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Old 01-17-2008, 08:05 AM   #1
Registered: Jun 2004
Distribution: slackware 10.2.
Posts: 39

Rep: Reputation: 15
dual booting / time problem

I have this strange problem:
I am dualbooting with slackware and ubuntu studio. Whenever I boot into ubuntu, the next time I boot slackware the time shifts exactly one hour. So if it is 4 o'clock it shows 3. I usually fix it through kde, but it is a bit annoying. Any ideas? Thanks in advance.
Old 01-17-2008, 08:16 AM   #2
Registered: Oct 2006
Location: High Wycombe, Bucks, UK.
Distribution: Debian and Fedora Core in equal measure
Posts: 258

Rep: Reputation: 33
Mungo Jerry? (In the Summer Time....)

You don't say whether it's shifting forwads or backwards...and you don't say whether you have automatic summertime correction on either of the systems. I would be inclined first to go into both systems and make sure they both have the same "base" time (that is, not the "summertime-corrected" time) and both either have summertime correction on or off. Then check the time (hardware and software) at boot and shutdown on each OS. with that information, you should get some hints

Old 01-17-2008, 08:27 AM   #3
Registered: Jun 2004
Distribution: slackware 10.2.
Posts: 39

Original Poster
Rep: Reputation: 15

Wow, that was quick! It went backwards. But the solution was much simpler. I checked the box where it sets the time automatically from the public time server and all is fine. Where was I looking before posting? Thanks again.
Old 01-18-2008, 04:24 AM   #4
Registered: Oct 2007
Distribution: Slackware
Posts: 662

Rep: Reputation: 93

Can I ask about your booting process between Slackware and Ubuntu? I have just set the same thing up and was keen to see another perspective.

Old 01-18-2008, 05:13 AM   #5
Registered: Jul 2006
Location: China
Distribution: Slackware
Posts: 68

Rep: Reputation: 15
IMHO, slackware is using the local time of the CMOS on the mainboard. But Ubuntu may have changed the time of the CMOS, and displays a local time according to your time zone. The following method is from the internet, which I haven't tested:

Edit the file in Ubuntu:

Look for this line:

Change it to:

Hope it helps.
Old 01-18-2008, 05:30 AM   #6
LQ Veteran
Registered: Aug 2003
Location: Australia
Distribution: Lots ...
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I wish my Chinese was as good as your English ...
Old 01-18-2008, 08:21 PM   #7
Registered: Jul 2006
Location: China
Distribution: Slackware
Posts: 68

Rep: Reputation: 15
Thank you, syg00. :-) And I'd like to help if you want to learn Chinese.


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