When you have more than one web browser installed on your xubuntu, you can choose which one will act as default web browser. You can do this from command line, there is a dedicated command on xubuntu for choosing default web browser.
To choose which web browser that will become the default, you can run this simple command on the terminal:
sudo update-alternatives --config x-www-browserThe command above will show all web browser on your xubuntu, so that you can pick one that will become the default web browser. Here's sample output on my computer:
There are 4 choices for the alternative x-www-browser (providing /usr/bin/x-www-browser).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/google-chrome-stable 200 auto mode
1 /usr/bin/firefox 40 manual mode
2 /usr/bin/google-chrome-stable 200 manual mode
3 /usr/bin/qupzilla 80 manual mode
4 /usr/bin/xombrero 50 manual mode
Press to keep the current choice[*], or type selection number:
Based on sample output above, i could enter number between 0-4 to choose which browser that will be set as default. For example if i type 1 and hit enter, firefox will become the default web browser. Your case might be different, but you get the idea right?
