[Bug 231257] System shuts down on resume from S3 with high temperature warning

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231257

            Bug ID: 231257
           Summary: System shuts down on resume from S3 with high
                    temperature warning
           Product: Base System
           Version: CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: aliovx at gmail.com

My Thinkpad x230 running coreboot bios and FreeBSD 12-ALPHA5. If I suspend the
laptop while on ac power, then resume it, no problem at all. But when I do the
following sequence 

1) suspend laptop on AC power
2) Disconnect the AC adapter
3) Reconnect the AC adapter
4) Resume from S3

devd logs : WARNING: system temperature too high, shutting down soon!
and the laptop shuts down. It seems it is receiving  _CRT or _HOT thermal
events for some reason. The laptop is very cool and the fan is working
correctly. I've tested Debian on a separate partition, and I never encountered
the high temperature issue when resuming from suspend.

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