XCP-ng 8.3 updates announcements and testing
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@lakpyro Could you export the output of
xen-bugtool -yand make it available somewhere privately? This will contain all logs and information about the hardware. Let us know also of times where you rebooting a VM and got this issue. -
Which version of Server are you running? UEFI, vTPM, Secureboot?
I don't have an Windows Server on my lab right now, but I can give it a quick check and see. Not sure I can pass through the iGPU in my lab though, and production doesn't have a GPU (real servers with ASpeed BMC).
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The VM is EUFI with no vTPM or Secure Boot enabled. The CPU us a "Xeon E-2336 CPU @ 2.90GHz" Running in a Super Micro Server. We use these servers at remote sites to run a number of VMs including a "Blue Iris" server with an Nvidia T1000 GPU passed thru to it, i have one such servers as a test server as well. The second machine doing it is a Minisforum MS-01 also with a T1000 GPU Passed thru in my home lab. The OS in both cases is Windows Server 2025. Over the weekend i cloned a fresh copy without GPU Passthru to see if it occurs with no GPU. We have about 15 of these VMs running at remote locations on the stable 8.3 patch branch that are not doing this.
It should be noted though that these VMs did need to be customized to allow Blue Iris to run without BSODing the VM on Intel CPUs. Thread can be found here: https://xcp-ng.org/forum/topic/8873/windows-blue-iris-xcp-ng-8-3/35?_=1746455850378 but in the end the following needed to be applied to a VM to keep it from BSODing when running Blue Iris on new Intel CPUs:
xe vm-param-add uuid=... param-name=platform msr-relaxed=true@tormi It does not seem to do it every time, it seems the VM must run for sometime and then be rebooted to cause it to happen. I have created a bug report file from the host as requested and will DM you a link to it! The last time i experienced this would have been at "May 2, 2025 at 4:18 PM (3 days ago)" according to our XOA appliance.
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I'm guessing it is something to do with the T1000. I've had so flakyness with them in our workstations. You don't have an older K620 or something do you? I'm also wondering if this might be a case for an Intel ARC GPU, they weren't out when I did my last workstation refresh or I'd probably be using them with Creative Cloud applications.
Also can you try change the Management Agent Service from auto-start to delayed auto-start? Server 2025 has been a bit odd for me for a while, and that was back running on Intel hosts (though they are old CPUs).
I'll see if I can get a VM up this afternoon, but I'm on AMD with the iGPU so not sure it even supports the acceleration that you need out of the T1000 for the camera recorders. I need to go through and configure each host to pass through the GPU, audio, and maybe some USB and then reboot. But if it works, it might make a nice Handbrake transcoding VM for me, dump files in, get back to work while it does it's thing.
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@reg_E I do not have anything older like a K620, i do have a GeForce GTX 1650 in another machine that is also doing this but i believe that's the same generation as the T1000 (Turing). I agree i think ARC could be a great replacement for this application in the future.
Since this is occurring at boot before the OS loads i'm not sure if this would be management agent related?
