Fan Control v214 doesn't recognize GPU sensor (worked in old versions) - Nvidia 2080 Ti

[Kikerumbo]

Fan Control v214.
Nvidia driver 572.16.

GPU temps aren't available. I have "Show hidden cards" enabled.

Log file shows this:

2/12/2025 4:38:28 PM: Try refresh failed. Retry count (2) exceeded.
NVApi could not initialize or has no sensors.
12-Feb-25 16:39:05: Open - NvAPIWrapper.Native.Exceptions.NVIDIAApiException: NVAPI_ERROR
at NvAPIWrapper.Native.GPUApi.GetClientFanCoolersStatus(PhysicalGPUHandle gpuHandle)
at NvAPIWrapper.GPU.GPUCoolerInformation.<get_Coolers>d__2.MoveNext()
at System.Linq.Enumerable.d__52.MoveNext() at System.Linq.Enumerable.<SelectManyIterator>d__192.MoveNext()
at System.Linq.Buffer1..ctor(IEnumerable1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at FanControl.Domain.BackendProviders.NVApiWrapper.NVApiWrapperBackendProvider.Open()

Thanks.

[Rem0o]

Did you just update the driver? Have you rebooted since?

[Kikerumbo]

@Rem0o Yes sir. Updated the driver while having an old version of Fan Control installed (v18x). I noticed the fan controls were not working and that's when I updated Fan Control to v214.

PC has been rebooted +5 times since. Also, I have set "Start at user log on" to 30 seconds. Same result. No GPU temps.

Thanks.

[Rem0o]

NVAPI_ERROR means the driver returns an error when FanControl tries to access it. Have you done a clean install of the driver?

[Kikerumbo]

That I know, yes, but I can always use DDU and try again if that's your advice. I'll do that next and report back when it's done. Thanks.

…

On Wed, Feb 12, 2025, 17:23 Rémi Mercier ***@***.***> wrote: NVAPI_ERROR means the driver returns an error when FanControl tries to access it. Have you done a clean install of the driver? — Reply to this email directly, view it on GitHub <#2965 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJPUKMF4SZY46XWCVGIEJXL2PNYRTAVCNFSM6AAAAABW756BKCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNJUGIZDMOBWGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[Hun73rdk]

Its a known problem i reported it almost a year ago and only way i solved it was going back to studio drivers i used before
#2682 (comment)

[Hun73rdk]

I got it working the other day with the newest nvidia studio driver then i reinstalled windows and i am back to

13/02/2025 04.17.19: Open - NvAPIWrapper.Native.Exceptions.NVIDIAApiException: NVAPI_ERROR
at NvAPIWrapper.Native.GPUApi.GetClientFanCoolersStatus(PhysicalGPUHandle gpuHandle)
at NvAPIWrapper.GPU.GPUCoolerInformation.<get_Coolers>d__2.MoveNext()
at System.Linq.Enumerable.d__52.MoveNext() at System.Linq.Enumerable.<SelectManyIterator>d__192.MoveNext()
at System.Linq.Buffer1..ctor(IEnumerable1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at FanControl.Domain.BackendProviders.NVApiWrapper.NVApiWrapperBackendProvider.Open()

hmm no other program can read the fan speed
Not even Nvidia's own app can show fan speed
Tried a ton of studio drivers the one i found where fan monitoring and where you can change fan speed is 560.70 all after that i cant do anything and Nvidia's new app cant even see the speed so Nvidia broke something on some PCs