Arch Linux

Evils

Member

Registered: 2015-05-01

Posts: 8

[Solved] Dell XPS 8940 showing stuck temperature w/ lm_sensors

I've been running the machine mentioned in the title as a server for ~18 months and only recently started to track the temperatures with `sensors`.

Now looking at the output of sensors, I get a sensor part called dell_smm-isa-0000 that has two fans and 8 (temp1 through 8) temperature sensors. Generally I would have thought that's my CPU, but the CPU is separately reported as coretemp-isa-0000 with distinct different temperature.

Here comes my problem: The temp8 of the dell_smm-isa-0000 constantly reports 126C - way too high obviously and I can't figure out what temp8 of this device would be.

Here's the full output for the device

dell_smm-isa-0000
Adapter: ISA adapter
fan1:         816 RPM  (min =    0 RPM, max = 3230 RPM)
fan2:         999 RPM  (min =    0 RPM, max = 4050 RPM)
temp1:        +52.0°C  
temp2:        +42.0°C  
temp4:        +33.0°C  
temp5:        +45.0°C  
temp6:        +36.0°C  
temp7:        +30.0°C  
temp8:       +126.0°C  

Before I start wasting more time chasing this - what could this be and how can I resolve these values to human readable values?

Thanks!

Last edited by Evils (2023-01-06 01:54:34)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,672

Re: [Solved] Dell XPS 8940 showing stuck temperature w/ lm_sensors

Some of these sensors simply show "limits" so if that temp were to be reached for any part then the system needs to shut down and the like and they are not expected to change or give you readings. You'd probably need to look at a detailed spec sheet or so to know what exactly which value represents.

Evils

Member

Registered: 2015-05-01

Posts: 8

Re: [Solved] Dell XPS 8940 showing stuck temperature w/ lm_sensors

Some of these sensors simply show "limits" so if that temp were to be reached for any part then the system needs to shut down and the like and they are not expected to change or give you readings. You'd probably need to look at a detailed spec sheet or so to know what exactly which value represents.

That makes a ton of sense! Thank you!