I have an Asus N76VB notebook with Ubuntu 14.04 and TLP for power managment. However, the fan is always on. It's not really loud, but it's annoying. My CPU usage is around 1-2%. It's clocked at 1.20 GHz.
I've added acpi=force
to my boot parameters but it doesn't change anything.
/proc/acpi/fan: No such file or directory
/proc/acpi/thermal_zone: No such file or directory
I've loaded all Asus ACPI modules.
lsmod | grep asus
:
asus_nb_wmi 16990 0
asus_wmi 24191 1 asus_nb_wmi
sparse_keymap 13948 1 asus_wmi
video 19476 2 i915,asus_wmi
wmi 19177 2 mxm_wmi,asus_wmi
Somehow, it can read the temperatures.
sensors
:
acpitz-virtual-0
Adapter: Virtual device
temp1: +43.0°C (crit = +108.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +44.0°C (high = +87.0°C, crit = +105.0°C)
Core 0: +44.0°C (high = +87.0°C, crit = +105.0°C)
Core 1: +42.0°C (high = +87.0°C, crit = +105.0°C)
Core 2: +39.0°C (high = +87.0°C, crit = +105.0°C)
Core 3: +39.0°C (high = +87.0°C, crit = +105.0°C)
asus-isa-0000
Adapter: ISA adapter
temp1: +43.0°C
I really hope someone knows how to solve this. Almost all information I could find was about saving power to create less heat.
I got Intel and NVIDIA (GeForce 740M) graphics but I'm almost anytime on Intel.
$ sudo lshw -c display
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:43 memory:f7400000-f77fffff memory:d0000000-dfffffff ioport:f000(size=64)
fwts fan
:
Best Answer
Canonical developed something called FWTS which will systematically test the ACPI features provided and report on their health and possible corrective solutions. Run it and post the contents here (pastbin please) and to a launchpad bug against the linux-kernel.
At a minimum run the "thermal_trip fan" tests.
[continued using results from FWTS]
OK. That confirms the issue, there's no feedback.
It doesn't appear that you have the asus-laptop module installed. Sometimes these laptop specific support modules do the trick for these components
This appears to have worked at one time, Ubuntu 12.04 on asus n76vb fan speed not working, which would make your case a regression. Unfortunately in that case the remedy was "I updated a bunch of stuff and it worked" :(.