What's the reason Ubuntu didn't work? That's basically the setup I have with my dad. He's using Ubuntu on desktop, which I taught him to use. There wasn't much

What's the reason Ubuntu didn't work? That's basically the setup I have with my dad. He's using Ubuntu on desktop, which I taught him to use. There wasn't much to teach. He really just wants to use a browser. I taught him how to scan documents and print documents as well. That's pretty much all he needs to do. And then he has his iPad as well, and I taught him how to print stuff from his iPad too. I also got him to use 1Password, and he has unique password for each site. These are all things I've taught my dad to do.