RTX PRO 2000 Blackwell: Loud GPU fan at idle / PWM control issue on ZimaOS

Insight & Feedback
1

Hi everyone,

I’m running into a bit of an issue with my setup and was hoping someone here might have a clever solution or work-around!

I recently installed an NVIDIA RTX PRO 2000 Blackwell in my ZimaOS rig. While everything seems to be working, the GPU fan is constantly blasting at 100% maximum speed, even when the system is sitting completely idle. Needless to say, it sounds like a small jet engine taking off in my room! :sweat_smile:

Interestingly, when checking via SSH, nvidia-smi shows the GPU in its P8 idle state with an indicated fan speed of 30% at 30°C:

| NVIDIA-SMI 580.105.08 Driver Version: 580.105.08 CUDA Version: 13.0 |
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |
| 0 NVIDIA RTX PRO 2000 Blac… On | 00000000:01:00.0 Off | Off |
| 30% 30C P8 6W / 70W | 2MiB / 16311MiB | 0% Default |

So software-wise the card seems to be initialized fine, but there appears to be a disconnect between the driver signal and the actual physical PWM fan control on ZimaOS.

Has anyone encountered this PWM handshake issue on newer Blackwell / RTX PRO cards under ZimaOS, or knows a way to properly pass through or override the fan target?

Any tips or guidance would be super appreciated!

Best regards

2

Hi everyone,
I noticed in the ZimaOS 1.8 release notes that they included: “Added fan control policies for select devices to improve cooling performance and system stability”

Does anyone know if the NVIDIA RTX PRO 2000 Blackwell is included in these newly supported devices? Also, for those already running 1.8, where exactly can these fan settings be found or configured?

Best regards