I passed a Intel Corporation HD Graphics 620 graphic card to kvm instance on my i3-7130U host of Ubuntu 18.04 with kernel version 4.15.0 qemu args: -device vfio-pci,host=00:02.0,id=hostdev0,bus=pci.0,addr=0x2 -set device.hostdev0.x-igd-opregion=on -set device.hostdev0.x-igd-gms=1 -bios /usr/share/seabios/bios.bin -chardev file,id=seabios,path=/tmp/bios.log
After vm shutdown, the screen is black, I want to use it on host: echo 1 > /sys/bus/pci/devices/0000:00:02.0/remove echo 1 > /sys/bus/pci/rescan now lspci -vs 0000:00:02.0 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation HD Graphics 620 Flags: fast devsel, IRQ 11 Memory at d1000000 (64-bit, non-prefetchable) [disabled] [size=16M] Memory at c0000000 (64-bit, prefetchable) [disabled] [size=256M] I/O ports at 1000 [disabled] [size=64] Capabilities: [40] Vendor Specific Information: Len=0c <?> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [ac] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [100] Process Address Space ID (PASID) Capabilities: [200] Address Translation Service (ATS) Capabilities: [300] Page Request Interface (PRI) Kernel modules: i915 And I rmmod vfio/i915 and modprobe -r i915, but the screen is still black and silent. What should I do to make use of the IGD graphic card without host reboot again?
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