[Bug 292615] cpufreq changes causes AMD 4750U to run 11x slower

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292615

--- Comment #6 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=ad9932995cf8f93143ff033712016d95b5cb7a50

commit ad9932995cf8f93143ff033712016d95b5cb7a50
Author:     Cy Schubert <cy@FreeBSD.org>
AuthorDate: 2026-01-05 04:53:51 +0000
Commit:     Cy Schubert <cy@FreeBSD.org>
CommitDate: 2026-01-22 04:36:33 +0000

    hwpstate: Add CPPC enable tunable

    The Framework 13 runs very hot the maximum frequency is possible. By
    disabling CPPC (reverting to Cool`n'Quiet 2.0) we can use powerd to
    limit the CPU frequency to 2200, thereby reducing the CPU temperature.

    Some systems may run slower with CPPC enabled. See PR/292615 for that
    bug.

    Those experiencing either of these issues may add the following to
    their loader.conf or device.hints to disable CPPC:

    machdep.hwpstate_amd_cppc_enable="0"

    PR:                     292615
    Reviewed by:            lwhsu, olce
    Differential revision:  https://reviews.freebsd.org/D54803

 sys/x86/cpufreq/hwpstate_amd.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

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