Along with _PSV, _HOT, and _CRT, ACPI supports the _CR3 threshold which specifies a temperature above which a system should transition to the S3 standby state. On FreeBSD, this is more useful than _HOT, which specifies the S4 transition threshold temperature (since FreeBSD does not generally support the S4 state), or, in many cases, _CRT, since after transitioning to S3 the system can cool and then be resumed. Reviewed by: jhb, bcr (manpages) Relnotes: yes Differential Revision: https://reviews.freebsd.org/D35980 |
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