How to fix pink lines that appear when discrete GPU is used?
I have a 15" Early 2011 MBP that comes with an integrated Intel GPU and a discrete AMD GPU. Whenever the dedicated GPU is used, some pink lines appear on the white parts of the screen. However, the integrated GPU works just fine. Additionally, when I connect my laptop to an external display, I don't see the pink lines on the external display, but I see them on the laptop's screen.
I understand that Apple had a program to fix this issue, but that program does not cover my laptop anymore. Additionally, I have seen similar questions on the Internet, but I'm not sure whether their problem is similar to mine.
I have also seen different solutions such as replacing LVDS cable, logic board, etc. Has anyone tried any of these solutions?
P.S.
You can see a few pink lines at the top of white area and a big pink area at the bottom.