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Running 20.04lts on gateway e-475m laptop, dual boot with win7, and 'use internet to set clock' is OFF for both OS's (reason will become obvious...), and my bios clock is set for local time.

For win7 I have time zone set to eastern and all is 'normal', but if ubuntu is set for eastern, it takes that time, and sets ubuntu clock 4 hours ahead on boot (ie 7am becomes 11am) for some reason (again, even though ubuntu is set for eastern time zone), and then if I reset it in ubuntu to local time, it then changes the bios clock so win7 gets messed up when I dual boot back to win7.

My work around is to tell ubuntu it is at UTC, not eastern, and it leaves the darn bios clock as it is... but why this 'glitch'?!? Is there a real 'fix'...

ANSWER: run "sudo timedatectl set-local-rtc 1" and all is fine! (just why all the ruckus?)

The MAJOR
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1 Answers1

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My workaround is to set correct timezones on both systems and then install reliable NTP client from Meinberg inside the Windows.

Then reboot to Ubuntu and enjoy. It will set its time from NTP on start.

This method does not require any additional steps. Having correct precise network time on machines is essential for all devices.

N0rbert
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