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bug2k12

Member

Registered: 2012-07-16

Posts: 18

Nvidia 770 fan constantly ramps up/down

I running an nvidia 770 and recently the fans have been ramping up/down. Just idling at the desktop the gpu temp is showing 33degC and fan speed is variable, between 25 and 30% nothing changes but every 10-15seconds it ramps the fans up to 100% for a second and then drops back down.

The drivers are version 415.18. I have enabled 'coolbits' '4' and in the nvidia-settings panel changing the fan control to manual has no effect, the fan speed continues to be automatic and variable.

Any ideas on what might be causing this?

Thanks.

rwek

Member

Registered: 2020-10-16

Posts: 1

Re: Nvidia 770 fan constantly ramps up/down

Hi,

i have a similar question. I'm running an RTX2070 Nvidia Card. This gpu has 2 fans. When i boot up, i got 1 fan running at normal speed the other fan boosts up and down. nvidia settings show stable values for fan1 at 1500 rpm 41 % speed. However the speed values from the second fan go vom 2000 rpm to 18000 rpm up and down. Setting coolbits to 4 didnt have any effect for getting both fans at a stable rpm rate.

Nvidia driver version would be 455.28.

It seems as if the sensor didnt get the correct rpm signal? Is this a hardware related thing or are there any other reasons with caused this behaviour?

Thanks in advance