Date: Tue, 20 Jan 2026 18:30:50 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 292615] cpufreq changes causes AMD 4750U to run 11x slower Message-ID: <bug-292615-227@https.bugs.freebsd.org/bugzilla/>
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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: bugs@FreeBSD.org Reporter: cracauer@cons.org 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 -- You are receiving this mail because: You are the assignee for the bug.home | help
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