B580 6737 driver, Fan tuning 0% fan does not work

[SJN]

If you customize the fan curve, the 0% line is ignored, and the fan runs all the time.

Even if you switch back to "off" stock setting, the fan still runs even though the card is below 30 degrees C.  Only a reboot can bring it back to normal.  But if you modify the curve, just move one of the balls slightly, and save settings, then the fan will be on no matter what temp the gpu is.

[VonM_Intel]

Hi, SJN.

Thank you for posting in our Community and for providing such a clear description of the behavior you're experiencing with the B580 6737 driver and fan tuning settings. Based on your report, it appears the fan curve customization is not respecting the 0% threshold, causing the fan to remain active even at low GPU temperatures. Additionally, I understand that reverting to the default “Off” profile doesn’t restore expected behavior without a full system reboot, and any minor adjustment to the curve results in persistent fan operation regardless of temperature. This behavior suggests a potential firmware or driver-level bug related to fan control logic or profile memory caching. To drive effective root cause analysis and engage in targeted troubleshooting, kindly confirm the following:

• When you set the fan curve to 0% at idle temps, does the software accept and save that value, or does it round up or override it?
• Could you confirm where you adjusted the fan curve? Are you making these changes through the Intel Graphics Command Center, or are you using any third-party utilities such as MSI Afterburner, HWMonitor, or similar tools that may also impact fan behavior?
• Is the fan behavior consistent after every reboot, or does it only occur after curve modification during a session?
• Are you observing these issues during idle, under load, or both? And are the GPU temps staying below 30°C throughout?
• If you have done any other tests aside from this, please let me know the details so we don't cover the same ground twice.

Additionally, I'd like to delve deeper and verify specifics like the OS, CPU, and any system errors. Utilizing the Intel SSU tool will enable me to collect detailed information about your system setup, which could aid in identifying the underlying cause of this issue. For your privacy and security, I have already sent you an email to collect the SSU reports. Once I receive the logs, I can investigate further and provide better assistance

Have a nice day!

Best regards,

Von M.

Intel Customer Support Technician

[SJN]

First picture, I have just pressed "advanced", and then "appl changes"

And everything is normal.  Fan RPM is zero because it is at 56 degrees

Second picture, I have just pulled the 65 % bubble 1 degree higher from 50 to 51 degrees, and then pressed "apply setting"

Now the RPM shoots up to over 1000rpm

Third picture I just fragged all the bubbles down to zero just too see what happened. It reduced the rpm, but never off.

Fourth picture I have turned off fan tuning, and saved settings.  RPM is fluctuating from 0 to 800+ rpm and will never settle at 0 

Fith picture shows the metrics page. I have to reboot for the fan to go into 0 fan mode again

Six, my system info.

[SJN]

Still the same on 6739 driver.

[VonM_Intel]

Hello, SJN.

Thank you for providing such a detailed set of screenshots and explanations regarding the fan RPM behavior. I can see that you've carefully tested different configurations, and I appreciate the clarity of your observations. Based on the information you've shared, it appears that the fan control system is exhibiting unexpected behavior when adjustments are made to the fan curve, as well as when fan tuning is disabled. This certainly seems like an anomaly that is not behaving as expected. I’ll need to further investigate this issue and will post an update in this thread once I have more information about this matter. I’ll keep you updated on my findings and let you know if there are any additional steps we can take to resolve this.

Best regards,

Von M.

Intel Customer Support Technician