Incorrect temperature reading (NSA-310)

I've just migrated my NAS-310 from some debian with kernel 3.x to Bodhi one from here. Due to some NIC issues in kernel 4.20 I'm using kernel 4.19.

I would like to control fan (by fancontrol) on my device depends on temperature. The problem is that temperatures are reported with negative values:

root@nsa310:~ # cat /sys/class/hwmon/hwmon0/device/temp1_input
-28000
root@nsa310:~ # cat /sys/class/hwmon/hwmon0/device/temp2_input
-26000
root@nsa310:~ # cat /sys/class/hwmon/hwmon0/device/temp3_input
-22000

I know that I have to divide temperature by 1000 but why it is negative? I though that maybe "-" is just added by some mistake and all I have to do is to multiply it by -1, but it is not true. When I start some process which heavily utilize CPU, the temperature increase correctly, I mean like: -22000 then -21000 then -20000 and so on.

Can I do anything by myself to correct it or it is some issue deep in the kernel?

drakulis,

> I've just migrated my NAS-310 from some debian
> with kernel 3.x to Bodhi one from
> here.
> Due to some NIC issues in kernel 4.20 I'm using
> kernel 4.19.

> Can I do anything by myself to correct it or it is
> some issue deep in the kernel?

There are 3 versions of the NSA310. Which DTB are you using? the last one has adt7476, the first 2 have sensor lm85.

Quote

-rw-rw-r-- 1 root root 2307 Jan 31 21:19 kirkwood-nsa310a.dts
-rw-r--r-- 1 root root 2869 Jan 31 21:19 kirkwood-nsa310b-lmsensor-redusbled.dts
-rw-rw-r-- 1 root root 2839 Jan 31 21:19 kirkwood-nsa310.dts

-bodhi
===========================
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bodhi's corner (buy bodhi a beer)

ah, ok. I though that those dts are for some different (newer) models.

I'm using kirkwood-nsa310.dts since I have first version of NSA-310. Will check other dts while I'm get back home and let you know. Thanks for hint!



Edited 1 time(s). Last edit at 02/28/2019 03:09AM by drakulis.

I just checked kirkwood-nsa310a.dts and kirkwood-nsa310b-lmsensor-redusbled.dts - both are working great!
I stick to kirkwood-nsa310b-lmsensor-redusbled.dts since it allows me to control more leds.

Thank you Bodhi!