Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have been following some instructions on how to get the wireless card working on my early 2011 MBP running Ubuntu 11.10. These can be found here.

I get to the following steps:

Extract the firmware:

$ tar xf ../broadcom-wl-5.100.138.tar.bz2

$ export FIRMWARE_INSTALL_DIR="/lib/firmware"

$ sudo ./b43-fwcutter -w "$FIRMWARE_INSTALL_DIR" broadcom-wl-5.100.138/linux/wl_apsta.o

$ cd ..

and the following error is produced in terminal:

sudo ./b43-fwcutter -w ¨$FIRMWARE_INSTALL_DIR¨ broadcom-wl-5.100.138/linux/wl_apsta.o

This file is recognised as:

filename : wl_apsta.o

version : 666.2

MD5 : *****************

Extracting b43/lp0initvals14.fw

failed to create output directory: No such file or directory

What am I missing? Any help would be appreciated as I would like to be able to make my laptop a portable machine running Ubuntu. Currently, it is a desktop laptop machine...

share|improve this question

Try to create the directory /lib/firmware first (at least I guess that's why it fails; I might be wrong):

sudo mkdir -p /lib/firmware
share|improve this answer

I can confirm that the Broadcom Corp. drivers work for a Macbook Pro 5,2 model under 12.10. I had to wrestle with the drivers in 12.04, but under 12.10 (with the kernel updates and all) I simply had to install them from Software Sources -> Additional Drivers.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

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