I have a Dell Latitude D610 and whenever I try to connect to wifi, it says missing firmware. When I open my additional drives icon, nothing is there. I have rebooted many times. What should I do to solve this problem?
3 Answers
Try install the linux-firmware-nonfree 
package. Use your favourite package manager, or use the terminal with the following command:
sudo apt-get install linux-firmware-nonfree The package includes some firmware, such as Broadcom wireless card firmware binaries. You can see the list here: Launchpad page about the linux-firmware-nonfree package.
1first enable non-free debian packages by editing /etc/apt/sources.list and adding contrib and non-free to the line
deb stable main so it becomes
deb stable main contrib non-free and also add these lines:
deb squeeze main contrib non-free deb-src squeeze main contrib non-free now run
apt-get update then you can look at firmware packages you might want by typing
apt-file --package-only search /lib/firmware/ and finally run
apt-get install firmware-linux-nonfree and any other packages you think you need
In case you don't have an internet connection on the machine you're working on, which might happen with this kind of problem, you can download the firmware package with another machine, transfer to the machine without connection and install it using the Ubuntu software center (right click on the deb file and select application).
