Android Studio Emulator "/dev/kvm is not found"

Question

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.

I had the same problem: couldn't run AVD (image Nougat x86_64). As [makthrow answer](http://stackoverflow.com/a/40431889/6485987), how I solved: just enabled *Intel Virtualization Technology* in BIOS (*BIOS Features* section for my Gigabyte motherboard). Note: SDK Manager show for *Intel x86 Emulator Accelerator (HAXM installer)*: "Not compatible with Linux" and it is not possible to install. — T77, Feb 23 '17 at 21:11
This Helped me, on macOS High Sierra: https://stackoverflow.com/a/44942860/502404 — misima, Oct 06 '17 at 21:46

score 45 · Accepted Answer · answered Apr 23 '16 at 15:21

45

Re-installing HAXM resolved my problem Steps:

Make sure SDK Manager -> Extras -> Intel x86 Emulator Accelerator (HAXM installer) is installed
Navigate to <sdk>/extras/intel/Hardware_Accelerated_Execution_Manager/
Run ./HAXM\ installation -u
Run ./HAXM\ installation

answered Apr 23 '16 at 15:21

ttyip

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Under MacOS X I have to allow also the installation under "Security & Privacy" – Damian Nov 14 '17 at 08:53
It gives me "Permission Denied" I also tried to execute it after "sudo su" and using my admin password. – Naveed Abbas Jan 02 '18 at 20:14
`./HAXM\ installation` gives installation failed – Ahmed Ismail May 17 '18 at 12:35
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On ubuntu I don't see the 'extras' – Michael Durrant Jul 30 '20 at 11:12

score 45 · Answer 2 · answered Nov 21 '17 at 14:03

45

For MacOS users running Android Studio, when you get this error then try these steps to open up your privacy settings.

You can also follow the answer from Divakar on this post here - /dev/kvm not found on mac

Thank you Apple for pushing me with your dumb*** app review rules from iOS to android development

answered Nov 21 '17 at 14:03

Sam B

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I needed to both reinstall and give permissions – rvazquezglez Dec 15 '17 at 03:02

Adriano Sales · Answer 3 · 2017-05-17T14:42:24.237

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You just need to "start" the HAXM. You can do this following this steps:

Open the cmd.
Type sc query intelhaxm, click enter and check the STATE.
If state is 1 STOPED, type sc start intelhaxm and click enter to start the HAXM.
Check the STATE again and it should be 4 RUNNING now.
Finally, you are now able to create and use your AVD using a x86 emulator.

Alternatively, when you want to stop the HAXM you should type sc stop intelhaxm.

Hope this helps y'all.

edited May 17 '17 at 14:42

answered May 17 '17 at 01:47

Adriano Sales

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[SC] EnumQueryServicesStatus: Open Service FAILED 1060 Specified service does not exist as an installed service. – MMG Jun 17 '17 at 07:14
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in my case when i started to start the intelhaxm it gave message "windows can not verity the digital signature for this file. a recent hardware or software change might have installed a file that is signed incorrectly or damaged" – Abdul Wahid Jul 03 '18 at 09:26
Hi Abdul Wahid, I am also getting the same error message after running "sc start intelhaxm". May I know what is the Issue and what is the solution for this ?Please help me on this. – Naveen Aug 30 '19 at 14:25

score 1 · Answer 4 · answered Sep 23 '16 at 10:29

I had a similar message in the emulators area in Android Studio 2.1.

My emulator for a certain API (think 21) worked initially fine and was fully accelerated, then installed a couple of other images (Nougat x86/64 etc) and suddenly started seeing /dev/kvm not found and NO emulator would boot up.

In My Case, re-installing HAXM sadly did not help, but rebooting my MAC did (go figure).
But, I also noted that if you have installed an emulator image but not the related SDK for the API (which makes sense), then you get a similar pop-up when starting the emulator, which makes you think it may be a HAXM / KVM issue, which its not.

Hope this helps someone.

score 1 · Answer 5 · answered Nov 23 '22 at 06:30

Update Bios Setting

Power on the system and press[delete] key to enter BIOS [EZ Mode]
Press [F7] key to enter BIOS [Advance Mode] as below picture： (If press [delete] key to enter [Advanced Mode] directly and then no need to press [F7] key any more)
Select [Advanced] page and click [CPU Configuration] item
Select [Intel(VMX) Virtualization Technology] item and set to [Enabled]
Press [F10] key and click [OK] ,the system will auto reboot

Thank you @Falansh Siddh Its work perfect at my side – Yogesh Bangar Nov 23 '22 at 06:31 — Yogesh Bangar, Nov 23 '22 at 06:31

score 0 · Answer 6 · answered Nov 19 '17 at 20:13

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On Mac OS, After installing make sure to allow Intel HAXM under "Security & Privacy".

This was the only way I was able to run the Android Emulator :)

answered Nov 19 '17 at 20:13

Crysfel

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I'm trying to allow but it doesn't anything [like this screencast](https://d3vv6lp55qjaqc.cloudfront.net/items/2x3z0p1U3r2o390x0d1t/Screen%20Recording%202017-11-25%20at%2008.22%20PM.gif?X-CloudApp-Visitor-Id=1399595&v=e4263c32). What should I do? – fatihturan Nov 25 '17 at 17:25
Maybe try to restart your mac? That button should work :o – Crysfel Nov 26 '17 at 02:13
I found a solution from [here](https://blog.celogeek.com/201708/672/android-studio-emulator-haxm-on-mac-os-high-serria-10-13/) which recommends disable MacOS system protection (only for Kernel Extensions) and its worked. But I'm worried about this way for decreasing for my security. :( I hope I can find a safer way in future. – fatihturan Nov 26 '17 at 09:59

score 0 · Answer 7 · answered Nov 29 '17 at 03:09

Reinstalling and restarting did not work for me. Instead, I had to start my Mac in Recovery Mode (restart & press ⌘+R until Apple logo appears). Then open terminal from Utilities drop down menu. Type and run:

csrutil enable --without kext

You will get some warnings and instruction to restart for the changes to take effect. Restart and the emulator will run this time.

Reference: https://blog.celogeek.com/201708/672/android-studio-emulator-haxm-on-mac-os-high-serria-10-13/

score 0 · Answer 8 · edited May 29 '18 at 19:22

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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.

edited May 29 '18 at 19:22

Jean-François Fabre

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answered May 29 '18 at 18:58

user9573646

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chown: -R: No such file or directory chown: /dev/kvm,: No such file or directory – Yosra Nagati Feb 03 '19 at 09:34
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This only works if /dev/kvm exists, which in quite some cases it doesnt. – Isac Oct 24 '20 at 15:44
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My KVM doesnt exist on Ubuntu 20 – Michael Paccione May 07 '21 at 19:22

score 0 · Answer 9 · answered Jul 15 '19 at 08:43

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I couldn't install mine because I had HyperV enabled on my machine. Removed it and I was able to install the HAXM from the following link:

https://github.com/intel/haxm

answered Jul 15 '19 at 08:43

Prince Radebe

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score 0 · Answer 10 · answered Oct 03 '20 at 09:23

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Either your CPU does not support virtualization, or it is disabled in the bios. Go into your bios and see if you can find a setting to enable it.

answered Oct 03 '20 at 09:23

Rhibi Hamdi

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score 0 · Answer 11 · answered Apr 19 '23 at 02:56

A quick solution that worked for me was to go to my PC BIOS which i'm running an Ubuntu OS on and shutting it down and turning it on pressing the F10 key which boots it up to the BIOS and navigate to Advance Option > System Options and enabling both Vitualization Technology(VTX) and Vitualization Technology for Directed I/O(VTd) then save and exit and this should restart your PC and now try running the emulator.

score -2 · Answer 12 · answered Nov 04 '16 at 21:21

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I tried reinstalling HAXM a few times but kept getting the errors.

In my case I actually had to go into Bios Settings and enable Virtualization.

It worked for me. Just in case this helps anyone.

answered Nov 04 '16 at 21:21

makthrow

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This is for OSX and your solution is a windows solution – Jesse Onolemen Dec 17 '16 at 16:24

Android Studio Emulator "/dev/kvm is not found"

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