I had never tried adjusting the fan speed until you posted this.
I would suggest you file a bug against the nvidia-settings package at ReportingBugs - RPM Fusion
(or where ever else you may have installed that package from)
Fedora 35 / NVIDIA Driver Version: 495.44
nvidia card active cooling does not work
60-70 degrees and the fan does not rotate
# nvidia-settings -V
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 49 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 50 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 51 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 52 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 53 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:DP-1',
specified on line 54 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 55 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 56 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 57 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 58 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 59 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-0',
specified on line 60 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 61 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 62 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 63 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 64 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 65 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
WARNING: Failed to match any targets for target specification 'DPY:HDMI-1',
specified on line 66 of configuration file
'/home/dankahazi/.nvidia-settings-rc'.
(nvidia-settings:13443): GLib-GObject-CRITICAL **: 22:11:08.728: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
WARNING: Unhandled integer attribute PlatformPowerMode (434) of GPU (0)
WARNING: Unhandled integer attribute GPUResizableBAR (438) of GPU (0)
WARNING: Unhandled integer attribute GPUSlowdownTempThreshold (61) of GPU (0)
WARNING: Unhandled integer attribute GPUGraphicsClockOffsetAllPerformanceLevels
(424) of GPU (0)
WARNING: Unhandled integer attribute GPUGraphicsClockOffset (409) of GPU (0)
WARNING: Unhandled integer attribute
GPUMemoryTransferRateOffsetAllPerformanceLevels (425) of GPU (0)
WARNING: Unhandled integer attribute GPUMemoryTransferRateOffset (410) of GPU
I checked with nvidia-settings -q all and all the fan speeds are read-only and cannot be adjusted.
My card handles the GPU fan speed automatically controlled by temp and I do not have to do anything to manage it. If your gpu fan is not spinning then it is likely that it needs replaced.