Chosen Solution

Hello, My late 2018 MacBook Pro with touch at 13 inch now has black horizontal lines through it. This happened after updating to macos Catalina (15.1) and using Catalina for about 3 days. I just turned it on, and it’s on every screen.

To isolate whats failed here you’ll need to hookup an external display to see if the issue is within the GPU logic or the internal display. Do you still have AppleCare coverage? Did you get AppleCare+ service contract for your system? In either case you should try to get Apple to fix your system under extended warranty.