Ubuntu 26.04 LTS has removed the “Additional Drivers” software. Updating 25.10 sometimes caused problems with the NVIDIA drivers (switching to nouveau or deleting the drivers outright). And using “Additional Drivers” was a very easy way to reinstall or switch drivers so it’s sad to see it go.

What should you use instead then?

ubuntu-drivers

Is the CLI tool that, according to this user, has been the intended way to install drivers for a bit now.

Simply running:

sudo ubuntu-drivers install

Will install the recommended drivers for your system.