On Sun, Oct 31, 2010 at 10:24 AM, Mick <michaelkintz...@gmail.com> wrote:
> On Sunday 31 October 2010 17:03:32 Graham Murray wrote: > > Mick <michaelkintz...@gmail.com> writes: > > > MSWindows changed it to winter time when I eventually booted into it. > > > Gentoo wouldn't show the winter time until I had first booted into > > > MSWindows. If the setting CLOCK="local" is meant to make Gentoo use > the > > > hardware clock like MSWindows does, why it did not behave the same as > > > MSWindows with the DST change? > > > > Gentoo uses the "CLOCK=" value when it boots. It uses this to determine > > the initial system time. If you set to 'UTC' then the appropriate > > timezone offset will be applied. If it is set to 'LOCAL' then Gentoo > > assumes (and it has to) that the HWClock is set to the correct local > > time, including the correct Daylight Saving correction. > > > > So, if Gentoo was running at the time of the clock change then the > > system time would have changed from Summer to Winter time. However, if > > Gentoo was not running and you booted it this morning then it would, > > legitimately, assume that HW Clock had been set to the correct local > > time prior to it be booted. When you booted into MSWindows, it changed > > the time on the HW Clock to be Winter time (ie it put it back 1 hour), > > so that next time you booted into Gentoo the HW clock was set to the > > correct local time. With CLOCK="LOCAL", when you boot for the first time > > after a Summer/Winter time change, Gentoo has no way to telling whether > > or not something else (eg MSWindows or manually via the BIOS setup) has > > already changed the HW clock to Summer/Winter time. > > Thank you Graham for your very detailed reply! I understand now why the > problem exists. I have used the registry change suggested by Nuno on Win7 > and > will see what gives next time DST changes. I just hope that it'll work > without having *both* OS shifting the clock by one hour ... > > The more I read this page[1] the more I am tempted to format MSWindows out > of > this box whether the warranty is still valid or not! > > [1] > http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html<http://www.cl.cam.ac.uk/%7Emgk25/mswish/ut-rtc.html> > -- > Regards, > Mick > You guys had me scared for a bit. But I'm in the USA, where the change happens in the morning of the first Sunday in November, which will be the 7th. I can wait. ++ kevin -- Kevin O'Gorman, PhD
