https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292615
Bug ID: 292615
Summary: cpufreq changes causes AMD 4750U to run 11x slower
Product: Base System
Version: 16.0-CURRENT
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Commit to cpufreq 3e6e4e4a0d42fa24f3b2a1c087e9ad25f9594081 "hwpstate: add CPPC
support for pstate driver on AMD"
causes my laptop to run at 399 MHz, about 11 times slower than before the
commit.
It is a Thinkpad T1 gen 1 AMD Ryzen 7 PRO 4750U with Radeon Graphics
(1696.91-MHz K8-class CPU).
Dmesg from a kernel before that commit:
https://www.cons.org/goodkernel.dmesg
Dmesg from a kernel after that commit:
https://www.cons.org/badkernel.dmesg
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