4

I have an issue on a Dell Vostro 3560 with a BCM43142 where the Bluetooth doesn't work even with the proprietary drivers installed. The WiFi works just fine. I'm running a fresh installation of Ubuntu 14.10. The only time it worked was when I had Dell preinstalled Ubuntu 12.04.

dmesg | grep Bluetooth gives [ 4967.683179] Bluetooth: hci0: BCM: patch brcm/BCM43142A0-0a5c-21d7.hcd not found

I don't have a Windows installation I can get files from

From lsusb Bus 002 Device 005: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0

apt-get shows bcmwl-kernel-source is already the newest version.

This should have fixed my problem but it did not https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1065400 Why?

Any solution?

3

I had the same issue. I read some answers and this is the gist of it:

  1. Find ID of your device:

$ lsusb | grep Bluetooth

My output for example:

Bus 001 Device 003: ID 0a5c:21d7 Broadcom Corp. BCM43142 Bluetooth 4.0

from which 0a5c:21d7 should be remembered.

  1. Get a hex file for your device:
    After searching for bluetooth drivers in Google I have chosen this download: http://drivers.softpedia.com/get/BLUETOOTH/Broadcom/Broadcom-43142-Bluetooth-40-Adapter-Driver-12007030-for-Windows-8.shtml#download

  2. How to get the right hex file.

So I have the id of the chip: 0a5c:21d7 and a bunch of the hex files from the downloaded archive. How can I get the right one for me? The trick is to investigate the .inf file that instructs windows what to install. Searching for 21D7 (note the capital D instead of 'd') I get this:

%Dell1704.DeviceDesc%=RAMUSB21D7, USB\VID_0A5C&PID_21D7 ; BRCM Generic 43142A0 RAMUSB

The USB/VID&PID is what I get on lsusb: capital(0a5c:21d7). The RAMUSB21D7 is what I need to search next in the inf file (it is the device's description).

And this is my result:

;;;;;;;;;;;;;RAMUSB21D7;;;;;;;;;;;;;;;;;

[RAMUSB21D7.CopyList]
bcbtums.sys
btwampfl.sys
BCM43142A0_001.001.011.0122.0126.hex

And the hex file I shall use is BCM43142A0_001.001.011.0122.0126.hex Extract this into home directory.

  1. Type this:

dmesg | grep Bluetooth

Result according to your issue is:

[ 4967.683179] Bluetooth: hci0: BCM: patch brcm/BCM43142A0-0a5c-21d7.hcd not found

It will tell the name and file its looking for. I your case it is:brcm/BCM43142A0-0a5c-21d7.hcd

  1. Convert the correct hex to hcd file. Open terminal and type these commands:

sudo apt-get install git

git clone git://github.com/jessesung/hex2hcd.git

cd hex2hcd

make

./hex2hcd ../BCMxxxx.xxx.xxx.xx.hex BCM43142A0-0a5c-21d7.hcd (Correct hex file and required hcd name here)

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

|improve this answer|||||

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.