If lmsensors doesn't see the fans, how about in the bios? Bios should show the rpm there, if not, that sounds like the hardware monitoring chip died. Not exactly the most sophisticated things.

If bios sees it, but os cannot, I'd check there isn't a bios update for "feature upgrades" related to acpi monitoring. Vendor bios acpi implementations always leave something to be desired here, and they probably had some workaround in place with whatever they shipped it with.

This is where windows laptop vendors always tweak drivers for their units, but no such attention from most vendors for linux. This is what dell does for their "developer edition" laptops that come with tweaked distro installs and their own repos, and others that support linux like system76. As I often find, they don't always "just work" otherwise.

-mb


On 11/24/2016 01:56 AM, [email protected] wrote:
I am gentoo installed on my system76 gazelle laptop. I just got it this week
and for some reason I cannot control the fan speed.Even when idle the fan
runs. I installed lm_sensors, however it does not detect the fan (see below).
Has anyone ran into something similar before?

Thanks!

gentoo-gazelle ~ # sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +37.0°C  (crit = +120.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +37.0°C  (high = +100.0°C, crit = +100.0°C)
Core 0:         +34.0°C  (high = +100.0°C, crit = +100.0°C)
Core 1:         +35.0°C  (high = +100.0°C, crit = +100.0°C)
Core 2:         +36.0°C  (high = +100.0°C, crit = +100.0°C)
Core 3:         +33.0°C  (high = +100.0°C, crit = +100.0°C)


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