Save Energy (S3) and time synchronization?

Copper Contributor

I installed a Hyper-V 2019 1903 with proper network and graphics card drivers to support save energy (s3), as the virtual machine services are not required all the time (a branch office installation) and I want to save energy then. I also installed an Ubuntu 18.04.02 virtual machine. Now when I save energy and wake the machine some time later, the clock in the VM is behind current time.

I´d definitely appreciate if on resume of the host, the time within virtual machines would be adjusted automatically.

Am I missing a prerequesite for this to happen automatically?

I am working around the issue by saving the vms at suspend and (re-)starting them at resume, but this heavily depends on  how exactly S3 is triggered.

Thanks, Joachim


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