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 1PCYJO-0003wx-KG for garchives@archives.gentoo.org; Sun, 31 Oct 2010 13:51:07 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0BA50E019D; Sun, 31 Oct 2010 13:50:42 +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 BF8D3E019D for ; Sun, 31 Oct 2010 13:50:41 +0000 (UTC) Received: by wwb31 with SMTP id 31so4617768wwb.10 for ; Sun, 31 Oct 2010 06:50:41 -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=k/L/NzJIbjXs5ePGS8Xd8NobcVNlbXvKELM4dmR9bOc=; b=AzP0vY686CBXilRwG1ihJFRQDUBjbvtGAFi/p3TW1pTcNYS/LY1Z8P5eA+WKq2/PNG 1OptufjrlLwtI1yPsJ5XwV3Qu5HBln3WmGWTgYOID5GLOVR8NLjFX1G0x4jgIyWTd3c5 1ZTzEz2265Tdqif+UwSzrhFMqwQSFsRucb2DM= 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=Y726h6BcWW5+TWJEIN1bu0B2T1Y3wxzPJf20R0FG/MyOTFXG5faFyIa8R37WJ04VOz ShJX8KZ48VHppv/9OFlt+GDNlF5BRDCK809xWq8lv2tzAKWCwDRVtxhTs45M8jk727Gv Asm6b+NWSqBoS1O9tuGMxaxn2cw1I30zW2i1g= Received: by 10.227.28.10 with SMTP id k10mr14169377wbc.215.1288533041125; Sun, 31 Oct 2010 06:50:41 -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 b30sm4172783wbb.16.2010.10.31.06.50.39 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 31 Oct 2010 06:50:40 -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 13:50:36 +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> <878w1eijbk.fsf@ist.utl.pt> In-Reply-To: <878w1eijbk.fsf@ist.utl.pt> 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="nextPart5380803.q7n6pXD1Di"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201010311350.37878.michaelkintzios@gmail.com> X-Archives-Salt: e5906251-3b30-4a5d-b7d7-1fbb4b999908 X-Archives-Hash: d6124b2ced517e647fcfb6edf04f007d --nextPart5380803.q7n6pXD1Di Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable On Sunday 31 October 2010 13:27:11 Nuno J. Silva wrote: > Mick writes: > > I dual boot with MSWindows and therefore have set up my /etc/conf.d/clo= ck > > to: > >=20 > > CLOCK=3D"local" > > TIMEZONE=3D"Europe/London" > > CLOCK_OPTS=3D"" > > CLOCK_SYSTOHC=3D"no" > > SRM=3D"no" > > ARC=3D"no" > >=20 > > I noticed this morning that the clock was still showing summer time (I > > rarely boot into MSWindows). >=20 > Was Linux running since before the time change? I suppose it would at > least show the right time if that was the case. If it works, you still > need CLOCK_SYSTOHC=3D"yes" if you want Linux to change the clock. >=20 > Linux has no way to know if the time change was done (nor windows), > unless the systems are syncing with other clock (NTP), so both of them > will boot up and think this "local" time is the winter time. >=20 > The systems may still register if they already did the timezone change, > so that they know what to do (that was the case with windows 98). >=20 > > I had to boot into MSWindows to check what happens there and the clock > > was showing the new winter time. After that the Linux clock was also > > showing the updated winter time. > >=20 > > Does this mean that twice a year when the clock changes I need to boot > > into MSWindows first to allow the time change to take place, or is there > > a Linux side fix for my dual boot set up? >=20 > You can write something so that Linux changes the clock, but then be > sure Windows is not set to change it. > my > A better (read "more complicated") solution would involve some sync > mechanism between both operating systems so that one can tell if the > other already changed the clock. >=20 > Unless windows now supports UTC clocks, you have to live either with > this or with an always on winter clock on windows. Thanks Nuno, this explains well why my Gentoo did not change the time - I d= o=20 not have NTP set up on it and rely on MSWindows to sync with a time server= =20 once a month or so that I boot into it for just this reason. This is a new= =20 laptop and it seems to keep the time reliably for now. In the future I may= =20 well set up NTP if I find that the time in Gentoo is drifting (enough for m= e=20 to notice). =2D-=20 Regards, Mick --nextPart5380803.q7n6pXD1Di 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) iEYEABECAAYFAkzNdC0ACgkQVTDTR3kpaLYKBwCfWrS6mmk7Ut4BGHx0LZRxZEef +UIAoO0N27UYcd7B6uu8X5YuGFl8ztJW =8Dv5 -----END PGP SIGNATURE----- --nextPart5380803.q7n6pXD1Di--