAN 
    RX bytes:687 acl:0 sco:0 events:56 errors:0
    TX bytes:2024 acl:0 sco:0 commands:52 errors:0

I have visited the site http://wireless.kernel.org/en/users/Drivers/b43 and according to it

lspci -vnn -d 14e4: gives

08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365]
 (rev 01)
    Subsystem: Dell Wireless 1704 802.11n + BT 4.0 [1028:0016]
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Memory at c1500000 (64-bit, non-prefetchable) [size=32K]
    Capabilities: <access denied>    
    Kernel driver in use: wl

So I got my PCI-ID as 14e4:4365 which it says is not supported. The alternative is wl.

What should I do?

My Wi-Fi is working normally without any problems, but Bluetooth is not working.

sudo dpkg -i wireless-bcm43142-dkms_6.20.55.19-1_amd64.deb gives following error 
(Reading database ... 208543 files and directories currently installed.)
Unpacking wireless-bcm43142-dkms (from wireless-bcm43142-dkms_6.20.55.19-1_amd64.deb) ...
Setting up wireless-bcm43142-dkms (6.20.55.19-1) ...
Loading new wireless-bcm43142-6.20.55.19 DKMS files...
Building only for 3.8.0-23-generic
Building initial module for 3.8.0-23-generic
Traceback (most recent call last):
  File "/usr/share/apport/package-hooks/dkms_packages.py", line 22, in <module>
    import apport
ImportError: No module named apport
Error! Bad return status for module build on kernel: 3.8.0-23-generic (x86_64)
Consult /var/lib/dkms/wireless-bcm43142/6.20.55.19/build/make.log for more information.
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2 Answers

For a 64-bit Ubuntu installation, you can[1]:

Even more answers are in the Ask Ubuntu question Lost WiFi after 12.10 upgrade.

1. From the official Ubuntu forum, Broadcom BCM43142 Driver Ubuntu 12.10 64 Bit.

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i did the three steps above and they worked without any problem but still bluetooth is not working –  chanzerre Jun 3 '13 at 19:35
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Could it be that your laptop's bluetooth device is attached to USB, not PCI bus? Try lsusb and see if it comes up. E.g. (on my machine):

$ lsusb
...
Bus 001 Device 005: ID 0a5c:21e6 Broadcom Corp. BCM20702 Bluetooth 4.0 [ThinkPad]
...

You should also update BIOS first, if you have any hardware detection problems.

This will probably come as off-topic here, but I'll briefly describe how I managed to update BIOS on a Dell laptop:

  • download FreeDOS pre-built ISO image and use it to make a bootable USB drive;
  • download BIOS update from Dell support site, make sure you get the version that will run under DOS
  • boot into FreeDOS and run the BIOS update.
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