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Please help,I have a problem with my machine,nvidia passtrough and code error 43. The driver is old 340.52-desktop-win8-win7-winvista-64bit-international-whql.exe qemu is 2.11 host is slackware 14.2 libvirt is 4.8 host-gpu(not passed) amd ati host-gpu(passed) nvidia GT218 gf 10 10de:0a65 This is my xml <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <name>Windows81</name> <uuid>1cdd1a64-bd6f-4cf7-891e-819b02656468</uuid> <title>windows81</title> <memory unit='KiB'>4240384</memory> <currentMemory unit='KiB'>4240384</currentMemory> <vcpu placement='static'>3</vcpu> <os> <type arch='x86_64' machine='pc-q35-2.10'>hvm</type> <loader readonly='yes' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader> <nvram>/var/lib/libvirt/qemu/nvram/generic-2_VARS.fd</nvram> <bootmenu enable='yes'/> </os> <features> <acpi/> <apic/> <vmport state='off'/> </features> <cpu mode='host-model' check='partial'> <model fallback='allow'/> </cpu> <clock offset='localtime'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <pm> <suspend-to-mem enabled='no'/> <suspend-to-disk enabled='no'/> </pm> <devices> <emulator>/usr/bin/qemu-kvm</emulator> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/home/user/drivers/windows/windows vari/virtio/virtio-win-0.1.141.iso'/> <target dev='sda' bus='sata'/> <readonly/> <boot order='1'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='unsafe' io='threads'/> <source file='/home/user/.local/share/libvirt/images/windows81.qcow2'/> <target dev='vda' bus='virtio'/> <boot order='2'/> <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </disk> <controller type='usb' index='0' model='ich9-ehci1'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x7'/> </controller> <controller type='usb' index='0' model='ich9-uhci1'> <master startport='0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0' multifunction='on'/> </controller> <controller type='usb' index='0' model='ich9-uhci2'> <master startport='2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x1'/> </controller> <controller type='usb' index='0' model='ich9-uhci3'> <master startport='4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x2'/> </controller> <controller type='sata' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <controller type='pci' index='0' model='pcie-root'/> <controller type='pci' index='1' model='dmi-to-pci-bridge'> <model name='i82801b11-bridge'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x1e' function='0x0'/> </controller> <controller type='pci' index='2' model='pci-bridge'> <model name='pci-bridge'/> <target chassisNr='2'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </controller> <controller type='pci' index='3' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='3' port='0x10'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/> </controller> <controller type='pci' index='4' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='4' port='0x11'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/> </controller> <controller type='pci' index='5' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='5' port='0x12'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/> </controller> <controller type='pci' index='6' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='6' port='0x13'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/> </controller> <controller type='pci' index='7' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='7' port='0x14'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/> </controller> <controller type='pci' index='8' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='8' port='0x15'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x5'/> </controller> <controller type='pci' index='9' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='9' port='0x16'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x6'/> </controller> <controller type='pci' index='10' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='10' port='0x17'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x7'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </controller> <interface type='bridge'> <mac address='**:**:**:**:**:**'/> <source bridge='bridge0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/> </interface> <serial type='pty'> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <input type='tablet' bus='virtio'> <address type='pci' domain='0x0000' bus='0x09' slot='0x00' function='0x0'/> </input> <input type='keyboard' bus='virtio'> <address type='pci' domain='0x0000' bus='0x0a' slot='0x00' function='0x0'/> </input> <graphics type='spice' autoport='yes' keymap='it'> <listen type='address'/> <image compression='off'/> <gl enable='no' rendernode='/dev/dri/renderD128'/> </graphics> <sound model='ich9'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1b' function='0x0'/> </sound> <video> <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> </video> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x07' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x07' slot='0x00' function='0x1'/> </source> <address type='pci' domain='0x0000' bus='0x08' slot='0x00' function='0x0'/> </hostdev> <redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='1'/> </redirdev> <redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='2'/> </redirdev> <redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='3'/> </redirdev> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/> </memballoon> </devices> <qemu:commandline> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=mouse1,evdev=/dev/input/by-id/usb-Logitech_USB_Receiver-event-mouse'/> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=kbd1,evdev=/dev/input/by-id/usb-_USB_Keyboard-event-kbd,grab_all=on,repeat=on'/> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=joypad1,evdev=/dev/input/by-id/usb-Logitech_Logitech_R__Precision_TM__Gamepad-event-joystick'/> <qemu:arg value='-cpu'/> <qemu:arg value='host,kvm=off'/> </qemu:commandline> </domain> Installing the driver,reboot and..code 43. Remove the device,reinstall driver,reboot and..code 43. No way? Please help,thanks.