Hi Keith,

I just learn to live with this problem and not bother with the time on my PC (I fix it so its right in Linux and ignore in Micro$oft) - that's not very helpful I know, and it could matter to you if you NEED your time to be correct.

I think one way of solving this is as follows. In Windows, there is an option somewhere in the regional settings which is "automatically adjust my clock for daylight saving time" - if you deselect this option, then you have control over what Windows does (i.e Microshaft will not alter your hardware clock). I've never done this, as I said, I'm not really that troubled by it, but I think it might work.

Don't forget the Power of Google, either! Searching for "windows linux daylight saving time UTC bios" gave me a raft of pages, including:

http://linux.co.uk/ldp/LDP/LG/issue73/issue73.html (it's a BIG page - look for the article titled 'clock setting').

This mentions running your BIOS clock on localtime to keep Windows happy, but I always found that knocked Linux out. Alternatively there was a hit for an Ubuntu discussion, where there was a Linux option to specifiy that the bios time was localtime and not UTC - perhaps there's something similar in Mandriva...

http://ubuntuforums.org/showthread.php?t=150472&page=2

I'll watch this thread, as it would neat to have a solution that works, even though I'm not too troubled by it...

Good luck,
David.

Keith Powell wrote:

I run a couple of versions of Linux and also XP. They are all on separate hard drives which I plug in as needed. But I think my problem will apply to dual booting as well.

During the winter, here in the UK, we are on UTC (GMT) and there is no problem. During the summer, we are on UTC+1 (British Summer Time), when there is a problem. Here it is, as concisely as possible.

In Linux:

If the computer's BIOS clock is set to UTC, the desktop clock shows the correct local time. The Time Zone is set to London, which is correct.

If the BIOS clock is set to UTC+1, (Summer Time) the desktop clock is an hour fast. If the desktop clock is put back an hour, so that it shows the correct time, the BIOS clock is now back to UTC.


In WindowsXP:

If the BIOS clock is set to UTC, on booting, Windows automatically changes it to local time (UTC+1) and shows the correct desktop time.


So, when I next boot up Linux, the clock is an hour wrong and I have to reset it.

I can find no way of getting Linux (except for SUSE, which allows one to chose between UTC and local) to cope with the BIOS clock being set to local time, or for XP to cope with the BIOS clock being set to UTC and not changing it.

Please, what do you dual-booters do? It's frustrating having to regularly reset the clock. Oh yes, I do need XP as well as Mandriva!!

The answer is probably staring me in the face.

Many thanks for any help.

Keith
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