I got another message from @Dell-SreejithR:
"If the fan runs normally or constantly it could be an issue with the application in the background. Please try a clean boot in normal mode, disable all option including the anti-virus.
If the issue persists, please share a 30-minute video running HWinfo with the AC adapter connected & then a 30-minute video with the system on battery." (03-19-2019 12:38 PM)
I disabled everything I could find. No dropbox, no Onedrive, no GoogleDrive, no AntiVir from Windows. Clean start.
Just opened HWINFO and selected some interesting Graphs.
So I made a new video:
30 min with AC (The fans are always one despite the low temperatures)
10 min only Battery (The fans go off, and stay off)
10 min with dGPU active (The fans are crazy)
The .CSV data I only sent to @Dell-SreejithR. I don't know if it is a good idea to share them with everyone? Like the service tag...
From the video description:
@00:00 - the AC run starts. The temps are ~40°C and the fans are always on with ~2500rpm
@31:00 the AC is unplugged and the Battery run starts. After 10 minutes I stop because everything is fine. And its just a waste of time.
@42:00 I start lightroom to activate the nvidia GPU. I don't know another way of doing it.
I wait until some heat is in the machine.
It warms up, cools down, and settles in the neighborhood of 45°C
This is more of a normal temperature while using the machine. Instead of the first minutes were nothing happend on complete idle.
@46:40 Here the described issue can be observed very good. The windows for the fans are the two located on the left side. Second from the bottom.
Normal operating temperature, but the fans go on and off.
Sometimes they do it on their own, sometimes they are triggered by a mouse click or any interaction with the notebook. First I try zooming in the picture in and out, or just selcting the next picture. At the end of the video I try clicking around in the operating system. The notification bar, taskbar, ....
@49:09 I remembered the GPU temp. So I opended the window for it to show. But it is basically on its lowest possible temperature