Just upgraded on Arch Linux and I’m experiencing the same problem. My GTX 1060 graphics card emits a harsh noise when spinning up/down so I set the fan speed to a fix value with this on startup:
nvidia-settings -a "[gpu:0]/GPUFanControlState=1" -a "[fan:0]/GPUTargetFanSpeed=55"`
Coolbits is set to 4:
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "Coolbits" "4"
EndSection
I start X as user with exec startx from tty1
Setting the GPUTargetFanSpeed returns an “Unknown Error”. I downgraded the nvidia packages and the kernel and got it working again. Thanks @jwmaness!
Downgraded from:
nvidia-465.27-5
nvidia-settings-465.27-1
nvidia-utils-465.27-1
linux-5.12.2.arch1-1
Downgraded to:
nvidia-460.67-4
nvidia-settings-460.67-1
nvidia-utils-460.67-1
linux-5.11.10.arch1-1