I have an old HP G60 laptop that has an AMD Turion X2 sticker as well as an NVIDIA one.
I installed Ubuntu 18.04 via USB however while it was installing the screen constantly flickers. I was able to see the installation progress however again constant screen flickering.
After it installed, screen flickering issue is downright unbearable. I've managed to view some posts here and enter a few things using Ctrl+Alt+t, but nothings worked.