Win10 VM QEMU/KVM clock not syncing

[Little Girl]

Hey there,

Colin Law wrote:

>I have a Win10 VM running in QMU/KVM on Ubuntu. I routinely Save and
>Restore the image and for some time all was well.  Recently, however,
>I find that Windows does not resync the time when I restore the
>image, and I think (but cannot be certain) that this started failing
>when I upgraded to Ubuntu 20.04.  It is set to autosync in the
>windows settings and resyncs fine when I tell it to sync.

I've been dealing with a related issue on a machine that contains two
separate drives. One has the previous LTS release of Ubuntu MATE (I'm
being really bad about updating that) and the other has Windows 10 on
it. Both drives are plugged into an internal switch in my computer
that controls which of them is connected based on the combination of
buttons I press when the power is off. When I'm in either one of
them, the other one doesn't physically exist and is just collecting
dust inside the machine. I don't boot the Windows drive often, but I
can tell you that it has always frequently an intermittent issue with
not getting the time right.

>Perhaps this is nothing to do with Ubuntu, in which case sorry for
>the noise, but perhaps someone may have a suggestion.

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. Anyway, this is some
interesting reading you might want to check out. It offers several
suggestions that might work for your circumstances and I certainly
plan on trying one or more of them for mine:

https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/windows-10-time-always-wrong/75d9036d-9f43-4a06-9c34-ec9bdc8f4fd7

-- 
Little Girl

There is no spoon.