For a few weeks, the fans of my Lenovo B590 laptop, running on Xubuntu 14, turn to high speed a few minutes after it is turned on. The fans won't speed down until I turn the computer off.
This is quite strange, since
This didn't happen before
The temperatures are quite low (are they ?)
$sensors
Adapter: Virtual device
temp1: +36.0°C (crit = +88.0°C)
temp2: +30.0°C (crit = +126.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +37.0°C (high = +72.0°C, crit = +90.0°C)
Core 0: +34.0°C (high = +72.0°C, crit = +90.0°C)
Core 1: +31.0°C (high = +72.0°C, crit = +90.0°C)
thinkpad-isa-0000
Adapter: ISA adapter
fan1: 0 RPM
pkg-temp-0-virtual-0
Adapter: Virtual device
temp1: +37.0°C
$sudo hddtemp /dev/sda
/dev/sda: ST500LT012-9WS142: 33°C
The computer is under low load:
top - 08:30:15 up 16 min, 2 users, load average: 0.28, 0.23, 0.23
Tasks: 197 total, 1 running, 196 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.8 us, 0.5 sy, 0.0 ni, 98.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 3607944 total, 1973956 used, 1633988 free, 99660 buffers
KiB Swap: 3744764 total, 0 used, 3744764 free. 789936 cached Mem
The BIOS is up to date (and there are no fan settings in it)
The fan is clean and dust-free
Why would the BIOS turn the fans to high speed where there seem to be no reason for that ?
It seems that we cannot control the fan manually with this model, so I guess the only solution is to understand why this happens.
Best Answer
Its possible the fan is just running at the default speed for the power its getting if the bios has no setting for fan speed control? software issue?
seems their are many other people with your same issue
please refer here
the issue is still yet to be resolved with out having my hands on an B590 its hard for me to help you further. I think it most likely is a driver or bios issue.