Re: Clock Problem?

On 2007-04-25 18:52, Paul J Gans wrote:
birre <spamtrap@xxxxxxxxxxxx> wrote:
On 2007-04-24 18:07, Unruh wrote:
birre <spamtrap@xxxxxxxxxxxx> writes:

He can configure ntp, and don't need to use the hardware clock at all.
If his system gains a sec per sec ( Ie runs a factor of 2 too fsst) ntp can
do nothing It cannot compensate for so gross an error.



/birre

Yeah , very true , but this is not the same clock.

The time is updated using a counter in the kernel, not by reading the
hwclock.

So, what is the problem, a drifting hwclock, or the system ticks ?
Maybe something added something faulty in /etc/adjtime .

Well, we are trying to find out. So far he's reported that
Ubuntu has the same problem. He also has windows available
and I've asked him to see if Windows handles the time correctly.

If it does not, then it is almost certainly the motherboard.
And that would be my guess.

If Windows *does* handle the clock correctly, then there is
something faulty, probably in /etc/adjtime as you sugget.

We will see.


I have seen this problem with suse as a vmware client when windows is the
host for vmware, and I don't remember what the problem was, if it even was found.

Unless there is a file that got corrupted by changing the clock by hand
or with ntpdate while ntp was running, it looks as a combination of
some hardware and something in this kernel.

Maybe someone like Alan Cox can find it, but I'm lost, since everything that
com to my mind is already tested here.

Even the clock=pit boot option, but I think this was only when running
the 32 bits smp kernel on amd64 dual core , and maybe only in suse 10.1
But in this case, the clock was a minor problem, since most other things
was going crazy.

/birre
.

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