From owner-freebsd-current Sun Jan 14 10:17:52 2001 Delivered-To: freebsd-current@freebsd.org Received: from hda.hda.com (host65.hda.com [63.104.68.65]) by hub.freebsd.org (Postfix) with ESMTP id E2CA937B400 for ; Sun, 14 Jan 2001 10:17:29 -0800 (PST) Received: (from dufault@localhost) by hda.hda.com (8.11.1/8.11.1) id f0EIH3F34298 for current@freebsd.org; Sun, 14 Jan 2001 13:17:03 -0500 (EST) (envelope-from dufault) From: Peter Dufault Message-Id: <200101141817.f0EIH3F34298@hda.hda.com> Subject: Re: Fan speed control sony vaio lx800 slimtop In-Reply-To: <200101121305.f0CD5kx23941@hda.hda.com> from Peter Dufault at "Jan 12, 2001 08:04:31 am" To: current@freebsd.org Date: Sun, 14 Jan 2001 13:17:02 -0500 (EST) X-Mailer: ELM [version 2.4ME+ PL61 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I'm slightly hoping that enabling an AUTO HALT mode will turn the fan down. I don't think it will, I think I will have to do some subset of what "acpiconf -s 1" does in cpu_idle but will still respond to the next clock interrupt... So my two questions are: 1. Is there an obvious subset of S1 that would be an acceptable replacement for executing HLT and nothing happening in cpu_idle, and, 2. Does anyone understand "AUTO HALT", low power mode, etc on the Pentium III? I found programs (previous message has links) to enable power saving modes on Pentia, but they set a bit in "Model Specific Register 0x12: CTR0", and the Pentium III documentation says "code that accesses registers 11H, 12H, and 13H will generate exceptions on a P6 family processor". (IA-32 Software Developer's Manual, Volume 3: System Programming Guide, Intel order number 245472, page B-25) Peter (The system is reasonably quiet now with my additional sound proofing, but I'm afraid it isn't designed to continously run what was originally an unacceptably noisy fan). -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Fail-Safe systems, Agency approval To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message