The latest NVIDIA's drivers has added a capability to shut off the GPU (dedicated) when you are not using it for games or programs, so it's normal. I'm having the same thing too, but when I launch games/applications that uses my dedicated GPU, the -1 MHz thing is now gone, and is now running at like 1189MHz (using GTX 960m, so lower GPU frequency). You should not mind that, it's normal, and actually good because it saves power and keeps the laptop chill during idle or normal tasks.
Thank you for answering my post! I tried running a game and looking at the ROG gaming center while it plays. The information of the GPU effectively turn correct while playing. Still, I find the heat quite high for the fan not to start...
Did you try using Hyperboost in the fan/maxing it out? If you tried it and it still doesn't work, try cleaning your laptop chassis and fan, if not working then; try replacing your fan/ask for fan replacement. Oh, and by the way, your laptop is extremely thermal throttled, I advice to get it remedied as soon as possible.
I can max the fan, it works fine, but if I let it in auto mod, the fan just doesn't start by itself when the GPU or the CPU is becoming hot. This is the main problem I'm posting about. I had it before, and fixed it by updating the BIOS/Firmware. Worked great for about 1 month, but now has stopped working properly. When the fan is on, it throttle at a nice 45° or around, so it's really a fan issue.
I'm am still having the trouble if anyone has any hint on how to fix this...