| Comment | I've had a few 2011 MacBook Pro models, and they have a similar looking problem that comes from the GPU solder going bad. (It was relatively early in the days of working with lead-free solder and it deteriorated over time). However the computer had two graphics sets - a basic onboard set that uses little energy, and a separate GPU that kicks in for more demanding tasks. It's the separate GPU that goes bad.
So what would happen with me is that if I could keep the computer on the basic graphics all would be well. Open Photoshop and the screen goes pretty similar to yours.
I'm just speculating, but I wonder if Catalina kicks you over onto the separate GPU more readily than the previous versions of the OS?
For me, resetting PRAM and SMC could help default back to the basic graphics, enough to troubleshoot. But that might not be the case with Catalina.
The only solution for me was to get the GPU solder reflowed (with good old leaded solder). That's definitely not a DIY task though. |
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