Re: [PATCH] reinstate mac rtc

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On Sat, 18 Oct 2008, Kolbjørn Barmen wrote:

On Sat, 18 Oct 2008, Riccardo wrote:

I don't know "how", but with 2.2 kernels I always had a correct date 
at boot without any tricks. It is true though that with high CPU load 
we had clockskew and that we didn't save back the date and hourtime to 
the clock, thus any clock setting needed to be done from the mac side. 
A compromoise, but better than the current situation.

The clockproblem is something I stumble upon every now and then on 
various machinees - I really wish there was a kernel parameter where one 
could set a date string, then the bootloader could pass it on.

It isn't a problem if you disable the time-stamp triggered fsck and set 
the clock from the network (rdate or ntp).

Finn

Currently i use a /.timestamp file that I read from init=/sbin/init.noclock;

---
firda ~ # cat  /sbin/init.noclock
#! /bin/bash
if test $(/bin/date +%Y) -lt 2008 ; then
        /bin/date -s "1970-01-01 + $(($(/bin/stat -c %X /.timestamp) +3600)) seconds"
fi
exec /sbin/init
---

I make sure the .timestamp is touched regularly and on shutdown.


This trick I now use on quadra910, an old acer laptop, gumstix ... :P

-- kolla
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