From owner-freebsd-questions@FreeBSD.ORG Sat Feb 1 15:38:21 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DE942B88 for ; Sat, 1 Feb 2014 15:38:21 +0000 (UTC) Received: from mail-in-04.arcor-online.net (mail-in-04.arcor-online.net [151.189.21.44]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 92D371735 for ; Sat, 1 Feb 2014 15:38:21 +0000 (UTC) Received: from mail-in-19-z2.arcor-online.net (mail-in-19-z2.arcor-online.net [151.189.8.36]) by mx.arcor.de (Postfix) with ESMTP id 81088AB04F for ; Sat, 1 Feb 2014 16:07:35 +0100 (CET) Received: from mail-in-02.arcor-online.net (mail-in-02.arcor-online.net [151.189.21.42]) by mail-in-19-z2.arcor-online.net (Postfix) with ESMTP id 825EE3F8304 for ; Sat, 1 Feb 2014 16:07:35 +0100 (CET) X-Greylist: Passed host: 92.75.209.93 X-DKIM: Sendmail DKIM Filter v2.8.2 mail-in-02.arcor-online.net DC66730190 Received: from lorvorc.mips.inka.de (dslb-092-075-209-093.pools.arcor-ip.net [92.75.209.93]) by mail-in-02.arcor-online.net (Postfix) with ESMTPS id DC66730190 for ; Sat, 1 Feb 2014 16:07:34 +0100 (CET) Received: from lorvorc.mips.inka.de (localhost [127.0.0.1]) by lorvorc.mips.inka.de (8.14.7/8.14.7) with ESMTP id s11F7VBK002760 for ; Sat, 1 Feb 2014 16:07:31 +0100 (CET) (envelope-from mailnull@lorvorc.mips.inka.de) Received: (from mailnull@localhost) by lorvorc.mips.inka.de (8.14.7/8.14.7/Submit) id s11F7VYt002759 for freebsd-questions@freebsd.org; Sat, 1 Feb 2014 16:07:31 +0100 (CET) (envelope-from mailnull) From: naddy@mips.inka.de (Christian Weisgerber) Subject: Invalid time in real time clock Date: Sat, 1 Feb 2014 15:07:31 +0000 (UTC) Message-ID: Originator: naddy@mips.inka.de (Christian Weisgerber) To: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 01 Feb 2014 15:38:21 -0000 Over the last few months I started noticing that my FreeBSD/amd64 desktop box would often come up with a date of Jan 1, 2008 after boot. Presumably the CMOS battery was dying and the motherboard picked a date from its year of manufacture. So I replaced the CR2032 battery on the motherboard and reapplied the BIOS settings that had been lost during the change. Unfortunately, I'm still greeted with atrtc0: WARNING: Battery failure indication Invalid time in real time clock. Check and reset the date immediately! Incongruously, the RTC time is actually correct. Well, off by a minute or so. Clearly the new battery is good. I guess this is more a PC question, but how do I get the RTC to indicate a valid time again? The motherboard manual (Asus) is rather silent on the whole issue of CMOS battery replacement. -- Christian "naddy" Weisgerber naddy@mips.inka.de