Date: Thu, 05 Jun 2008 01:39:45 +0300 From: Evren Yurtesen <yurtesen@ispro.net> To: Andrew Snow <andrew@modulus.org> Cc: freebsd-stable@freebsd.org Subject: Re: cpufreq broken on core2duo Message-ID: <484719B1.9030508@ispro.net> In-Reply-To: <48471834.30905@modulus.org> References: <4847072E.5000709@ispro.net> <48470ED0.600@modulus.org> <484713B2.5030200@ispro.net> <48471834.30905@modulus.org>
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Andrew Snow wrote: > Evren Yurtesen wrote: > >> When you say that it doesnt work, does it give an error or? In my case >> it doesnt give any errors just says it set it but I see that nothing >> is set. > > Here's one box: > > CPU: Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz > cpu0: <ACPI CPU> on acpi0 > est0: <Enhanced SpeedStep Frequency Control> on cpu0 > est: CPU supports Enhanced Speedstep, but is not recognized. > est: cpu_vendor GenuineIntel, msr 61a49200600091a > device_attach: est0 attach returned 6 > p4tcc0: <CPU Frequency Thermal Control> on cpu0 > > > Here's another one: > CPU: Intel(R) Xeon(R) CPU E5410 @ 2.33GHz > cpu0: <ACPI CPU> on acpi0 > est0: <Enhanced SpeedStep Frequency Control> on cpu0 > est: CPU supports Enhanced Speedstep, but is not recognized. > est: cpu_vendor GenuineIntel, msr 720072006000720 > device_attach: est0 attach returned 6 > p4tcc0: <CPU Frequency Thermal Control> on cpu0 > > > > SYSCTLs On the first one: > dev.cpu.0.freq: 2786 > dev.cpu.0.freq_levels: 2786/-1 2437/-1 2089/-1 1741/-1 1393/-1 1044/-1 > 696/-1 348/-1 > > Attempting to change dev.cpu.0.freq has no effect and says: > sysctl: dev.cpu.0.freq: Invalid argument > In one of the boxes I have there is an option in the bios where I can enable Intel Enhanced SpeedStep Technology. If I enable this to disabled in the bios then I get the same results as you are seeing. If I enable this in the bios then I get no errors but the processor speed doesnt change according to chkfreq from acpi_ppc http://www.spa.is.uec.ac.jp/~nfukuda/software/ Did you check the bios for this option? Another thing is that when I enable it from bios the cpufreq finds the processor to be 1500mhz (3000mhz in reality). You said you have an Athlon X2 box. Did you download http://www.spa.is.uec.ac.jp/~nfukuda/software/ and tried the chkfreq program which comes out with it to see if powerd is actually working? Because all I know is that you might be thinking that it is working but it might not be working at all. (I think acpi_ppc doesnt support dual core processors but chkfreq should give reliable results) Thanks, Evren
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