ledemon

Fix Intel iGPU SR-IOV on Unraid 7.3.2My SetupUnraid 7.3.2 Kernel: 6.18.38-Unraid CPU: Intel Core i3-12100 iGPU: Intel UHD Graphics 730 (8086:4692) SR-IOV driver: i915-sriov 2026.05.06 Guests: Windows 11 and FnOS VM type: Q35 + OVMF ProblemsFnOS detected the Intel VF but could not initialize it. The guest log reported: BAR 0: can't assign; no space Windows 11 detected Intel UHD Graphics 730 but reported Code 43. CausesThere were two problems: The Q35 PCIe root-port memory window was too small for the Intel VF. Windows VBS/Hypervisor caused Code 43. Fix for Both FnOS and Windows 11Shut down the VM, then open: Unraid → VMs → Edit → XML View Change the first XML line from: <domain type='kvm'> To: <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> Add the following lines immediately before the final </domain> line: qemu:commandline <qemu:arg value='-global'/> <qemu:arg value='pcie-root-port.mem-reserve=32M'/> </qemu:commandline> Save the XML and start the VM. FnOS also needs an i915-sriov guest driver built for its exact kernel. My FnOS configuration: Kernel: 6.18.18.c1032-trim Guest driver: i915-sriov 2026.05.06 After these changes, FnOS successfully entered SR-IOV VF mode and loaded the i915 driver. Additional Fix for Windows 11Open “Turn Windows features on or off” and disable: Hyper-V Virtual Machine Platform Windows Hypervisor Platform Then open PowerShell as Administrator and run: bcdedit /set hypervisorlaunchtype off Fully shut down the VM: shutdown /s /t 0 Wait until Unraid shows the VM as stopped, then start it again. ResultFnOS: Intel VF successfully binds to i915. Windows 11: Intel UHD Graphics 730 Code 43 disappears. Both VMs require: pcie-root-port.mem-reserve=32M Windows 11 additionally requires: hypervisorlaunchtype off