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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1767857 Title: Kernel 4.4.0-122 Breaks qemu-system-x86 Status in linux package in Ubuntu: Confirmed Status in qemu package in Ubuntu: Incomplete Bug description: Fully updated xubuntu 16.04 running kernel 4.4.0-122 breaks qemu- system-x86: black screen displays and qemu-system-x86 runs at 100% cpu indefinitely. Boot the same system with kernel 4.4.0-119 and qemu- system-x86 works fine running a Windows 10 VM. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: qemu-system-x86 1:2.5+dfsg-5ubuntu10.25 ProcVersionSignature: Ubuntu 4.4.0-122.146-generic 4.4.117 Uname: Linux 4.4.0-122-generic i686 ApportVersion: 2.20.1-0ubuntu2.16 Architecture: i386 CurrentDesktop: XFCE Date: Sun Apr 29 15:58:25 2018 InstallationDate: Installed on 2014-04-29 (1460 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2) KvmCmdLine: COMMAND STAT EUID RUID PID PPID %CPU COMMAND kvm-irqfd-clean S< 0 0 394 2 0.0 [kvm-irqfd-clean] MachineType: Dell Inc. Inspiron 518 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-122-generic root=UUID=7cffb293-c044-4b2c-8343-dc50fd16db97 ro --verbose nosplash nmi_watchdog=0 SourcePackage: qemu UpgradeStatus: Upgraded to xenial on 2016-08-10 (627 days ago) dmi.bios.date: 03/30/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.8 dmi.board.name: 0K068D dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: OEM dmi.modalias: dmi:bvnDellInc.:bvr1.0.8:bd03/30/2009:svnDellInc.:pnInspiron518:pvr00:rvnDellInc.:rn0K068D:rvrA00:cvnDellInc.:ct3:cvrOEM: dmi.product.name: Inspiron 518 dmi.product.version: 00 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767857/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp