Public bug reported: On qemu 2.10.0 Windows 10 and Windows Server 2016 hangs during boot. Below is setup of Windows Server 2016. Downgrading to 2.9 fixes the problem.
/usr/bin/qemu-system-x86_64 -name guest=<name>,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-2-<name >/master-key.aes -machine pc-q35-2.8,accel=kvm,usb=off,dump-guest- core=off -cpu host,nx=on,hv_relaxed,hv_vapic,hv_spinlocks=0x1000,hv_vpindex,hv_runtime,hv_synic,hv_reset,kvm=off -drive file=/usr/local/share/edk2.git/ovmf-x64/OVMF-pure- efi.fd,if=pflash,format=raw,unit=0 -drive file=/var/lib/libvirt/qemu/nvram/<name>_VARS.fd,if=pflash,format=raw,unit=1 -m 4096 -realtime mlock=off -smp 12,sockets=1,cores=6,threads=2 -object iothread,id=iothread1 -object iothread,id=iothread2 -object iothread,id=iothread3 -object iothread,id=iothread4 -object iothread,id=iothread5 -object iothread,id=iothread6 -object iothread,id=iothread7 -object iothread,id=iothread8 -object iothread,id=iothread9 -object iothread,id=iothread10 -object iothread,id=iothread11 -object iothread,id=iothread12 -uuid <uuid> -no- user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-2-<name>/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,clock=vm,driftfix=slew -no-shutdown -boot strict=on -device ioh3420,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 -device ioh3420,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 -device ioh3420,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 -device ioh3420,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 -device ioh3420,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 -device ioh3420,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 -device nec-usb-xhci,id=usb,bus=pci.3,addr=0x0 -drive if=none,media=cdrom,id=drive-sata0-0-0,readonly=on -device ide- cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=2 -drive if=none,media=cdrom,id=drive-sata0-0-1,readonly=on -device ide- cd,bus=ide.1,drive=drive-sata0-0-1,id=sata0-0-1,bootindex=1 -drive file=/dev/mapper/<boot disk>,format=raw,if=none,id=drive-sata0-0-2 -device ide-hd,bus=ide.2,drive=drive-sata0-0-2,id=sata0-0-2,bootindex=3 -netdev tap,fd=21,id=hostnet0,vhost=on,vhostfd=23 -device virtio-net- pci,netdev=hostnet0,id=net0,mac=<mac>,bus=pci.1,addr=0x0 -netdev tap,fd=24,id=hostnet1,vhost=on,vhostfd=25 -device virtio-net- pci,netdev=hostnet1,id=net1,mac=<mac>,bus=pci.2,addr=0x0 -device usb- tablet,id=input0,bus=usb.0,port=1 -spice unix,addr=/var/lib/libvirt/qemu/domain-2-<name>/spice.sock,disable- ticketing,image-compression=auto_glz,seamless-migration=on -vnc 127.0.0.1:0 -device qxl- vga,id=video0,ram_size=67108864,vram_size=16777216,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 -device vhost-scsi- pci,wwpn=<wwpn>,vhostfd=26,id=hostdev0,bus=pcie.0,addr=0x9 -device virtio-balloon-pci,id=balloon0,bus=pci.4,addr=0x0 -object rng- random,id=objrng0,filename=/dev/random -device virtio-rng- pci,rng=objrng0,id=rng0,max-bytes=1024,period=1000,bus=pci.5,addr=0x0 -msg timestamp=o ** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1716510 Title: qemu 2.10.0 cannot boot Windows 10 familly Status in QEMU: New Bug description: On qemu 2.10.0 Windows 10 and Windows Server 2016 hangs during boot. Below is setup of Windows Server 2016. Downgrading to 2.9 fixes the problem. /usr/bin/qemu-system-x86_64 -name guest=<name>,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-2-<name >/master-key.aes -machine pc-q35-2.8,accel=kvm,usb=off,dump-guest- core=off -cpu host,nx=on,hv_relaxed,hv_vapic,hv_spinlocks=0x1000,hv_vpindex,hv_runtime,hv_synic,hv_reset,kvm=off -drive file=/usr/local/share/edk2.git/ovmf-x64/OVMF-pure- efi.fd,if=pflash,format=raw,unit=0 -drive file=/var/lib/libvirt/qemu/nvram/<name>_VARS.fd,if=pflash,format=raw,unit=1 -m 4096 -realtime mlock=off -smp 12,sockets=1,cores=6,threads=2 -object iothread,id=iothread1 -object iothread,id=iothread2 -object iothread,id=iothread3 -object iothread,id=iothread4 -object iothread,id=iothread5 -object iothread,id=iothread6 -object iothread,id=iothread7 -object iothread,id=iothread8 -object iothread,id=iothread9 -object iothread,id=iothread10 -object iothread,id=iothread11 -object iothread,id=iothread12 -uuid <uuid> -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-2-<name>/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,clock=vm,driftfix=slew -no-shutdown -boot strict=on -device ioh3420,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 -device ioh3420,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 -device ioh3420,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 -device ioh3420,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 -device ioh3420,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 -device ioh3420,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 -device nec-usb-xhci,id=usb,bus=pci.3,addr=0x0 -drive if=none,media=cdrom,id=drive-sata0-0-0,readonly=on -device ide- cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=2 -drive if=none,media=cdrom,id=drive-sata0-0-1,readonly=on -device ide- cd,bus=ide.1,drive=drive-sata0-0-1,id=sata0-0-1,bootindex=1 -drive file=/dev/mapper/<boot disk>,format=raw,if=none,id=drive-sata0-0-2 -device ide-hd,bus=ide.2,drive=drive- sata0-0-2,id=sata0-0-2,bootindex=3 -netdev tap,fd=21,id=hostnet0,vhost=on,vhostfd=23 -device virtio-net- pci,netdev=hostnet0,id=net0,mac=<mac>,bus=pci.1,addr=0x0 -netdev tap,fd=24,id=hostnet1,vhost=on,vhostfd=25 -device virtio-net- pci,netdev=hostnet1,id=net1,mac=<mac>,bus=pci.2,addr=0x0 -device usb- tablet,id=input0,bus=usb.0,port=1 -spice unix,addr=/var/lib/libvirt/qemu/domain-2-<name>/spice.sock,disable- ticketing,image-compression=auto_glz,seamless-migration=on -vnc 127.0.0.1:0 -device qxl- vga,id=video0,ram_size=67108864,vram_size=16777216,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 -device vhost-scsi- pci,wwpn=<wwpn>,vhostfd=26,id=hostdev0,bus=pcie.0,addr=0x9 -device virtio-balloon-pci,id=balloon0,bus=pci.4,addr=0x0 -object rng- random,id=objrng0,filename=/dev/random -device virtio-rng- pci,rng=objrng0,id=rng0,max-bytes=1024,period=1000,bus=pci.5,addr=0x0 -msg timestamp=o To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1716510/+subscriptions