From owner-freebsd-questions Mon Jan 20 8:51:28 2003 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7AF9F37B401 for ; Mon, 20 Jan 2003 08:51:26 -0800 (PST) Received: from sage-american.com (adsl-65-71-135-139.dsl.crchtx.swbell.net [65.71.135.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8D28B43F3F for ; Mon, 20 Jan 2003 08:51:24 -0800 (PST) (envelope-from jackstone@sage-one.net) Received: from sagea (sagea.sage-american [192.168.0.3]) by sage-american.com (8.12.6/8.12.6) with SMTP id h0KGlNJ7050230; Mon, 20 Jan 2003 10:47:24 -0600 (CST) (envelope-from jackstone@sage-one.net) Message-Id: <3.0.5.32.20030120104729.011becd0@mail.sage-one.net> X-Sender: jackstone@mail.sage-one.net X-Mailer: QUALCOMM Windows Eudora Pro Version 3.0.5 (32) Date: Mon, 20 Jan 2003 10:47:29 -0600 To: Mike Meyer From: "Jack L. Stone" Subject: Re: Shutdown for APC Back-UPS 350 CS Cc: Per olof Ljungmark , Mark , freebsd-questions@FreeBSD.ORG In-Reply-To: <15916.4730.203618.74993@guru.mired.org> References: <3.0.5.32.20030119192238.011becd0@mail.sage-one.net> <3.0.5.32.20030119185811.011becd0@mail.sage-one.net> <3.0.5.32.20030119192238.011becd0@mail.sage-one.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" X-Spam-Status: No, hits=-1.0 required=4.5 tests=IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES,SPAM_PHRASE_03_05 version=2.43-jlsrules1 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG At 09:15 AM 1.20.2003 -0600, Mike Meyer wrote: >In <3.0.5.32.20030119192238.011becd0@mail.sage-one.net>, Jack L. Stone typed: >> At 02:05 AM 1.20.2003 +0100, Per olof Ljungmark wrote: >> I have been asking WHY have a cable with a dumb UPS for a long time and yet >> to get a good answer. I have tested with instruments the pins on those >> cables and very little to nothing found in a way of a signal. If you go to >> that apcupsd URL and did down you will find all (most) of the cables and it >> also explains them. SmartUPSes -- yes -- okay and will work with the cable. >> The computer may sense the dumb UPS -- BUT, will not communicate about >> shutdown and other critical info. If I'm wrong, then let me know.... I >> spent a lot of time falling for the "cable" bit. > >Even a "dumb" UPS communicates with the machine - with the right >cable. The computer gets three signals: On battery power, off battery >power, and almost out of battery. The computer can send one signal to >the UPS, telling it to turn off and stay off. The idea is that you use >the last signal from the UPS to initiate a shutdown, and the last >thing you do as you shut down is tell the UPS to go off and stay off. > >I have as yet to figure out how to get FreeBSD to signal the UPS to >shut down in a safe way. Anyone else worked on this one? Maybe in 5.0? > > -- >Mike Meyer http://www.mired.org/consulting.html >Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. > Let me clarify that I did not coin the classification "smartUPSes" and "dumbUPSes", but suffice it to say that anyone who buys a UPS without the ability to fully communicate as does the ones designated as "SmartUPS" (or SmartPro... too?) should not expect the results of one. There are two classes - "smart" and "dumb" as far as I know. So, before buying and one wants to have full bi-directional functionality, make sure it has the capability. Don't just go by "it has a cable" and let the cable fool you otherwise. Unfortunately, I have never seen a box that explained this on the outside or even the inside of a "dumb" one -- with cable. Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net jackstone@sage-one.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message