The extra heat is also problematic when connecting an external 4k monitor which makes the whole computer get too hot. This is a problem because it also heats up my CPU +10c when dGPU is enabled and just idling, due to the fact that they share a heat pipe. This is also confirmed by the idle temperatures rising from low 40c's to high 50c's once it's stuck at 17W. After toggling automatic graphics switching on and back off (dGPU on), the card is at 17W idle forever until the next reboot. When first booting with automatic graphics switching disabled (dGPU on), the idle power draw is 3W. ![]() This is confirmed by the reported power use by the "GPU Rail" metric in HWSensors (HWMonitor) at idle of 17W. ![]() My NVIDIA GeForce GT 750M is not able to go into its lowest power state once automatic graphics switching is toggled on and then back off (iGPU being used, then dGPU). ![]() Here comes another dedicated GPU (dGPU) issue on my Late 2013 15" MacBook Pro!
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