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Service vs App: different fan behavior/temps

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#4,082 13 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
43/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Domain
desktop

Research direction

Compare Fan Control running as a service with the client application using the reported hardware setup and the same profile. Start by identifying how each mode loads and applies profiles, then check whether fan speeds and idle temperatures differ after restart. Done means the service and app behave consistently; the issue does not name source files or tests.

Written by the indexing model from the issue text.

Description

Describe the bug
FC starts as a service on my PC. I have noticed after restarts my temps gradually rise. If I open the application (stopping the service), the fans spin up initially, then settle. However, the temps stay lower (at idle) when the app is open. Both the app and service should be running the same profile.

It seems as though the service isn't running the exact same profile as when the client application is open, but they should be the same profile, correct?

Relevant hardware specs and setup
ASUS ROG Crosshair X870E Hero BTF
Ryzen 9 9950X3D
Noctua NL-LC1-36 AIO with Phanteks T30-120 fans x3
Corsair iCUE Link case fans (x10)
ASUS ROG RTX 5090 Matrix

Dominant language
No language data
Stars
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Forks
619
PR merge metrics
No merged PRs in 30d

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First steps

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  4. Open a pull request that references the issue number.

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