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Old 06-23-2003, 10:33 AM   #1
Registered: Jan 2003
Location: TVM,Kerala,INDIA
Distribution: Redhat 8.0
Posts: 47

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clock skew detected problem - no way to rectify it

i've got a rh 7.3 build and there seems to be a problem with my system clock,
after shutting down the system properly and then returning the next day, i find that the clock is out of sync, and then this progresses if i don't change the system clock everyday, resulting in the the date/time being completely out of range,

i noticed that when i had sendmail configured on startup, the message "clock skew detected - ... build may be incomplete "
was shown,
so i threw sendmail out (i didn't need it)
but the clock problem still persists
i tried using the date and the hwclock commands but to no avail , each time i shut it down and boot, the clock seems to remain in a standstill

is there a way to rectify it? also does anybody know how to issue the above two commands(date and hwclock) at startup?

Last edited by cyberswami; 06-23-2003 at 11:26 AM.
Old 06-23-2003, 11:07 AM   #2
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Registered: Nov 2002
Location: Durham, England
Distribution: Fedora Core 4
Posts: 1,565

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Sounds like your CMOS battery is going. It happens sometimes. You almost certainly want to replace it, but if for some reason you can't/won't you can tell the latest versions of red hat to sync to an NTP server. I have no idea if 7.3 has that feature or not.
Old 06-23-2003, 11:14 AM   #3
Registered: Jan 2003
Location: TVM,Kerala,INDIA
Distribution: Redhat 8.0
Posts: 47

Original Poster
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ok i thought about that, but an anomaly is that when i had a dual-boot machine, the other os(winnt) doesn't seem to have any problem with the time at all, how come?
now there isn't nt so i cannot verify that for sure
but i'll try the ntp server,
how do u do it in rh 8.0 (where in the menu's or control panel)

Last edited by cyberswami; 06-23-2003 at 11:17 AM.
Old 12-05-2007, 11:09 PM   #4
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Registered: Apr 2007
Location: Delhi, India
Distribution: Gentoo
Posts: 12

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I had similar problem until this morning when I could finally fix it.
my system = gentoo.

According to my understanding (correct me if i'm wrong) and particularly in case of my machine, the localtime always got modified when I booted my computer (because of different timezone than the default UTF or GMT). And in the config (/etc/conf.d/clock in my case), I wrote it to set hardware clock time = system clock @shutdown. So the time accrued over subsequent reboots.
The problem as I understood was this, and I rectified it. I mention it here because it took me great time and effort to figure it out.
Final configs were-

CLOCK="local #system clock = local. Also suggested for dual-boot
TIMEZONE="Asia/Calcutta" #replace with ur timezone
CLOCK_SYSTOHC="no" #dont set hwclock = sysclock @boot-down
#rest default

Then I had to set date manually using "date -s" and make sure the correct values of hwclock and sysclock 1st time. (it wasn't easy for me though)

and done...
Old 12-06-2007, 12:28 AM   #5
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Registered: Aug 2004
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This might be a good time to point out that RH 7.3 and 8.0 are yrs out of date and have not been supported for a long time (inc no security updates).
If at all possible, replace with a current distro eg RH Enterprise Linux, Centos (free ver of RHEL) or RH Fedora; assuming you want to stick with RH based distros.


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