From owner-freebsd-acpi@FreeBSD.ORG Thu Apr 2 14:51:26 2009 Return-Path: Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 45F901065710 for ; Thu, 2 Apr 2009 14:51:26 +0000 (UTC) (envelope-from pldrouin@pldrouin.net) Received: from smtp.cyberfingers.net (smtp.cyberfingers.net [198.177.254.227]) by mx1.freebsd.org (Postfix) with ESMTP id 1E3E68FC18 for ; Thu, 2 Apr 2009 14:51:25 +0000 (UTC) (envelope-from pldrouin@pldrouin.net) Received: from mdaemon.pldrouin.net (pldrouinlap-pc.physics.carleton.ca [134.117.23.170]) by smtp.cyberfingers.net (Postfix) with ESMTP id 45160AB6C12; Thu, 2 Apr 2009 10:51:25 -0400 (EDT) Message-ID: <49D4D0EA.1050108@pldrouin.net> Date: Thu, 02 Apr 2009 10:51:22 -0400 From: Pierre-Luc Drouin User-Agent: Thunderbird 2.0.0.21 (X11/20090321) MIME-Version: 1.0 To: John Baldwin References: <20090402033543.43DDD1CC0B@ptavv.es.net> <200904020908.00723.jhb@freebsd.org> In-Reply-To: <200904020908.00723.jhb@freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-acpi@freebsd.org Subject: Re: Wrong dev.cpu.0.freq_levels values X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Apr 2009 14:51:26 -0000 John Baldwin wrote: > On Wednesday 01 April 2009 11:35:43 pm Kevin Oberman wrote: > >>> Date: Wed, 01 Apr 2009 23:16:13 -0400 >>> From: Pierre-Luc Drouin >>> Sender: owner-freebsd-acpi@freebsd.org >>> >>> I tried disabling both p4tcc and acpi_throttle by putting the following >>> in /boot/device.hints: >>> hint.p4tcc.0.disabled="1" >>> hint.acpi_throttle.0.disabled="1" >>> >>> It reduced the number of levels, but I still don't have a level 2000 as >>> I used to get: >>> dev.cpu.0.freq: 1500 >>> dev.cpu.0.freq_levels: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>> dev.est.0.%desc: Enhanced SpeedStep Frequency Control >>> dev.est.0.freq_settings: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>> >>> Pierre-Luc Drouin >>> >>> Nate Lawson wrote: >>> >>>> Pierre-Luc Drouin wrote: >>>> >>>> >>>>> Hello, >>>>> >>>>> I have noticed that FreeBSD gets the wrong CPU frequency levels for my >>>>> Pentium M 2GHz. It used to work correctly with older versions of >>>>> FreeBSD, but I noticed that this was not working properly when I >>>>> installed 7.1 and this is still not working with -stable: >>>>> >>>>> >>>>> >>>> >>>> >>>>> dev.cpu.0.freq: 1500 >>>>> dev.cpu.0.freq_levels: 1500/-1 1312/-1 1200/-1 1050/-1 1000/-1 875/-1 >>>>> 800/-1 700/-1 600/-1 525/-1 450/-1 375/-1 300/-1 225/-1 150/-1 75/-1 >>>>> dev.est.0.%desc: Enhanced SpeedStep Frequency Control >>>>> dev.est.0.freq_settings: 1500/-1 1200/-1 1000/-1 800/-1 600/-1 >>>>> >>>>> Is there a way to fix this? >>>>> >>>>> >>>> There's nothing wrong. You just got more levels using p4tcc (another >>>> cpufreq device). So use it as-is, or disable the p4tcc driver and >>>> acpi_throttle drivers. >>>> >>>> >> There is a problem, of course. I had the same issue with my 2GHz Pentium >> M. It was easy to fix, but totally counter-intuitive. >> >> Build your kernel without "device cpufreq" and it will all work >> fine. Here is what I see without CPUFREQ: >> dev.cpu.0.freq_levels: 2000/27000 1750/23625 1600/22600 1400/19775 >> > 1333/19666 1166/17207 1066/16733 932/14641 800/13800 700/12075 600/10350 > 500/8625 400/6900 300/5175 200/3450 100/1725 > > Hmm, that means one of the cpufreq drivers is busted I think. Can you try > disabling all of them to see which one is the problem (est perhaps?) Also, > can you show the 'devinfo' output for your cpu0 device (and its child > devices) in the cpufreq and non-cpufreq cases? > > est0 seems to be the problem. When I have the cpufreq driver in my kernel, that I disable est0 and that I leave p4tcc0 and acpi_throttle0 enabled, the output from sysctl is right. If I disable p4tcc0 and acpi_throttle0 and that I leave est0 enabled, the highest level is 1500 rather than 2000. Here is the output from devinfo that concerns cpu0: cpu0 pnpinfo _HID=none _UID=0 at handle=\_PR_.CPU0 ACPI I/O ports: 0x1014 0x1015 0x1016 est0 p4tcc0 acpi_perf0 acpi_throttle0 cpufreq0 Pierre-Luc Drouin