Couldn\'t use x86 emulators, AVD manager shows warning \"/dev/kvm is not found\" and telling me to edit BIOS security setting to enable VT-x.
Just go to terminal and type
sudo chown 777 -R /dev/kvm,
then type
sudo chmod 777 -R /dev/kvm.
And restart android studio
And that's it..
In some case it may happened that for every start of android studio you need to type this commands First and then start android studio.