Date: Fri, 24 Jun 2005 11:40:34 -0700 From: Colin Percival <cperciva@freebsd.org> To: Michal Vanco <vanco@satro.sk> Cc: freebsd-current@freebsd.org Subject: Re: cpufreq & enhanced speedstep Message-ID: <42BC53A2.80205@freebsd.org> In-Reply-To: <42BC519E.8010309@satro.sk> References: <42BC519E.8010309@satro.sk>
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Michal Vanco wrote: > i'm trying to make cpufreq working on my laptop (Fujitsu Siemens > Lifebook 8020). I get the following in my dmesg after kldload-ing > cpufreq module: > > acpi_perf0: <ACPI CPU Frequency Control> on cpu0 > acpi_perf0: failed in PERF_STATUS attach > device_attach: acpi_perf0 attach returned 6 > acpi_perf0: <ACPI CPU Frequency Control> on cpu0 > acpi_perf0: failed in PERF_STATUS attach > device_attach: acpi_perf0 attach returned 6 I don't know how acpi_perf works, but I'm guessing that this means that your laptop doesn't have ACPI performance tables... > est0: <Enhanced SpeedStep Frequency Control> on cpu0 > est: CPU supports Enhanced Speedstep, but is not recognized. > est: Please update driver or contact the maintainer. > est: cpu_vendor GenuineIntel, msr 6120d2606000d26, bus_clk, 64 > device_attach: est0 attach returned 6 ... but I know exactly how est works, since I wrote it. You have a recent processor for which Intel hasn't released the frequency/voltage tables; as a result, the est driver can't support it. (Apparently the data I need is in an NDA'ed BIOS writers' guide. Can anyone convince Intel to give me a copy?) Colin Percival
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