Windows 11 Pro 24H2 VM Random Freezes on XCP-NG 8.3
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@Danp hi thanks, i don't think i use all on default param on xoa and xcp-ng
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@DevilDan Which software was uninstalled if you don't mind telling?
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@dinhngtu It's not the software, the problem is back again
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@Danp @dinhngtu Hi, today I will try Win 10 22H2 latest. Maybe it is the vtpm and uefi secure boot the problem ? I have a freeze at boot on DVD when asking Product Key, i restart install, with VTPM and UEFI + secure boot, loike Win 11, we will see
Edit : CPU instable, after freeze, I try in BIOS mode with no VTPM
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@DevilDan If the problem shows up on older Windows versions I would start suspecting a few other factors.
- Do you have any Windows PV drivers installed?
- Could you switch back to the Realtek NIC model instead of Intel e1000?
- Does it happen on all VMs at once or just one VM at a time?
- Any issues with Linux distros?
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No issues on Linux VMs, the problem only occurs on Windows 11 24H2, 23H2 (so far) and Windows 10, all running in UEFI mode.
- No issues so far on a new Windows 10 VM running in BIOS mode.
- I'm always installing Xen Guest drivers 9.4 (we also tested without them).
- The VMs have nothing special installed, it's just a clean Windows setup.
- I don't remember if the issue appeared on both Windows versions at the same time, so I can't confirm a correlation, but it's a possibility.
- I had some "coalesce" issues on another Linux VM, but that's been resolved, and it doesn't seem related.
- I already tested both Intel and Realtek NIC models, same issue. However, I'll switch everything back to Realtek just in case.
- Currently, I have a Windows 11 24H2 VM and a Windows 10 VM (I deleted Windows 11 23H2—it was the most stable and used less CPU than 24H2, but since I'm testing, I'll stick with 24H2).
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@dinhngtu
I also remember having installation issues and freezes with PFsense VMs or performance slowdowns with OPNSense in UEFI mode, I think. It feels like UEFI isn't that great? -
@DevilDan
We had a similar problem when we tested version 8.3. In our case, it was related to the memory limits of the VMs.In 8.2, setting different values for Dynamic and Static memory caused a bluescreen.
In 8.3, Windows Server VMs sometimes bluescreened, while both Windows Desktop and Server VMs occasionally froze as you described.Our VMs were not fresh installs, but we resolved the issue by setting the Dynamic and Static memory limits to the same value (both min and max).
Please do try to see if it solves your problem.
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Thanks for your feedback!
I usually always set the Dynamic and Static memory limits to the same value because I don't like auto-scaling based on load. I prefer to allocate the actual possible usage. I've attached a screenshot of my RAM configuration; since I'm not very familiar with Xen Orchestra, I just want to confirm that this setup is correct. Normally, I've set both the minimum and maximum dynamic memory to 8GB, as well as the static memory.
So far, my Windows 10 VM (BIOS) hasn’t had any issues, but the Windows 11 VM (UEFI) still seems to freeze. I’ll double-check, but it looks like the problem is really related to UEFI.
Also, I can't edit the static min memory value in XOA, and I don't know why. Is this the expected behavior?
Just to be sure, I'll set the static min memory to 8GB (in CLI on XCP-NG console) and observe the behavior, even though the documentation suggests it shouldn't make any difference.
