I set up Ubuntu with KDE (Kubuntu?) on an old laptop for my wife. Win 10 on the laptop was so slow that the machine was unusable. She uses Firefox, Google Docs,

I set up Ubuntu with KDE (Kubuntu?) on an old laptop for my wife. Win 10 on the laptop was so slow that the machine was unusable. She uses Firefox, Google Docs, and she uses a printer. She's had zero problems in two years and I've updated the machine twice for her. Of course how usable the machine is will be dependent on what software you need.