How to see all my fans in sensors?
Solution 1
I came across this problem a while back. From what I understand, the kernel is preventing lm-sensors
from looking at fan usage, so I modified my GRUB settings to allow lm-sensors
to access this information. First, open the configuration file:
sudo gedit /etc/default/grub
Then set the GRUB_CMDLINE_LINUX
option to the following:
# This allows fan usage to be read by lm-sensors
GRUB_CMDLINE_LINUX="acpi_enforce_resources=lax"
Save the file and close, then update your GRUB settings:
sudo update-grub
Executing sensors
in the terminal should show your fans' RPMs now. It may be the case that not every fan for your machine is being shown - for my machine, none of the ASST_FANs are shown.
Perhaps I could solve this issue by making a configuration for your mobo, as described here, but I am happy with the information I have been able to get with the adjustment to the GRUB configuration.
Solution 2
I think sensors-detect is what is not recognizing the chip. After reviewing nct6775.c again, it should treat it as a nct6798d.
Add the following to the GRUB_CMDLINE_LINUX_DEFAULT
variable in the /etc/default/grub
file: acpi_enforce_resources=lax
then rebuild the grub config grub-mkconfig -o /boot/grub/grub.cfg
and reboot. sensors-detect
may detect it after that, it may not.
It should be as simple as modprobe nct6775
to get something to show up in sensors
once the grub change is working. If that seems to be working, manually add it to /etc/modules
to persist the change. You may also need to edit /etc/sensors3.conf
to get all correct sensors output.
There is an example Here for nct6791d, it may work, you may need to look for a nct6798d version for sensors3.conf.
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AvyWam
Updated on September 18, 2022Comments
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AvyWam over 1 year
I use Ubuntu 18.04.2, I installed lm-sensors and what it gives when I command
sensors
in the terminal:(base) avy@avy-Moi:~$ sensors asus-isa-0000 Adapter: ISA adapter cpu_fan: 0 RPM acpitz-virtual-0 Adapter: Virtual device temp1: +27.8°C (crit = +119.0°C) nouveau-pci-0100 Adapter: PCI adapter fan1: 0 RPM temp1: +35.0°C (high = +95.0°C, hyst = +3.0°C) (crit = +105.0°C, hyst = +5.0°C) (emerg = +135.0°C, hyst = +5.0°C) coretemp-isa-0000 Adapter: ISA adapter Package id 0: +27.0°C (high = +82.0°C, crit = +100.0°C) Core 0: +26.0°C (high = +82.0°C, crit = +100.0°C) Core 1: +26.0°C (high = +82.0°C, crit = +100.0°C) Core 2: +27.0°C (high = +82.0°C, crit = +100.0°C) Core 3: +27.0°C (high = +82.0°C, crit = +100.0°C) Core 4: +25.0°C (high = +82.0°C, crit = +100.0°C) Core 5: +27.0°C (high = +82.0°C, crit = +100.0°C)
But my fans are not appearing, and I have 4. 3 only for the box itself and connected to the motherboard, 1 for the watercooling device which is also connected to the motherboard.
Even with fancontrol:
(base) avy@avy-Moi:~$ sudo pwmconfig # pwmconfig revision 6243 (2014-03-20) This program will search your sensors for pulse width modulation (pwm) controls, and test each one to see if it controls a fan on your motherboard. Note that many motherboards do not have pwm circuitry installed, even if your sensor chip supports pwm. We will attempt to briefly stop each fan using the pwm controls. The program will attempt to restore each fan to full speed after testing. However, it is ** very important ** that you physically verify that the fans have been to full speed after the program has completed. Found the following devices: hwmon0 is acpitz hwmon1 is coretemp hwmon2 is asus hwmon3 is nouveau Found the following PWM controls: hwmon3/pwm1 current value: 0 hwmon3/pwm1 is currently setup for automatic speed control. In general, automatic mode is preferred over manual mode, as it is more efficient and it reacts faster. Are you sure that you want to setup this output for manual control? (n) y Giving the fans some time to reach full speed... Found the following fan sensors: hwmon2/fan1_input current speed: 0 ... skipping! hwmon3/fan1_input current speed: 0 ... skipping! There are no working fan sensors, all readings are 0. Make sure you have a 3-wire fan connected. You may also need to increase the fan divisors. See doc/fan-divisors for more information.
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rtaft almost 5 yearsWhat motherboard model do you have?
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AvyWam almost 5 years@rtaft Asus tuf z390 pro gaming
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rtaft almost 5 yearsAre you able to see the Nuvoton chip on the board? What is the model number of that chip? I'm having a hard time finding it online, something like NCT6798D.
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rtaft almost 5 yearsDid
sensors-detect
see a Nuvoton chip? -
AvyWam almost 5 yearsWhile launching
sudo sensors-detect
it givesTrying family VIA/Winbond/Nuvoton/Fintek... Yes Found unknown chip with ID 0xd42b (logical device B has address 0x290, could be sensors)
is that the kind of information you wanted? -
rtaft almost 5 yearsYea, that's it, I see that ID likely belongs to a flavor of NCT6796D or later, but it doesn't know what driver to use. It should use the nct6775 driver, but I don't see 0xd42b in the source code for nct6775.c yet, it goes up to 0xd429. I expect eventually it will get updated, or you could try to find who is currently maintaining this and work with them, or try to modify and build the driver yourself.
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AvyWam almost 5 yearsI use Freon and it is clearly said in its doc that lm-sensors is compulsory. So it clearly means if lm-sensors does not detect correctly, freon will not too.
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AvyWam almost 5 yearsThat's a great idea because I see it works for other people, unfortunately not for me. lm-sensors configs is great too but there is no available for my motherboard asus tuf z390.
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gorgeous.sideburns almost 5 years@AvyWam The only thing I can think of is to run
sensors-detect
to get information on the motherboard, but I'm guessing you already tried this. -
AvyWam almost 5 yearsIf to say
yes
to all scan proposed bysensors-detect
get the information on the motherboard, we can say I tried. If this not what you expected tell me. -
Marc almost 5 yearsTested this with a fresh Ubuntu 18.04.2-LTS desktop install.
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AvyWam almost 5 yearsTried, and does not work, that's not a matter of fresh Ubuntu installed.