Big Sur update display problems
I just did the Big Sur update and my display suddenly has then colored lines dancing across the screen. I have 2018 MacBook Pro. I did the NVRAM & SMC resets but it did not fix the issue. Apple support told me it may be a hardware issue, however, it started immediately after the update.
When I mirrored my display to the tv, the tv image was fine, but the thin lines are still on my MacBook.
Please help with any suggestions!