Laptop shuts down soon when I close the lid, related to undervolting?

[Mackie512]

Around the time I started to undervolt the CPU of my Lenovo Yoga S740 using Intel XTU, the laptop shuts down after about 30 seconds when I close the lid. In the power management settings it says it should go into sleep mode when I close it. It's at -0.100V and it passed the stress test.

[AlHill]

Undervolting is no longer allowed, as it is a security risk.

https://securityboulevard.com/2019/12/plundervolt-a-new-intel-processor-undervolting-vulnerability/

And, unless your processor is an X or K processor, XTU does not support it.

So the Intel support engineers can have more information about your system, Download, run, and save the results of this utility as a text file:
https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility

Then ATTACH the text file using the instructions under the reply window ( Drag and drop here or browse files to attach ).