Starting from Ubuntu 22.04, Firefox .deb package has been removed and by default apt will install Firefox .snap version instead.
Ubuntu users started facing problems with Firefox Snap when they are trying to install GNOME extensions. This 'bug' going to get fixed by Mozilla at some point later.
Personal Package Archive (PPA) is one way to install Firefox .deb version, where the package source will be taken from the developer's own repository.
$ sudo snap remove firefox [sudo] password for user: firefox removed
$ sudo add-apt-repository --yes ppa:mozillateam/ppa PPA publishes dbgsym, you may need to include 'main/debug' component Repository: 'deb https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu/ jammy main' Description: Mozilla Team's Firefox stable + 102 ESR and Thunderbird 102 stable builds Support for Ubuntu 16.04 ESM is included. More info: https://launchpad.net/~mozillateam/+archive/ubuntu/ppa Adding repository. Adding deb entry to /etc/apt/sources.list.d/mozillateam-ubuntu-ppa-jammy.list Adding disabled deb-src entry to /etc/apt/sources.list.d/mozillateam-ubuntu-ppa-jammy.list Adding key to /etc/apt/trusted.gpg.d/mozillateam-ubuntu-ppa.gpg with fingerprint 0AB215679C571D1C8325275B9BDB3D89CE49EC21 ##### snipped
$ echo 'Package: firefox* Pin: release o=LP-PPA-mozillateam Pin-Priority: 501' | sudo tee -a /etc/apt/preferences.d/mozillateamppa
Higher Pin-Priority value needs to be given to this PPA to avoid apt installing Firefox from Snap packages.
$ sudo apt update
$ sudo apt install --assume-yes firefox Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: xul-ext-ubufox Suggested packages: fonts-lyx The following NEW packages will be installed: firefox xul-ext-ubufox 0 upgraded, 2 newly installed, 0 to remove and 4 not upgraded. Need to get 58.6 MB of archives. After this operation, 209 MB of additional disk space will be used.
$ which firefox /usr/bin/firefox
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