I recently upgrade to Ubuntu Mate (pronounced “matt – ay”) 17.10, and so far, things have been going swimmingly well. Except for Firefox…
No matter what I did, I could not get Firefox to retain my selection for my start page.
After repeated attempts, tweaks, curses, etc., I finally found the answer here:
sudo vi /usr/lib/firefox/ubuntumate.cfg
Look for this line:
Change “https://start.ubuntu-mate.org/” to whatever you want your start page to be, and restart Firefox.
Voila! Nuisance fixed!