[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1925966
Title:
Win10 guest freezes randomly
Status in QEMU:
Expired
Bug description:
In addition to bug #1916775, my Win10 Home guest freezes randomly and
infrequently. Unlike bug #1916775, this is unrecoverable and I see on
the host (Debian 4.19.171-2) via iotop that all disk IO has stopped.
My only recourse is a hard reset of the guest.
My setup uses PCI-pass-through graphics (GTX 1650), host cpu (Ryzen 7
3800XT). It seems to occur more frequently (every few hours) after
switching from "kvm=off,vendor=GenuineIntel" to "kvm=on" and maybe
using 3 monitors rather than 2 on the pass-through graphics card
further increases frequency. The switch to "kvm=on" was necessary to
enable nested virtualization, which now works. It occurs whether or
not I use the qcow disk drive.
qemu-system-x86_64
-cpu
host,kvm=on,l3-cache=on,hv_relaxed,hv_vapic,hv_time,hv_spinlocks=0x1fff,hv_vendor_id=hv_dummy
-smp 8
-rtc clock=host,base=localtime
-machine type=q35,accel=kvm,kernel_irqchip=on
-enable-kvm
-drive if=pflash,format=raw,readonly,file=/usr/share/OVMF/OVMF_CODE.fd
-drive if=pflash,format=raw,file=/tmp/OVMF_VARS.fd
-m 32G
-usb
-device usb-tablet
-vga none
-serial none
-parallel none
-boot cd
-nographic
-device usb-host,vendorid=0x045e,productid=0x00db
-device usb-host,vendorid=0x1bcf,productid=0x0005
-drive
id=disk0,index=0,format=qcow2,if=virtio,cache=off,file=./win10_boot_priv.qcow2
-drive
id=disk2,index=2,aio=native,cache.direct=on,if=virtio,cache=off,format=raw,discard=unmap,detect-zeroes=unmap,file=/dev/vg0/win10_hdpriv
-device vfio-pci,host=09:00.0,addr=0x02.0x0,multifunction=on
-device vfio-pci,host=09:00.1,addr=0x02.0x1
-device vfio-pci,host=09:00.2,addr=0x02.0x2
-device vfio-pci,host=09:00.3,addr=0x02.0x3
-netdev tap,id=netid,ifname=taplan,script=no,downscript=no
-device e1000,netdev=netid,mac=52:54:00:01:02:03
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