[GH-ISSUE #1217] Fan Speed Go Back to Normal After Reaching Target Speed #1043

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opened 2026-02-26 00:34:14 +03:00 by kerem · 1 comment

kerem commented

2026-02-26 00:34:14 +03:00

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Originally created by @techsavvyumer on GitHub (Jan 14, 2022).
Original GitHub issue: https://github.com/hirschmann/nbfc/issues/1217

Hi, I am using NBFC and my laptop is HP EliteBook 8440p but the Config file of HP ProBook 6550b is working fine for me. I am using Kubuntu Linux 21.10. The problem is that the Fan goes back to normal speed after reaching the targeted speed. For example the Target Speed is 80% and as soon as the Fan reaches 80% speed, it goes back to normal speed.

I also tried to control fan speed manually by:
nbfc.exe set -f 0 -s 100
But as soon as it reaches the Target Speed 100% Fan Speed goes back to normal (at almost 10% to 20%) but the status -a command shows Current Speed as 100%. See the attached screenshot.

My actual purpose of controlling the Fan Speed is to make it run at 100% always, irrespective of any kind of condition. Please help me solve this, @hirschmann . Tell me why it goes back to normal, I am trying to fix it for too long but couldn't figure it out.

PS: I am a newbie to Linux and I really want to learn it and switch to it permanently.

Originally created by @techsavvyumer on GitHub (Jan 14, 2022). Original GitHub issue: https://github.com/hirschmann/nbfc/issues/1217 Hi, I am using NBFC and my laptop is **HP EliteBook 8440p** but the Config file of **HP ProBook 6550b** is working fine for me. I am using **Kubuntu Linux 21.10**. The problem is that the **Fan goes back to normal speed after reaching the targeted speed**. For example the Target Speed is 80% and as soon as the Fan reaches 80% speed, it goes back to normal speed. I also tried to control fan speed manually by: `nbfc.exe set -f 0 -s 100` But as soon as it reaches the Target Speed 100% Fan Speed goes back to normal (at almost 10% to 20%) but the `status -a` command shows Current Speed as 100%. See the **attached screenshot.** **My actual purpose of controlling the Fan Speed is to make it run at 100% always, irrespective of any kind of condition. Please help me solve this, @hirschmann . Tell me why it goes back to normal, I am trying to fix it for too long but couldn't figure it out.** **PS: I am a newbie to Linux and I really want to learn it and switch to it permanently.** ![Screenshot_20220114_160438](https://user-images.githubusercontent.com/65268746/149506129-05fd796e-72a8-47a4-8831-4fd48ae39578.png)

kerem

2026-02-26 00:34:14 +03:00

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kerem commented

2026-02-26 00:34:15 +03:00

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@github-actions[bot] commented on GitHub (Jul 15, 2022):

This issue is stale because it has been open more than 180 days with no activity. If nobody comments within 7 days, this issue will be closed

@github-actions[bot] commented on GitHub (Jul 15, 2022): This issue is stale because it has been open more than 180 days with no activity. If nobody comments within 7 days, this issue will be closed