Android Studio: /dev/kvm device permission denied

https://stackoverflow.com/questions/37300811/android-studio-dev-kvm-device-permission-denied

To check the ownership of /dev/kvm use

ls -al /dev/kvm

The user was root, the group kvm. To check which users are in the kvmgroup, use

grep kvm /etc/group

This returned

kvm:x:some_number:

on my system: as there is nothing left to the final :, there are no users in the kvm group.

To add the user username to the kvm group, you could use

sudo adduser username kvm

which adds the user to the group, and check once again with grep kvm /etc/group.