XPS 15 9550 - fan always on while charging

Hello friends,

since i purchased my 9550 fhd / i7 / 16gb / 512gb Toshiba i always have the problem that the fan is running @ ~ 2500rpms while charging the battery. The cpu is under no load. Drivers are all up to date. Bios 1.2.10 (newest bios has problems with charging...)

It is independent of the bios charging modes. System cooling policy is passive (on battery) and active (plugged in). Switching these doesn't change anything - as soon as the battery is charging albeit the cpu/system usage the fan is kicking in. It gets quite annoying, i only tolerated it because i thought in would be fixed in the near future.

I read through quite a few threads/posts with the same problem - but most are months old and/or with suggestions/fixes i already tried.

I had the same problem with usb c - also a well known problem. Currently i don't have an usb c device so i can't test if this problem still exists.

Is there any known fix? Or is it just designed that way and all 9550 users have to suffer under these problems?

Cheers