Ubuntu

The clocks in Win 7 Pro and 12.04LTS switch after reboot

Asked by Scott Nelson

Why do the clocks in Windows 7 Pro and 12.04 LTS (both 64 bit) change after rebooting? I know that Win reads the BIOS clock as local time, does Ubuntu change local time to UTC? How can I resolve this "time warp?"

I hadn't noticed this before but the clock on my Ubuntu desktop starts at a different time, then updates to the correct time after startup finalizes. When I reboot to start Windows 7(Prox64, Dell OEM) the clock in this desktop advances 5 hours. Time zones on each OS are properly set, mobo battery is good, BIOS clock setting never changes, and occasionally the date also changes. Yesterday on restart the clock advanced to July 1, and the clock advanced 5 hours.

There are times that Win 7 does not change the clock. If you reboot into Windows during the same day's timeframe the clock records the proper time. This is so frustrating! How could a simple thing like a clock get so messed up?

Question information

Language:
English Edit question
Status:
Answered
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Scott Nelson (shnelson) said : 		#1

Both OS's have time zones set accurately, both are set to sync with internet time, mobo battery has been replaced with a known good fresh replacement (checked with a good battery tester), and my ASUS M4A785TD-M EVO mobo's clock is set to my local time. I recently set up Windows 7 Prox64 on a separate HDD and GRUB is fine, boot loader works well.

Revision history for this message
N1ck 7h0m4d4k15 (nicktux) said : 		#2

No , Ubuntu does not change localtime to .. anything. Maybe is something miss-configured in Ubuntu time.

Open a terminal (CTRL+ALT+T) and issue the following command

    sudo dpkg-reconfigure tzdata

Then set the correct time zone from there.

Regards
 NikTh

Revision history for this message
Scott Nelson (shnelson) said : 		#3

Well NikTH, I ran this a few days ago and things have been better. Been gone for a couple of days and will wring out the system. Thanks

Can you help with this problem?

Provide an answer of your own, or ask Scott Nelson for more information if necessary.

To post a message you must log in.