03-06-2017, 08:16 PM
This is a suggestion that might work for you. I use Pale Moon as my default browser & this worked for me. In Linux Lite, Firefox is the default browser. Go to Synaptic & search for Firefox. Right click & select to completely remove (1) Firefox, (2) the English language plugin, & (3) the Ubuntu Firefox plugin. You'll notice if you scroll down the list there are 3 boxes filled in for Firefox. After you uninstall restart your machine, go to lite tweaks & make sure Vivaldi is listed as your default browser. The good thing is if doesn't work for you, and you actually like Firefox, you can always reinstall it in Synaptic. Everytime I do a fresh install of Linux Lite, getting rid of Firefox is one of the first things I do. I find it slow, resource heavy, and almost impossible to get rid of all the built-in bloatware it comes with. (boy I'm not prejudice about Firefox, am I? - - - Yes, yes I am. I can't stand it)