Ubuntu 22.04.2, Asus B85M-G, +5V and +12V are not shown by "sensors" command

Bug #2012129 reported by Wladimir Mutel

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This bug affects 1 person
Affects Status Importance Assigned to Milestone
lm-sensors (Ubuntu)

Bug Description

Dear maintainers,

I tried to test a different PSU in my system and noticed some instabilities in Linux&hardware operation with it.
I looked into "sensors" printout and found there are no +5V and +12V levels reported.
In UEFI BIOS HW monitoring section I clearly see +12.01..+12.04V and +4.92..+4.96V but don't see them from the running Linux.
"sensors-detect" propose that I load "coretemp" and "nct6775" modules without parameters, which I made to be loaded on boot.
"sensors" shows adapters nct6791-isa-0290 with lots of voltages, temps and fan speeds, acpitz-acpi-0 with 2 temps around +27..29°C, and coretemp-isa-0000 with 1 package temp. and 2 core temps, all around +34..36°C
From some directions I found on the Internet, people recommend explicit configuration of in1 and in4 inputs for nct6791-isa-0290 which are supposed to report +5V and +12V for this chip, but I am not sure I could do this by myself without interaction with someone more experienced.
I looked into text files under /sys/devices/platform/nct6775* but for in1 and in4 _input values I found only integer number 1024 which does not look like a real measurement.

Please if possible help me to resolve this problem. Thank you in advance.

Wladimir Mutel (mwg)
description: updated
Revision history for this message
Sergio Durigan Junior (sergiodj) wrote :

Thank you for taking the time to file a bug report.

It seems to me that you're describing a configuration issue in your system, and would like some help figuring out how to properly configure sensors to properly display what you want. This does not look like a bug report to me.

Since it seems likely to me that this is a local configuration problem,
rather than a bug in Ubuntu, I am marking this bug as 'Incomplete'.

However, if you believe that this is really a bug in Ubuntu, then we would
be grateful if you would provide a more complete description of the problem
with steps to reproduce, explain why you believe this is a bug in Ubuntu
rather than a problem specific to your system, and then change the bug
status back to "New".

For local configuration issues, you can find assistance here:

Changed in lm-sensors (Ubuntu):
status: New → Incomplete
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