22

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
Zanna
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Nomi Shaw
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5 Answers5

35

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

Kulfy
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G. Spyridakis
  • 466
1

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

Tuychiev Toir
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0

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

Gayan Weerakutti
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-1

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
ADNow
  • 99
-1

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

Rohit
  • 99