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Problem Description:
When using the factory default fan curve settings for the GPU (NVIDIA GTX 1660, Arch Linux, KDE/Wayland), the fans exhibit unstable behavior at low RPMs. Specifically, setting a static fan speed below 33% causes erratic fan operation (e.g., sudden RPM spikes, inconsistent cooling). However, at higher RPMs (above 33%), the fans operate smoothly without issues. This creates a cycle where the GPU temperature fluctuates between thresholds (e.g., 55–56°C), triggering frequent fan speed changes between 0% and 30%, leading to instability.
The described fan instability at low RPMs (<33%) does not occur on Windows (MSI Afterbearner).
NVIDIA-SMI 570.133.07 Driver Version: 570.133.07 CUDA Version: 12.8 (NVIDIA-OPEN-DKMS)
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I remember I couldn't go below 30% fan speed on my old 1080. Or was it 35% can't remember. I know it didn't support 0RPM fan speed. Check in windows if fans are spinning at 0% setting, software might report 0% but fans might be still spinning at that 30%.
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I remember I couldn't go below 30% fan speed on my old 1080. Or was it 35% can't remember. I know it didn't support 0RPM fan speed. Check in windows if fans are spinning at 0% setting, software might report 0% but fans might be still spinning at that 30%.
I checked on Windows, and those 0 RPM fan speed readings are accurate. The fans do indeed stop spinning.
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Seems like a mixed bag for 1660, founder's edition doesn't have zero RPM mode but others do (BIOS setting).
Looked in nvidia settings panel? Enabled coolbits?
Try it from command line:
nvidia-settings -a "[gpu:0]/GPUFanControlState=1" -a "[fan:0]/GPUTargetFanSpeed=0"Adapt to your GPU number if not 0, or check with nvidia-smi.
Last edited by qu@rk (2025-03-28 20:43:38)
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