Trying to run Ubuntu 22.04 on a computer that has an Nvidia graphics card and is using the built-in open source Nouveau graphics driver can cause Firefox to be unable to open, however you can still browse the web by installing Chromium web browser with sudo snap install chromium
.
The AMD Phenom II CPU does not have integrated graphics, so it needs a separate graphics card which in turn requires a graphics driver if your graphics card is an NVIDIA model. If so, open the terminal and run the following commands to automatically install the proprietary Nvidia graphics driver packages which are suitable for your graphics card. These commands will also automatically switch your display server protocol from the default Wayland to X11/Xorg.
sudo apt update
sudo ubuntu-drivers install
sudo reboot
The install
option of ubuntu-drivers
installs drivers that are appropriate for automatic installation including their dependencies.