I could not upgrade from Xubuntu 18.04 to Xubuntu 18.10, due to possible demise of 32-bit support, so I have done a fresh install of Xubuntu 18.10 64-bit. Windows 10 guest will still not boot, but now I get the BIOS flash and the Windows 10 Logo, on which it stays indefinitely with 100% cpu. Here is my qemu command:
qemu-system-x86_64 \ -name windows-10-pro \ -pidfile /tmp/windows-10-pro.pid \ -m 2047M \ -cpu host \ -smp 1 \ -enable-kvm \ -rtc clock=host,base=localtime \ -machine type=ubuntu \ -k en-us \ -drive file=/media/V-BOX/KVM/Win10/Win10-VM.qcow2,if=virtio,media=disk,format=qcow2,index=0 \ -drive file=/media/Big_NTFS/G/Backup/KVM/Win10/Win10-VM_Backup_Disk.qcow2,if=virtio,media=disk,format=qcow2,index=1 \ -drive file=/media/Shared/E/Win10-VM_Page_File.qcow2,if=virtio,media=disk,format=qcow2,index=2 \ -usb \ -device usb-ehci,id=ehci \ -device piix3-usb-uhci \ -device usb-tablet If I add ",hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time" to "-cpu host" the cpu usage goes to 0-5% but still stuck on Windows 10 logo. This command still works well on Xubuntu 16.04 32-bit (running qemu- system-x86, of course), kernel 4.8.0-58. Back to Xubuntu 18.10 64-bit, I can boot from xubuntu-18.10-desktop- amd64.iso using this qemu command: qemu-system-x86_64 \ -name xubuntu-18.10-desktop-amd64 \ -pidfile /tmp/xubuntu-18.10-desktop-amd64.pid \ -m 2047M \ -cpu host \ -smp 1 \ -enable-kvm \ -rtc clock=host,base=localtime \ -machine type=ubuntu \ -k en-us \ -boot d -cdrom /media/Shared/E/ISO/xubuntu-18.10-desktop-amd64.iso \ -usb \ -device piix3-usb-uhci \ -device usb-tablet This leads me to believe it is a different problem than the original post - maybe related to Windows. The same thing happens if I try anything Windows related (WinXP Install ISO, Win10 Install ISO, WinPE ISO, etc). I tried virt-manager with an AOMEI Backupper WinPE ISO that I use to backup Windows 10 guest and was able to get that to boot but no mouse and no keyboard. When I Add Hardware > USB Host Device > Logitech MK260 Wireless Mouse/KB Combo, then run, my whole machine freezes and I have to hard reboot. I know next to nothing about virt-manager so I don't know how to proceed with that. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767857 Title: Kernel 4.4.0-122 Breaks qemu-system-x86 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767857/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs