I know this is a common problem and have read other topics but couldn't resolve. Anyways yesterday I found a solution - I have 2 graphic cards (hybrid) and they were both on. So I turned one off and installed Jupiter for power management and from there on the fans were quiet and I was happy as hell.
However (:)), yesterday evening I also updated the system and the fan and it's noise came back. I checked whether I am using only 1 graphics card and I am.
c0dehunter@mintBox ~ $ sudo lshw -c video [sudo] password for c0dehunter: *-display description: VGA compatible controller product: RS780M/RS780MN [Mobility Radeon HD 3200 Graphics] vendor: Hynix Semiconductor (Hyundai Electronics) physical id: 5 bus info: pci@0000:01:05.0 version: 00 width: 32 bits clock: 33MHz capabilities: pm msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:18 memory:c0000000-cfffffff ioport:c000(size=256) memory:fbcf0000-fbcfffff memory:fbb00000-fbbfffff
Maybe the problem is (false) temp reading from GPU?
c0dehunter@mintBox ~ $ sensors acpitz-virtual-0 Adapter: Virtual device temp1: +44.0°C (crit = +105.0°C) k10temp-pci-00c3 Adapter: PCI adapter temp1: +47.0°C (high = +70.0°C) (crit = +115.0°C, hyst = +110.0°C) radeon-pci-0200 Adapter: PCI adapter temp1: +127.5°C
The thing that is weird is that if I boot into Windows the fan is still at full power (previously it wasn't). Did I f--- up my hardware with software? :)
//OH, yes - I forgot to mention that my laptop is not hot at all. The temps are about 50°C.