linux mint - QEMU + Virt-manager无法连接到virtlxcd-sock

我在Linux Mint 20上安装了qemu virt-manager libvirt，我在BIOS中安装了启用了AMD-V的AMD FX（tm）-4300四核处理器，重新启动了很多，但virt-manager（Virtual Machine Manager）是说：

Unable to connect to libvirt lxc:///.
Failed to connect socket to '/var/run/libvirt/virtlxcd-sock': No such file or directory
Libvirt URI is: lxc:///

我在本地运行。该文件/套接字不存在，但是该文件夹中有一个“ libvirt-sock”（和其他文件）。服务正在运行，但报告相同的错误：

    libvirtd.service - Virtualization daemon
     Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2020-09-01 10:11:27 BST; 12min ago
TriggeredBy: ● libvirtd.socket
             ● libvirtd-ro.socket
             ● libvirtd-admin.socket
       Docs: man:libvirtd(8)
             https://libvirt.org
   Main PID: 731 (libvirtd)
      Tasks: 19 (limit: 32768)
     Memory: 34.2M
     CGroup: /system.slice/libvirtd.service
             ├─ 731 /usr/sbin/libvirtd
             ├─1041 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt>
             └─1042 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt>

Sep 01 10:11:29 mainlinux dnsmasq[1041]: read /var/lib/libvirt/dnsmasq/default.addnhosts - 0 addresses
Sep 01 10:11:29 mainlinux dnsmasq-dhcp[1041]: read /var/lib/libvirt/dnsmasq/default.hostsfile
Sep 01 10:12:35 mainlinux libvirtd[731]: libvirt version: 6.0.0, package: 0ubuntu8.3 (Marc Deslauriers <marc.deslauriers@ubuntu.com> Thu, 30 >
Sep 01 10:12:35 mainlinux libvirtd[731]: hostname: mainlinux
Sep 01 10:12:35 mainlinux libvirtd[731]: Failed to connect socket to '/var/run/libvirt/virtlxcd-sock': No such file or directory
Sep 01 10:12:35 mainlinux libvirtd[731]: End of file while reading data: Input/output error

我将内核更新为5.8.5-generic，但除此之外，运行Mint 20（基于Ubuntu焦点）。任何人都知道如何解决此问题，或显示有关为何未创建virtlxcd-sock的日志？还尝试在libvirt子文件夹上使用sudo chmod 777并重新启动libvirtd，同样的错误。