From owner-freebsd-acpi@FreeBSD.ORG Tue Apr 20 17:56:21 2010 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 07EC61065672 for ; Tue, 20 Apr 2010 17:56:21 +0000 (UTC) (envelope-from andrnils@gmail.com) Received: from mail-bw0-f228.google.com (mail-bw0-f228.google.com [209.85.218.228]) by mx1.freebsd.org (Postfix) with ESMTP id 8686E8FC13 for ; Tue, 20 Apr 2010 17:56:19 +0000 (UTC) Received: by bwz28 with SMTP id 28so7328129bwz.14 for ; Tue, 20 Apr 2010 10:56:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type; bh=uwZxSG8YBzJaQYu9psvCSX9YFP4qIqjt2+N1HRj75to=; b=AvmDKlSMTg/Lzgpm6Ft2R1Oe0fltzhke/fWOkAQ0DTtkNnLrua/yX6nwaOf8WiIVBB xnH6KCgr6zxYAG7FAcRUEBghgUPMg/9TovvsgUZKY4aQcPrIzs5Yg/0C7CyM3NHhIEDp X8tTQlipSMpm1DkmMBgwI0dSKRmfHXGHcBUUE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=E4BqyvbU6C8ThDmwfPvEe8PRThv9sYTGNKS/oCnFyubzvd25Zn5hh2SdnEzFBW+PbF rQ+7xmxWtLIG0d4jnyA/0NjC+mzOx7zI7tq/O3y/b55Uf0rkRbEiMxsqS7QyJPJYWTdZ AxkYzX4bZ9XAMtcWrkT4r5qv3+SzgJ7ah/5Vk= MIME-Version: 1.0 Received: by 10.204.60.211 with HTTP; Tue, 20 Apr 2010 10:56:19 -0700 (PDT) In-Reply-To: <201004190834.08800.jhb@freebsd.org> References: <201004190834.08800.jhb@freebsd.org> Date: Tue, 20 Apr 2010 17:56:19 +0000 Received: by 10.204.38.82 with SMTP id a18mr2507201bke.126.1271786179212; Tue, 20 Apr 2010 10:56:19 -0700 (PDT) Message-ID: From: Andreas Nilsson To: John Baldwin Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-acpi@freebsd.org Subject: Re: C-states on core-i7m 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: Tue, 20 Apr 2010 17:56:21 -0000 On Mon, Apr 19, 2010 at 12:34 PM, John Baldwin wrote: > On Sunday 18 April 2010 4:52:33 am Andreas Nilsson wrote: > > Hello, > > > > my new laptop has a core-i7 620m and I expected it to have support for > > C3-state. > > sysctl dev.cpu.0 > > dev.cpu.0.%desc: ACPI CPU > > dev.cpu.0.%driver: cpu > > dev.cpu.0.%location: handle=\_PR_.CPU0 > > dev.cpu.0.%pnpinfo: _HID=none _UID=0 > > dev.cpu.0.%parent: acpi0 > > dev.cpu.0.freq: 149 > > dev.cpu.0.freq_levels: 2667/25000 2533/23710 2399/22465 2266/21243 > > 2133/20027 1999/18852 1866/17700 1733/16571 1599/15478 1466/14395 > 1333/13334 > > 1199/12297 1049/10759 899/9222 749/7685 599/6148 449/4611 299/3074 > 149/1537 > > dev.cpu.0.cx_supported: C1/3 C2/245 > > dev.cpu.0.cx_lowest: C2 > > dev.cpu.0.cx_usage: 100.00% 0.00% last 500us > > > > I've never seen it acutally use even C2. Are lower C-states not supported > > yet for the core i7 cpus? > > I have used C3 on i7 CPUs. I would check your BIOS options perhaps. Note > that in the BIOS what shows up as "C3" to ACPI may be called "C6/C7". > > -- > John Baldwin > Ok, thanks. I'll blame it on the bios then and hope that the next update fixes those issues :) I just hope that Lenovo ships an update soon. andrnils