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05-31-2020

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Overly aggressive fan on c940-15IRH

2020-05-31, 11:57 AM

I am trying to figure out how to control the fan curve on my yoga c940 15.6 FHD 2 in 1. I dont see any meaningful options in the settings and the fans are running at 80+ % 24/7. When I check the package temp for the gpu and cpu both are around 40c so there must be a bug in the fan controller or an overly aggressive profile set somewhere. Hoping someone can point me in the right direction to get this corrected as its had a dramatic impact on battery life for this system.  I am getting no where near the rated amount of battery life and only around 3 or 4 hrs at best with screen on min brightness and airplane mode enabled. 

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137 Posts

12-08-2019

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Re:Overly aggressive fan on c940-15IRH

2020-05-31, 17:44 PM

Did you use Fn+Q to toggle battery saver mode + undervolt? That would def help in your case

 

https://www.reddit.com/r/Lenovo/comments/gao5ir/c940_the_ultimate_guide_to_a_better_battery/

 

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