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On Sunday 31 October 2010 17:03:32 Graham Murray wrote: |
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> Mick <michaelkintzios@×××××.com> writes: |
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> > MSWindows changed it to winter time when I eventually booted into it. |
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> > Gentoo wouldn't show the winter time until I had first booted into |
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> > MSWindows. If the setting CLOCK="local" is meant to make Gentoo use the |
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> > hardware clock like MSWindows does, why it did not behave the same as |
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> > MSWindows with the DST change? |
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> |
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> Gentoo uses the "CLOCK=" value when it boots. It uses this to determine |
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> the initial system time. If you set to 'UTC' then the appropriate |
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> timezone offset will be applied. If it is set to 'LOCAL' then Gentoo |
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> assumes (and it has to) that the HWClock is set to the correct local |
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> time, including the correct Daylight Saving correction. |
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> |
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> So, if Gentoo was running at the time of the clock change then the |
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> system time would have changed from Summer to Winter time. However, if |
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> Gentoo was not running and you booted it this morning then it would, |
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> legitimately, assume that HW Clock had been set to the correct local |
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> time prior to it be booted. When you booted into MSWindows, it changed |
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> the time on the HW Clock to be Winter time (ie it put it back 1 hour), |
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> so that next time you booted into Gentoo the HW clock was set to the |
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> correct local time. With CLOCK="LOCAL", when you boot for the first time |
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> after a Summer/Winter time change, Gentoo has no way to telling whether |
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> or not something else (eg MSWindows or manually via the BIOS setup) has |
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> already changed the HW clock to Summer/Winter time. |
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|
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Thank you Graham for your very detailed reply! I understand now why the |
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problem exists. I have used the registry change suggested by Nuno on Win7 and |
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will see what gives next time DST changes. I just hope that it'll work |
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without having *both* OS shifting the clock by one hour ... |
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The more I read this page[1] the more I am tempted to format MSWindows out of |
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this box whether the warranty is still valid or not! |
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|
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[1] http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html |
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-- |
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Regards, |
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Mick |
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