“Here’s a problem that could cause a panic,” Glenn Fleishman writes for Macworld.
“Macworld reader Cil has been seeing black squares in their photos at random locations and often in different places,” Fleishman writes. “It not only appeared on screen, which was bad enough, but when exporting to create a photo book, a black square appeared in one of those.”
“Despite the help of an Apple Store in reinstalling macOS and deleting preference files, the problem persists. I have to say that I was almost stumped this one, but the internet provides. I think I have an answer for this peculiar problem,” Fleishman writes. “The problem is with the GPU, or graphic processing unit, in that Mac.”
Read more in the full article here.
MacDailyNews Take: Good luck!