KVM is required to run this AVD. /dev/kvm/ device:permission denied. Grant current user access to /dvm/kvm

When I updated my Android Studio to 3.2.2 and when tried to run emulator got the problem -

After searching on internet, I found the successful solution here .

Solution is to need to install qemu-kvm. To do this run command type -

sudo apt-get install qemu-kvm

After successful installation of qemu-kvm, check the ownership of /dev/kvm, to check this, type-

ls -al /dev/kvm 

After this command you can see that kvm is under root ownership.

Now type following command to check the which user is under kvm group -

grep kvm /etc/group

This command will give output like -

kvm:x:127:

So, there is nothing after second colon (:), there should be a username after second colon.

So, to add user (your system username) to kvm group, type

sudo adduser <your_system_user> kvm

This command will add you (your system user) to the kvm group.
Once again run the command -

grep kvm /etc/group

Output may be like -

kvm:x:127:your_system_username

Now all done. Re-login/restart  is required to apply the effects.

See all steps screen shot bellow -