Running Ubuntu 20.04.
sudo virt-manager
Unable to connect to libvirt qemu:///system.
Verify that the 'libvirtd' daemon is running.
Googled ‘Verify that the 'libvirtd' daemon is running.’
https://ubuntuforums.org/showthread.php?t=2480264 mentions KVM.
kvm --version
QEMU emulator version 8.0.4 (Debian 1:8.0.4+dfsg-1ubuntu3.23.10.5~backport20.04.202407120432~ubuntu20.04.1) Copyright (c) 2003-2022 Fabrice Bellard and the QEMU Project developers
sudo systemctl start libvirtd
Failed to start libvirtd.service: Unit libvirtd.service is masked.
systemctl status libvirtd
● libvirtd.service Loaded: masked (Reason: Unit libvirtd.service is masked.) Active: inactive (dead)
sudo systemctl unmask libvirtd.service
Removed /etc/systemd/system/libvirtd.service.
sudo systemctl status libvirtd.service
Unit libvirtd.service could not be found.
sudo apt install qemu-kvm libvirt-daemon-system
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies. libvirt-daemon-system : Depends: libvirt-clients (= 6.0.0-0ubuntu8.20) but 10.0.0-2ubuntu8.3~backport20.04.202408270202~ubuntu20.04.1 is to be installed Depends: libvirt-daemon (= 6.0.0-0ubuntu8.20) but it is not going to be installed qemu-kvm : Depends: qemu-system-x86 (= 1:4.2-3ubuntu6.29) but 1:8.0.4+dfsg-1ubuntu3.23.10.5~backport20.04.202407120432~ubuntu20.04.1 is to be installed E: Unable to correct problems, you have held broken packages.
sudo apt-get install libvirt-clients
Reading package lists... Done
Building dependency tree
Reading state information... Done
libvirt-clients is already the newest version (10.0.0-2ubuntu8.3~backport20.04.202408270202~ubuntu20.04.1).
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
sudo apt-get install libvirt-daemon
Reading package lists... Done
Building dependency tree
Reading state information... Done
libvirt-daemon is already the newest version (10.0.0-2ubuntu8.3~backport20.04.202408270202~ubuntu20.04.1).
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
Unsure how to fix broken packages.
Thank you.
sudo synaptic
Highlight All
Edit -> Fix Broken Packages
Clicked Reload
0 broken appears at bottom of window.
sudo apt install qemu-kvm libvirt-daemon-system
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies. libvirt-daemon-system : Depends: libvirt-clients (= 6.0.0-0ubuntu8.20) but 10.0.0-2ubuntu8.3~backport20.04.202408270202~ubuntu20.04.1 is to be installed Depends: libvirt-daemon (= 6.0.0-0ubuntu8.20) but it is not going to be installed qemu-kvm : Depends: qemu-system-x86 (= 1:4.2-3ubuntu6.29) but 1:8.0.4+dfsg-1ubuntu3.23.10.5~backport20.04.202407120432~ubuntu20.04.1 is to be installed E: Unable to correct problems, you have held broken packages.
So, same issue.