From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt To: Ethan Blanton , Subject: Re: Clock drift on an iBook2 Date: Tue, 17 Jul 2001 18:50:32 +0200 Message-Id: <20010717165032.5490@smtp.adsl.oleane.com> In-Reply-To: <20010717102730.B22214@localhost.localdomain> References: <20010717102730.B22214@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: >I have a new iBook2 and I'm having *severe* clock drift problems -- on >the order of several seconds gained per minute. I'd like to get this >taken care of, and it seems to be a linux problem as OSX appears to >have a stable clock. > >I'm running BenH's 2.4.7-pre6 right now, but I also saw it on 2.4.6. > >Is this a known problem? If not, what can I do to help get this fixed? >Ethan Are you using MOL or do you experience this with nothing special running ? Do you have the same issue if you disable powersave_nap (/proc/sys/ kernel/powersave_nap) ? The TB is calibrated using the VIA, if we don't have a correct VIA frequency or if the calibration routine is slightly off, that may also explain the problem. Ben. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/