[fixed] Gnome Boxes can not install any linux distro with error message "no kvm"

I installed gnome-boxes via APT on my Ubuntu 24.04 LTS. I installed Windows 11 on it easily, but every time I try to install elementary OS or Nix OS or any other Linux distro I face an error message of “No KVM”.

I run this command to fix missing dependencies.

sudo apt upgrade --fix-missing

but still GNOME boxes does not let me create a linux box yet.

I run gnome-boxes from the command line and tried to install a Linux distro. I run it from the terminal to see the underlying error messages. The error message in my case is.

Boxes-Message: 12:47:03.456: libvirt-machine.vala:290: Failed to connection to system libvirt: Unable to open qemu+unix:///system: Failed to connect socket to '/var/run/libvirt/libvirt-sock-ro': No such file or directory

I googled for more and more, then I tried to install all virtualization software packages needed by GNOME Boxes like this.

sudo apt install qemu
sudo apt install qemu-kvm
sudo apt install libvirt-clients
sudo apt install libvirt-daemon-system
sudo apt install virtinst
sudo apt install bridge-utils

then I enabled and started virtualization service (libvirtd) by these two commands.

sudo systemctl enable libvirtd
sudo systemctl start libvirtd

After that I restarted my laptop. Now, I installed Elementary OS in a box in GNOME boxes. And I’ll try more Linux distributions later today.

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