Yes, the laptop is 7 years old, and i think it needs to retire. The lines do not appear on an external monitor, so I am on the fence whether it is a monitor or GPU issue. Flexing the entire keyboard or the screen makes no difference. I think it is a cracked solder joint on the chip, and I checked the internal cable connector but it was fine. I use this computer for school and it is very annoying, as it lasts about half an hour, and when unplugged it uses less power to save battery = less heat.Ībout the battery saver, when unplugged, the laptop switches from 840M to integrated graphics, but it doesn’t seem to make a difference. The MacBook Pro and older MacBook Air models. Each notebook includes a series of sensors for temperature detection. Once I purchased a new fan a few years back the lines on the screen stayed for longer and longer because the fan was keeping the GPU cool. MacBook How to measure GPu temperature MBP 13 mid-2010 MacOS Constant kernel GPU panics (GPUPanic.cpp:127) on mid-2010 MacBook Pro (6,2) MacBook Mid 2014 Retina MacBook Pro sometimes crashes switching to discrete GPU MacBook Can’t a Macbook Pro work properly on integrated GPU only MacBook External GPU on MacBook Pro. Your MacBooks ambient temperature should between 10° and 35☌ (50° and 95☏). Also, the GPU is further away from the heatsink than the CPU, so it got hotter quicker. Didn’t really notice it for a while other than when It was really cold, because it heated up fast with no fan. I later did a fresh install of Catalina and everything was fast again. I use a 4k monitor and everything got super slow, fans started spinning, processes got throttled, and I could barely get any work done. My Acer Aspire V3-572G started doing this about 4 years ago after the fan failed while gaming. After upgrading my MacBook Pro 13' (2017) to Big Sur in Dec 2020 I had a similar experience.
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