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Nomi Shaw
Asked: 2018-06-29 21:26:37 +0800 CST

KVM is required to run this AVD

  • 772

I am on Ubuntu 18.04 LTS and I am trying to set up Android Studio for the first time. When I run my simple "Hello World" app, it gives me a pop-up that says

KVM is required to run this AVD.
Unknown Error

Please file a bug against Android Studio

popup

But when I run simply kvm-ok it outputs:

INFO: /dev/kvm exists
KVM acceleration can be used
kvm android-studio 18.04

5 Answers

  1. Best Answer

    Starting with Ubuntu 18.04 and Linux Mint Tara you need to install qemu-kvm

    sudo apt install qemu-kvm

    Check the ownership of /dev/kvm

    ls -al /dev/kvm

    Check which users are in the kvm group

    grep kvm /etc/group

    Output from the above command

    kvm:x:some_number:

    If there is nothing rightwards of the final :, there are no users in the kvm group.

    To add the current user to the kvm group

    sudo adduser $USER kvm

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

    A restart may be required for the permissions to take effect.

    Official answer on StackOverflow

    • 35

  2. Change sdk emulator folder permission. This is worked for me. 

    chmod 777 -R {sdk folder}/emulator

    https://stackoverflow.com/questions/44635879/kvm-is-required-to-run-this-avd-unknown-error-please-file-a-bug-against-androi

    • 1

  3. To run KVM, you need a processor that supports hardware virtualization.

    To see if your processor supports hardware virtualization, you can review the output from this command:

    egrep -c '(vmx|svm)' /proc/cpuinfo

    • If 0 it means that your CPU doesn't support hardware virtualization.

    • If 1 or more it does - but you still need to make sure that virtualization is enabled in the BIOS.

    Installation of KVM

    Cosmic (18.10) or later

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

    You need to ensure that your username is added to the group libvirtd, and kvm:

    sudo adduser `id -un` libvirt
sudo adduser `id -un` kvm

    Verify Installation

    Run kvm-ok on the command line.

    $ kvm-ok
INFO: /dev/kvm exists
KVM acceleration can be used

    Logout or restart for changes to take effect.

    Sources:

    https://developer.android.com/studio/run/emulator-acceleration#accel-check https://help.ubuntu.com/community/KVM/Installation

    • 0

  4. I usually run

    sudo chown username -R /dev/kvm

    but this is only good for a while. Looking for a better solution.

    There is also another command:

    sudo adduser username kvm
    • -1

  5. Login as a root user sudo su goto the studio installation dir withcd ${path_of _installation_dir}/android-studio/bin and relaunch the sdk with ./studio.sh. Then try relaunching your avd

    • -1