Develop Reference

Android Emulator very slow on Ubuntu 20.04

My Android emulator runs very slow on my Ubuntu machine. I need it to run faster, because some apps are slowed down so much, that they change their behaviour (they use the camera).
System specs:
-x86_64
-Intel(R) Core(TM) i7-5600U CPU # 2.60 GHz
-20GB Ram
-512Gb HDD
I use Ubuntu 20.04 and Android Studio 4.1.1 (fresh installation).
I use this AVD: Pixel2 1080 x 1920: 420dpi API 28 Android 9.0 (Google X86_ARM) CPU/ABI: x86
In the extended menu I chose Graphics: Hardware - GLES 2.0. I also disabled GPS, audioInput and audioOutput with no performance improvements.
I did not try this, because selecting Hardware - GLES 2.0 worked for me and the avd started normally (but still very slow).
Other system images are equally slow though.
I tried:
sudo modprobe msr
sudo rdmsr 0x3A
and it returns 5, so VT-X is enabled
Is the hardware the bottleneck, or is something configured wrongly? Maybe it is the HDD that slows the emulator down? I tried running the emulator on Windows and it's insanely fast. The windows machine is stronger though.
Update 11.12.2020:
I also verified my KVM installation using this command:
./emulator -avd Pixel2Api28Arm -accel-check
It returned this:
28Arm -accel-check
accel:
0
KVM (version 12) is installed and usable
accel
So this does not seem to be an issue.

I was having the same problem (KVM working, but slow x64 emulator on x64 host), and found a solution here, which is to disable automatic snapshot creation.
Run your emulator, and click on the three dots (...) to open the settings:
In the settings, click "Snapshots":
Switch to the "Settings" section on top:
Set "Auto-save current state to Quickboot" to No:
It'll ask you to restart the emulator, click Yes:

Cannot start android emulator with AMD Ryzen 2600, SMV, Hyper-v and windows hyperv platform enabled

I can't start android emulator and I don't why, because I tried all solutions found here and in other sites, but nothing.
I have a CPU AMD Ryzen 2600
MB ASrock B450 gaming k4
Android Studio 3.4.1
Bios MB 3.30 (last one)
SMV enabled
Windows 10 build 1903 18362.239
Hyper-v enabled
Windows Hyper-v Playform enabled
I tried also disable one feature but nothing changed, and the strange thing is that VirtualBox start without problem.
Can anyone help me?

Why is HAXM refusing to run on my ryzen 2600x system?

System info:
AMD Ryzen 5 2600X
PRIME X470-PRO Mobo
8gb ddr4 kingston hyperx
NVIDIA GeForce GTX 970 4GB
Windows 10 pro Version 10.0.17134 Build 17134
I would have preferred to add this as a comment to answers on this post, but I don't have 50 reputation.
I am stuck on step 2 of this answer.
I've tried disabling Hyper-V and Windows Hypervisor Platform, all virtualization options are enabled through BIOS, but HAXM refuses to install.
This comment indicates the exact opposite, and that does not work either.
This comment says AMD only works on Linux. But the linked documentation they point to does not mention this restriction. So it's possibly been patched.
EDIT:
just going to add random extra pieces of information that I find about my system to help answer questions that may come up.
Virtualization enable
My Windows features (and also with windows hypervisor platform enabled, still returns error after reboot)
I ran the following command before going into my windows features options, it appeared to do nothing however as Hyper-v was still showing as enabled in the GUI:
dism.exe /Online /Disable-Feature:Microsoft-Hyper-V

Emulator issue in Android studio?

issue:
Your CPU does not support required feature(VT -x or SVM).
when am creating an emulator in my computer facing this issue, how can I resolve this issue?
I am using a Windows2008 PC; I have AMD A4-6320 APU with Radeon(TM) HD Graphics 3.80GHZ processor.
In my Control panel > Programs and features there is no Hyper-V feature. How to install HAXm on my computer?
For android studio emulator, the AMD processor is supported or not?
can anyone solve this ?
All are saying about intel system am using AMD processor can you tell me about AMD processor?

Please check this video How to install HAXM
Also if you couldn't find the HAXM in the SDK Manager, then download it from
https://software.intel.com/en-us/android/articles/intel-hardware-accelerated-execution-manager
After that you have to enable VT-X from The BIOS, check this
https://www.youtube.com/watch?v=3irpIFya_lk

VT is Virtualization Technology. It is processor capacity. Google your processor model that have or not VT support.
If support! You need to enable VT from bios. To do so
1. Restart your computer
2. Press F2 when you computer boot
3. Find Intel Virtualization Technology and enable it
4. Save and exit by pressing F10
Then Run emulator in android-studio
if any problem please fell free
good luck..
I google it for you that your cpu has VT red your processor specification
so try the step i describe i hope it will be ok...

With an AMD processor and on Windows you have 4 options:
Run the emulator using an ARM image (quite quite slow)
Use another emulator as can be Genymotion. Warning about Genymotion: There is a free version which has limited functionality of the phone and there is a paid version that allows full control of the device.
Use an actual device instead of the emulator
Activate the SVM Mode from the BIOS (as others have already commented). To do that:
You have to restart your machine.
Enter in the BIOS (usually pressing F2 or Del).
Look up the SVM or Secure Virtual Mode and enable it!

Android emulator x86 HAXM GPU Windows 7 crash BSOD

I don't know English but I will try to explain.
I use last version Android SDK, run from AVD Manager emulator intel x86 with intel HAXM and it work Fine, but when I Enable host GPU then windows 7 crash BSOD
This happen on Windows 7 x32 and x64. I update all drivers and update BIOS, but this not help.
Intel Virtualization Technology enabled in BIOS.
My notebook: HP ProBook 4530s, core i3-2330m, amd radeon HD 6490M, 4gb ram
May anyone know how to solve this problem?
On my desktope pc emulator x86 with HAXM and host GPU enable work fine.
I read somewhere that trouble because of notebook have 2 GPU discrete and integrated...
BSOD screen: http://postimg.org/image/805pl14jx/

This problem happen ONLY when PC out from sleep mode! Need reboot pc if it was in sleep mode!

I've been experienced this on my machine running Windows 10 (Macbook pro bootcamp). But after a lot of googeling I've found the solution on a medium post.
The solution consists in restarting the Intel HAXM service to restore its state as it is before running any virtual machine after starting a fresh Windows session.
Open a command prompt with administrator rights and run the following:
tasklist | findstr "qemu" >nul || net stop "IntelHaxm" >nul && net start "IntelHaxm" >nul
You should now be able to start the emulator without getting any bluescreen.
You could also create a batch file that runs as a service.
Source: https://medium.com/#andrea.bresolin/windows-10-on-mac-with-boot-camp-making-intel-haxm-work-without-crashing-the-system-39555854f815

Check your BIOS for Intel virtualization technology and enable it if it's available. Then install necessary drivers from sdk manager.