Chosen Solution

What does this mean…………..panic(cpu 1 caller 0xffffff7f912a5bce): “GPU Panic: [] 3 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff9129761000 0x0a5480a2, D0, P2/4\n”@/Library/Caches/com.apple.xbs/Sources/AppleGraphicsControl/AppleGraphicsControl-3.13.74/src/AppleMuxControl/kext/GPUPanic.cpp:127 I upgraded to Sierra, and I periodically get this.. Patrick

This sounds like an issue with the GPU (Graphics Processor) for sure. The A1286 15" MacBook Pro from 2010 is notorious for GPU issues. I believe the issue is caused by a poly-tantalum 330µf capacitor shorting the framebuffer input voltage to ground when it’s not supposed to. Apple should have used a different capacitor type better suited for that circuit. Some people’s 2010 A1286s are so affected that the computer cannot even start up, or they will experience common kernel panics and restarts. If the issue gets worse and impedes usage of the computer, I would either take it to a 3rd party MacBook Repair specialist that does component-level motherboard repair, or to Apple if you can afford it.