No, normally it's below 60C.

I can get it to 80C (and shutdown) when the AC is plugged in and
charging the battery and I load my CPU a lot at the same time.

Usually it means a video conference with several people and charging at
the same time. A little bit of sun also helps.

So I guess the cooling mechanism here is not adequate, if thermald tries
to do anything about it at all. I am attaching thermald debug log, if it
helps.

Also, I usually can avoid the shutdown if I manually reduce CPU target
temperature to 70C using this tool: https://github.com/erpalma/throttled
This results in very heavy CPU throttling well below 1GHz.


** Attachment added: "thermald debug log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1873083/+attachment/5355770/+files/thermald.txt

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Title:
  Lenovo Yoga C940 frequently does thermal shutdown

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