Date: Sat, 24 Jan 2026 10:06:15 +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-JDI0wzUkVZ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-292615-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292615 --- Comment #22 from ShengYi Hung <aokblast@FreeBSD.org> --- (In reply to Olivier Certner from comment #20) Sorry for the late reply since I am a career soldier currently... Cy's case is easier to solve. We can read the Lowest Frequency and Nominal Frequency in ACPI _CPC object then do interpolation for other Frequency (High and Guaranteed). When getting all of the frequency and cppc value, we can make cpufreq mutable and allow to powerd(8) to modify the value in both amd's and intel's case. I have a WIP generic CPPC (fully relies on the _CPC object) driver which can be used in aarch64 and amd64 platforms but some ACPI features are missing in FreeBSD. I am still working on this. For Martin's case, could you please provide the result of acpidump -dt? There might be some hints in the _CPC object. -- You are receiving this mail because: You are the assignee for the bug.home | help
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