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Date: Wed, 27 Mar 2002 16:35:37 +0100 (CET)
From: Adam Johansson <macadam@madsci.se>
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To: Bernd Schubert <bernd-schubert@web.de>
cc: <linux-kernel@vger.kernel.org>
Subject: Re: time jumps
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On Wed, 27 Mar 2002, Bernd Schubert wrote:

> Hi,
>
> we have a computer here, that behaves very strange, from one second to
> another the clock changes to about 1h in the future. In the next "real"
> second the time is normal again.
> Well, I first thought that is might be a X problem, but after running a loop
> over "date", it really seems that the system clock is affected.  Then I
> thought it might be a conflict with the hardware clock, but after resetting
> it to the system time, the problem was still there.
>
> The only clock that doesn't seem to be affected is the realtime clock (at
> least not when doing a loop of cat over the proc-file).
>
> The problem is, that this time jumps cause the Xserver to enable its
> screensaver (and several other small problems).
>
> System  is: Athlon 650 on VIA board with linux-2.4.17 (unpatched)
>

The same thing happened to me on an Athlon 600 on a KM133 chipset.
I ran a vanilla 2.4.18 and after upgrading to 2.4.19 the problem never
occured again.

Hope it helps for you to!

Cheers!
/Adam @ MadSci.se

> So has anyone an idea what to do, I'm thinking about a BIOS update (but don't
> really believe that it will help). Or is it possible to patch the kernel that
> it uses the realtime clock (could anyone of you send me this patch, if it is
> possible, please??).
>
>
> Of course, I can give further information, if needed.
>
> Thanks in advance, Bernd
> -
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-=-=-=-=-=-=-=-=-=-=-=-=-
Adam Johansson
Developer @ MadSci AB
Phone: +46 (0)18 606462
ICQ: 58187935
http://www.madsci.se
-=-=-=-=-=-=-=-=-=-=-=-=-

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