RealTimeIsUniversal - Windows VM - PV driver does not work
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We installed new VM (Windows 11 - 24H2) in XCP-ng (latest-version, from source).
Everything works fine, XEN tools work fineManagement agent 9.4.1-160 detected and works
We set-up in windows registry QWORD value HKLM\CurrentControlSet\CurrentControl\TimeZoeInformation\RealTimeIsUniversal=1
(We need this settings for many computers/VM with dual boot)- The VM cannot boot with using PV drivers - it use QEMU drivers.
2, in XOA the VM reported "management agent NOT installed" (In windows is reported as installed)
- XOA is unable report memory usage
If we tried to remove (manualy, by GPO or by script) this registry entry, VM is unable to boot (error: unaccesible boot device) or crashed (rarely).
I think it is bug in management agent/PV drivers for Windows.
Have you any solution for using PV drivers in Windows with setting BIOS/UEFI using real time clock as UTC? -
Hi,
Question for @dinhngtu
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@jiri.hadamek The drivers don't like that value being a REG_QWORD. Try using REG_DWORD instead.
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@dinhngtu "The drivers don't like that value being a REG_QWORD" - if you mean by that: "The PV driver doesn´t work correctly with qword value" then I will try set it to REG_DWORD even every documentation on Internet and in Microsoft demand QWORD.
Then I will put result here.