Win10 VM QEMU/KVM clock not syncing

[Colin Law]

On Sun, 16 Aug 2020 at 16:24, Little Girl <littlergirl at gmail.com> wrote:
>
> Hey there,
>
> Colin Law wrote:
> >Little Girl wrote:
>
> >> I think it does have something to do with Ubuntu. If one of the
> >> people in this thread are correct, Ubuntu uses UTC time and Windows
> >> uses local time and that can cause an issue.
>
> [SNIP]
>
> >Thanks for the ideas, but I think this is a different issue, and on
> >further investigation perhaps it has always been there and I had not
> >noticed it.   I am not rebooting but am saving the VM state and then
> >restoring it.  Looking at the clock settings in Win 10 in more detail
> >it appears that it resyncs the clock only every 10 hours or so, based
> >on the time it currently thinks it is.  So if I save the vm and then
> >restore it an hour later the clock is one hour slow and will not
> >resync automatically for a number of hours.  Perhaps there is no way
> >round this other than to manually resync each time I restore.
>
> I think I've got a quick fix for you. After seeing your reply, I
> poked around inside of VirtualBox and it looks like the virtual
> machines are set to use UTC time by default. Since Windows uses local
> time, you should be able to go into the settings of that VM in the
> System tab and uncheck the box for UTC time to solve it. Here's
> hoping, anyway.

Thanks again, but it isn't that.  The example I gave of leaving it off
for an hour was poorly conceived.  If I save the image on a running VM
then leave it for a week and then restore it and continue then the
time is 1 week out, and doesn't recover for a number of hours, until
Win 10 decides to resync.

Colin
>
> --
> Little Girl
>
> There is no spoon.
>
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