KVM is not installed on this machine (/dev/kvm is missing)
Use the below command to check whether the KVM is installed in the machine or not,
kvm-ok
Output:
INFO: /dev/kvm exists
KVM acceleration can be used
Output like the below means,
INFO: Your CPU does not support KVM extensions
KVM acceleration can NOT be used
In this scenario need to install KVM using the below command,
sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils
Hope this helps.
Either your CPU does not support virtualization, or it is disabled in the bios. Go into your bios and see if you can find a setting to enable it.
HP-EliteBook-820-G1:/opt/android-studio/bin$ sudo /usr/sbin/kvm-ok
INFO: /dev/kvm does not exist
HINT: sudo modprobe kvm_intel
INFO: Your CPU supports KVM extensions
INFO: KVM (vmx) is disabled by your BIOS
HINT: Enter your BIOS setup and enable Virtualization Technology (VT),
and then hard poweroff/poweron your system
KVM acceleration can NOT be used
Affter bios setting, I used the following command
sudo modprobe kvm_intel
Now is ok