wpa-roaming
This project contains a patch file that can be applied to the source code of wpa_supplicant on Ubuntu machines to make its roaming behaviour less sensitive. A more thorough discussion of this patch is available in my German-language Linux blog.
Usage
To include this patch into wpa_supplicant, follow the below instructions.
Prepare
Download the wpa_supplicant source code via sudo apt-get source wpasupplicant, then apply the patch.
Compile
First, satisfy the build dependencies by running sudo apt-get build-dep wpasupplicant . Then, copy the configuration file that is in wpa_2.4-0ubuntu9.debian.tar.xz/debian/config/wpasupplicant/linux to the root directory of the source code, renaming it to .config. Then, compile wpa_supplicant using make.
Deploy
Move the modified wpa_supplicant executable into the right location on your machine (which should be /sbin). Before you can do that, you must stop the network-manager via sudo service network-manager stop and kill wpa_supplicant via sudo pkill -9 wpa_supplicant$. Afterwards, start the network-manager again via sudo service network-manager start.