Hello, a little late to the party, but I have the what started as the same VM image as Robert Strube. Its Windows 2019, default network driver. My system is Pop OS 19.04, based on Ubuntu 19.04. After an update I got kernel version 5.3.0-20-generic and this issue started happening to me. Pasted below is my 'journalctl -u libvirtd' from computer start up until crash.
-- Reboot -- Nov 05 22:26:45 adelle systemd[1]: Starting Virtualization daemon... Nov 05 22:26:46 adelle libvirtd[1366]: libvirt version: 5.0.0, package: 1ubuntu2.5 (Christian Ehrhardt <christian.ehrha...@canonical.com> Wed, 21 Aug 2019 11:15:43 Nov 05 22:26:46 adelle libvirtd[1366]: hostname: adelle Nov 05 22:26:46 adelle libvirtd[1366]: Libvirt doesn't support VirtualBox API version 6000014 Nov 05 22:26:46 adelle systemd[1]: Started Virtualization daemon. Nov 05 22:26:46 adelle dnsmasq[1559]: started, version 2.80 cachesize 150 Nov 05 22:26:46 adelle dnsmasq[1559]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset auth DNSSEC loop-detect inotify du Nov 05 22:26:46 adelle dnsmasq-dhcp[1559]: DHCP, IP range 192.168.122.2 -- 192.168.122.254, lease time 1h Nov 05 22:26:46 adelle dnsmasq-dhcp[1559]: DHCP, sockets bound exclusively to interface virbr0 Nov 05 22:26:46 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:46 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:46 adelle dnsmasq[1559]: read /etc/hosts - 7 addresses Nov 05 22:26:46 adelle dnsmasq[1559]: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses Nov 05 22:26:46 adelle dnsmasq-dhcp[1559]: read /var/lib/libvirt/dnsmasq/default.hostsfile Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:51 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:51 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:52 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:52 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:52 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:52 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:52 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:52 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:52 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:52 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:52 adelle dnsmasq[1559]: reading /etc/resolv.conf Nov 05 22:26:52 adelle dnsmasq[1559]: using nameserver 127.0.0.53#53 Nov 05 22:26:58 adelle libvirtd[1366]: Device 0000:02:00.0 not found: could not access /sys/bus/pci/devices/0000:02:00.0/config: No such file or directory Nov 05 22:26:58 adelle libvirtd[1366]: Device 0000:03:00.0 not found: could not access /sys/bus/pci/devices/0000:03:00.0/config: No such file or directory Nov 05 22:26:58 adelle libvirtd[1366]: Device 0000:03:01.0 not found: could not access /sys/bus/pci/devices/0000:03:01.0/config: No such file or directory Nov 05 22:26:58 adelle libvirtd[1366]: Device 0000:03:02.0 not found: could not access /sys/bus/pci/devices/0000:03:02.0/config: No such file or directory Nov 05 22:26:58 adelle libvirtd[1366]: Device 0000:3a:00.0 not found: could not access /sys/bus/pci/devices/0000:3a:00.0/config: No such file or directory Other relevant info is that after I reboot into my previous kernel, I need to delete /etc/apparmor.d/libvirt/libvirt-853c81f0-134d- 4b2d-8859-f00ca3273955.files and /etc/apparmor.d/libvirt/libvirt- 853c81f0-134d-4b2d-8859-f00ca3273955 in order to start my vm through Virtual Machine Manager. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849720 Title: Running VM with Virtual NIC Crashes Host OS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1849720/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs