Hi there, I've got the "official" CPU fan from Udoo. It works okay (even though a litte louder than I expected at 50%). But when it turns on it does not run at the same speed all the time. It rather accelerates (maybe to 75% or 100%) for a very short time, and then goes down to 50% for like 3-4 seconds. Then it goes up to 100% for like half a second and back to 50% for 3-4 seconds. Is this beaviour known and expected? I updated to firmware 1.0.2 and reset the Bios Settings to default, no difference. AC1 is 55°C with 50% fan speed. AC0 is 75°C (should be 100% then). Passive Cooling Temp, Hot Temp and Critical Temp are above these. System is Ubuntu 16.04.2 with Kernel 4.10 but that should not matter... Can anyone help out or confirm this? Thanks a lot!