Edimax EW-7811Un working in Ubuntu 10.04 32-bit and 64-bit

Results have been mixed in Ubuntu/Linux with the Edimax EW-7811Un wireless adapter in the past year, some saying it works great, some saying it works on 32-bit only, others can't get it to work at all. I decided to buy a couple and see if I could get them working.

First off, I did NOT use the drivers that came on the CD (v2.0.939.20100726) which are the same ones listed currently on the Edimax website, apparently dated 2010/7/26 based on the version tag.

I used the latest RTL8192CU Linux drivers from Realtek.

Possible prerequisite: Some have suggested installing the build-essential package in Ubuntu... I already had this installed so I don't know if it's necessary: In a terminal window do:
sudo apt-get install build-essential
1. Download RTL8192CU Linux drivers from Realtek website.

2. Right-click the archive and select Extract Here.

3. Open a Terminal window (Applications > Accessories > Terminal)

4. Assuming the file was downloaded to your Downloads folder, type:
cd Downloads/RTL (then press Tab and it will auto-complete the folder name)
5. Run the install script:
sudo sh install.sh
6. Enter your password.

7. Select the RTL8192cu option when it asks. Update Dec 2012: Newer driver packages don't prompt for this.

That's it!

Getting Broadcom wireless drivers working in Ubuntu 11.04

Installing the default Broadcom driver didn't work. (System > Administration > Additional Drivers)

Solution found here:
http://askubuntu.com/questions/38327/broadcom-bcm4311-wireless-not-working

• Open Synaptic Package Manager and uninstall bcm-kernel-source

• Install b43-fwcutter

• Then install firmware-b43-installer (this one didn't show up for me until b43-fwcutter had been installed)

In Terminal do:
cat /etc/modprobe.d/* | egrep '8180|acx|at76|ath|b43|bcm|CX|eth|ipw|irmware|isl|lbtf|orinoco|ndiswrapper|NPE|p54|prism|rtl|rt2|rt3|rt6|rt7|witch|wl'
See if the term blacklist bcm43xx is there. If it is, it needs to be commented out.

Edit the file:
sudo gedit /etc/modprobe.d/blacklist.conf
Put a # in front of the line: blacklist bcm43xx:
# blacklist bcm43xx

• Save the file

• Reboot