I guess that Ubuntu is unable to see the fans and is thus unable to take control over them. proc/cmdline = BOOT_IMAGE=/boot/vmlinuz-4.19.2-041902-generic root=UUID=5394fef0-92d3-4753-a6a1-fd7b5c4f9cea ro quiet splash quiet acpi_rev_override=1 acpi_osi=Linux scsi_mod.use_blk_mq=1 nouveau.modeset=0 npm=0 mem_sleep_default=deep vt.handoff=1
Installed smbios-utils and set it to different modes (balanced, cool-bottom, quiet, performance) Undervolt by -140 mV on core and CPU, and -40 mV on iGPU (using this link) Set the graphics card to Intel for power-saving Installed and activated thermald, tlp, powertop and intel-microcode. Lm_sensors: cannot find the fans even after "sudo sensors-detect" On Windows, the fans are completely off at idle or light work. I think the fans are activated somewhere within this range, then cool the CPU and thus get the signal again to stop the fans, etc.
The CPU temp is between 39 - 42 degrees celsius. Everything works properly, however the fans are continuously going on and off. I'm running dualboot Windows 10 and Ubuntu 18.04 (using the respin from this link).
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