Bug#159037: general: Time Problem
On 31 Aug 2002, Daniel Schepler wrote:
> "Matt Filizzi" <fizz@beyond.hjsoft.com> writes:
>
> > Package: general
> > Version: N/A; reported 2002-08-31
> > Severity: normal
> > Tags: sid
> >
> > I don't know what is causing this problem but all I know is that I have
> > narrowed it down to being caused either by a package or by the install
> > system. I installed from the woody install disks then upgraded to sid.
> > What happenes is that the time jumps ahead then back, eg (this is output
> > from "while true; do date;done"
> >
> > Sat Aug 31 19:07:26 EDT 2002
> > Sat Aug 31 19:07:26 EDT 2002
> > Sat Aug 31 19:07:26 EDT 2002
> > Sat Aug 31 19:07:26 EDT 2002
> > Sat Aug 31 20:19:01 EDT 2002
> > Sat Aug 31 20:19:01 EDT 2002
> > Sat Aug 31 20:19:01 EDT 2002
> > Sat Aug 31 19:07:27 EDT 2002
> > Sat Aug 31 19:07:27 EDT 2002
> >
> > The only thing I did differently then previous installs was I told the
> > installer that it could set the bios go UTC. The only time it is really
> > noticable is when in X, the screensaver kicks in when it jumps.
>
> I can confirm that this bug happens on my system as well, even as far
> as the time jump being approximately 71 minutes. I had ntpd
> installed. I've recently tried disabling ntpd, but since it happens
> very sporadically for me, I can't tell yet whether disabling that
> works -- it sometimes takes on the order of several weeks of uptime
> before it happens.
>
> My bios clock is also set to UTC. I didn't even think of that as a
> possible cause before, but I don't see how this could be the cause
> since, as far as I know, the bios clock is only read or set at boot
> time or shutdown.
I don't know if this is related, but some of us in New Zealand noticed the
system clock getting very slow. After some investigation we narrowed it
down to a bug in the 2.4 kernel. The slowdown happened in my case when
CDs were being burnt so it seems to be related to some real-time critical
operations. I just remembered to run "hwclock -s" as I have burnt some
CDs earlier today, the hardware clock keeps good time.
Phil.
--
Philip Charles; 39a Paterson Street, Abbotsford, Dunedin, New Zealand
+64 3 488 2818 Fax +64 3 488 2875 Mobile 025 267 9420
philipc@copyleft.co.nz - preferred. philipc@debian.org
I sell GNU/Linux & GNU/Hurd CDs. See http://www.copyleft.co.nz
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