From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1PCcJw-0004Xa-3I for garchives@archives.gentoo.org; Sun, 31 Oct 2010 18:07:56 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 2E721E07AA for ; Sun, 31 Oct 2010 18:07:52 +0000 (UTC) Received: from mail-ww0-f53.google.com (mail-ww0-f53.google.com [74.125.82.53]) by pigeon.gentoo.org (Postfix) with ESMTP id 322FDE07AF for ; Sun, 31 Oct 2010 17:24:28 +0000 (UTC) Received: by wwb31 with SMTP id 31so4727881wwb.10 for ; Sun, 31 Oct 2010 10:24:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:reply-to:to:subject:date :user-agent:references:in-reply-to:mime-version:content-type :content-transfer-encoding:message-id; bh=ITX1GUyoPAPB4BNWjs42dbvMn0OfPvAk/A0r+x5nmMg=; b=Q2e5qIUBDG2NrhotJTIPkPvp/Ajw4nly6APlP/SJdentPEZifSahIJNOn6cP749C4/ 7o32IRkvLIUmZRTilclH42cJ/oq6Fa435wpK/PTBv4t9LJO7kQi88tT6nxmzkfcxR6au olM7LlGYWZVpepS9uk92rYLxc0SfK2Uj66wRE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:reply-to:to:subject:date:user-agent:references:in-reply-to :mime-version:content-type:content-transfer-encoding:message-id; b=Zqg6HbRINHs5MIp7x/KcEyehynxz5+N4K+5N0JM+GNxvXs+1dQijH95elDpoujtard 2Atniz1dWvesN0sD+JViUv25bRs23SwaWem/+GqR/cgvOOJbpVx8VOBK8GHxGw9/CwYc T7jbsuN+NFVaUVCMiTJXosE7uw3oxnEZjz1wQ= Received: by 10.216.70.8 with SMTP id o8mr1570817wed.24.1288545867080; Sun, 31 Oct 2010 10:24:27 -0700 (PDT) Received: from dell_xps.localnet (230.3.169.217.in-addr.arpa [217.169.3.230]) by mx.google.com with ESMTPS id x12sm3218573weq.18.2010.10.31.10.24.25 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 31 Oct 2010 10:24:26 -0700 (PDT) From: Mick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Winter clock change did not happen Date: Sun, 31 Oct 2010 17:24:23 +0000 User-Agent: KMail/1.13.5 (Linux/2.6.34-gentoo-r12; KDE/4.4.5; x86_64; ; ) References: <201010310924.11434.michaelkintzios@gmail.com> <201010311621.51197.michaelkintzios@gmail.com> <87wroymh0b.fsf@newton.gmurray.org.uk> In-Reply-To: <87wroymh0b.fsf@newton.gmurray.org.uk> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4195515.snkNxKkiLy"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201010311724.24389.michaelkintzios@gmail.com> X-Archives-Salt: 8da759ef-1ecc-48eb-808c-23d805fc5678 X-Archives-Hash: c1c310cae8236892c3668ad10f5cc728 --nextPart4195515.snkNxKkiLy Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable On Sunday 31 October 2010 17:03:32 Graham Murray wrote: > Mick writes: > > MSWindows changed it to winter time when I eventually booted into it.=20 > > Gentoo wouldn't show the winter time until I had first booted into > > MSWindows. If the setting CLOCK=3D"local" is meant to make Gentoo use = the > > hardware clock like MSWindows does, why it did not behave the same as > > MSWindows with the DST change? >=20 > Gentoo uses the "CLOCK=3D" value when it boots. It uses this to determine > the initial system time. If you set to 'UTC' then the appropriate > timezone offset will be applied. If it is set to 'LOCAL' then Gentoo > assumes (and it has to) that the HWClock is set to the correct local > time, including the correct Daylight Saving correction. >=20 > So, if Gentoo was running at the time of the clock change then the > system time would have changed from Summer to Winter time. However, if > Gentoo was not running and you booted it this morning then it would, > legitimately, assume that HW Clock had been set to the correct local > time prior to it be booted. When you booted into MSWindows, it changed > the time on the HW Clock to be Winter time (ie it put it back 1 hour), > so that next time you booted into Gentoo the HW clock was set to the > correct local time. With CLOCK=3D"LOCAL", when you boot for the first time > after a Summer/Winter time change, Gentoo has no way to telling whether > or not something else (eg MSWindows or manually via the BIOS setup) has > already changed the HW clock to Summer/Winter time. Thank you Graham for your very detailed reply! I understand now why the=20 problem exists. I have used the registry change suggested by Nuno on Win7 = and=20 will see what gives next time DST changes. I just hope that it'll work=20 without having *both* OS shifting the clock by one hour ... The more I read this page[1] the more I am tempted to format MSWindows out = of=20 this box whether the warranty is still valid or not! [1] http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html =2D-=20 Regards, Mick --nextPart4195515.snkNxKkiLy Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEABECAAYFAkzNpkgACgkQVTDTR3kpaLaHswCfTgQw/nGqdzqFVkvPgjfBTLvT n1UAn21wLXoklSl3EDnRGKL91G5QYoas =vQ37 -----END PGP SIGNATURE----- --nextPart4195515.snkNxKkiLy--