'sensors -j' and "ERROR: Can't get value of subfeature in0_input: Can't read"

[Emanuel Berg]

sensors(1) and in particular the command 'sensors -j' now
reports

ERROR: Can't get value of subfeature in0_input: Can't read
ERROR: Can't get value of subfeature in1_input: Can't read

for the CPU and GPU temperatures.

This previously worked so I don't know why it doesn't all of
a sudden. Some sysfs driver issue? Or hardware
malfunction? Unlikely?

Don't really know what "I changed" for this to happen, since
I didn't use the command for some time and possibly quite
a few things might have happened since then. But I remember
well that it worked at some point.

Here is what strace says:

https://dataswamp.org/~incal/error/sensors-j.txt

TIA

--
underground experts united
https://dataswamp.org/~incal

[Dan Ritter]

Emanuel Berg wrote:
> sensors(1) and in particular the command 'sensors -j' now
> reports
>
> ERROR: Can't get value of subfeature in0_input: Can't read
> ERROR: Can't get value of subfeature in1_input: Can't read
>
> for the CPU and GPU temperatures.
>
> This previously worked so I don't know why it doesn't all of
> a sudden. Some sysfs driver issue? Or hardware
> malfunction? Unlikely?

In general, the first thing you should try is running
sensors-detect again, as root.

It is possible that your kernel is not loading some particular
sensor module which would be recommended by sensors-detect.

Depending on the hardware, there can also be BIOS or equivalent
features which turn on or off various sensors.

-dsr-