bhyve can't handle ACPI when a nvidia modern GPU in passed within a Windows vm
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Date: Sat, 11 May 2024 13:57:46 UTC
Hello. What I would like to understand is why, when I try to pass my RTX 2080 ti from FreeBSD to Windows 11,it won't do it,causing the error 12. It says that it generates a resource conflict and requires additional installation). Now,inside it I still see the error 12 : The device PCI\VEN_10DE&DEV_1E04&SUBSYS_250319DA&REV_A1\3&61aaa01&0&48 generates a resource conflict and requires additional installation. I have 3 GPUS. The ones you see below : root@marietto-133:/usr/ports/www/chromium # lspci 00:02.0 Display controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630] (rev 02) 01:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1) 02:00.0 VGA compatible controller: NVIDIA Corporation TU102 [GeForce RTX 2080 Ti] (rev a1) 02:00.1 Audio device: NVIDIA Corporation TU102 High Definition Audio Controller (rev a1) 02:00.2 USB controller: NVIDIA Corporation TU102 USB 3.1 Host Controller (rev a1) 02:00.3 Serial bus controller: NVIDIA Corporation TU102 USB Type-C UCSI Controller (rev a1) What I do is to select (from the BIOS) the Intel or the Nvidia Geforce 1060 GPU, reserving the RTX 2080 ti to a guest os (Linux or Windows),by declaring this parameter inside the file /boot/loader.conf : pptdevs="2/0/0 2/0/1 2/0/2 2/0/3" Take in consideration that IT WORKS inside the Linux vm,but NOT in the Windows vm, because there are some kinds of conflicts between resources that I need to understand. I ran msinfo32 and then I checked the resource sharing and conflicts tab to see which devices are conflicting with each other and I found something really interesting (please see the picture below). [image: Istantanea_2024-05-09_17-56-58.png] I'm not a developer,but I suspect that a patch is needed for bhyve. Windows needs that ACPI is enabled within Windows itself, because when I have disabled (configuring the entries below to Start 4 - disabled) the entries below : HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\ACPI Start 0 HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\AcpiPmi Start 3 HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\acpitime Start 3 what's happened has been a BSOD : "Inaccessible Boot Device" I'm not sure if ACPI can be disabled in Windows without to break it irreversibly. I will keep trying to answer this question. What happens,instead if I keep ACPI enabled in Windows,but disabled in bhyve ? Windows crashed with the error "Video TDR failed" The error that I have shown happens in FreeBSD 13 and 14,maybe even 12. It never worked. Anyway,I'm using FreeBSD 14.0-RELEASE-p6. -- Mario.