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dell / libsmbios

library for interacting with Dell SMBIOS tables
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smbios-thermal-ctl: Info: Unable to Get Thermal Information on this system #85

Closed pacho2 closed 4 years ago

pacho2 commented 4 years ago

I wanted to check fan configuration options using smbios-thermal-ctl on a Dell Inc. Inspiron 15 7000 Gaming, but it fails with:

smbios-thermal-ctl -i

Libsmbios version : 2.4.3 smbios-thermal-ctl version : 2.4.3

Print all the Available Thermal Information of your system: 

 Info: Unable to Get Thermal Information on this system

I am unsure about how to fix the problem... I have wmi module loaded and I cannot find anything special in my dmesg output as a hint of something that could be missing. I attach dmesg output

Thanks dmesg.txt

superm1 commented 4 years ago

Is fan control offered in your BIOS setup?

pacho2 commented 4 years ago

No, I tried first to control it from BIOS but I didn't find any entry for that :/

superm1 commented 4 years ago

It's possible your system doesn't support it. One more thing you can check is using Dell command: https://www.dell.com/support/article/us/en/04/sln311302/dell-command-configure?lang=en

See if it works there.

pacho2 commented 4 years ago

Sorry for the delay, I was preparing an ebuild to install it in my distribution (Gentoo)

Sadly it fails to run with: dell-2017 /opt/dell/dcc # ./cctk Error communicating with BIOS - Unable to Get DMI Information! Status = 0 bool SMBIOSPresent = 0 TableLength = 0

Unable to get BIOS tables or Unknown type encountered!!.

But I can get dmi information with dmidecode command for example, I can attach that output if you want

superm1 commented 4 years ago

Presumably you ran as root right? You might need to turn off SMM mitigations in BIOS setup if it's on for that tool to work. Might also go as Windows SMM mitigations, don't recall for sure.

pacho2 commented 4 years ago

Sure, I run as root

Regarding the mitigations, I looked and I thought I didn't see them, but I will recheck

superm1 commented 4 years ago

On an XPS notebook I have on hand, I checked in BIOS setup where it's listed. Might be same for you.

It's under "Security", then "SMM Security Mitigation" and there will be a checkbox for it.

pacho2 commented 4 years ago

I have rechecked but I don't have anything related with SMM :/

Maybe because my laptop is from 2017 and that wasn't available yet

superm1 commented 4 years ago

Yeah, if you can't change it in BIOS setup, can't change it with libsmbios, and DCC doesn't do anything, I'm gonna say your laptop probably won't support this type of control unfortunately.