Develop Reference

Unfortunately, your computer does not support hardware accelerated virtualization. in ubundu 14.04

Unfortunately, your computer does not support hardware accelerated virtualization.
Here are some of your options:
1) Use a physical device for testing
2) Develop on a Windows/OSX computer with an Intel processor that supports VT-x and NX
3) Develop on a Linux computer that supports VT-x or SVM
4) Use an Android Virtual Device based on an ARM system image
(This is 10x slower than hardware accelerated virtualization)

Either your device has HAXM turned off in the BIOS, or the CPU doesn't support HAXM. In the first case, go into BIOS and turn it on. In the second, you can't use the emulator and have to use the much, much slower emulator (I suggest sing a real device rather than that, that's how slow it is).

No hardware virtualization but how to install haxm?

For installing android studio haxm I see there is a need of hardware visualization but my computer does not support hardware virtualization. Do I have any way to install haxm or any alternative platform to code for android ?

If your computer doesn't support hardware virtualization, you won't be able install HAXM, but it doesn't mean that you won't able to run Android emulator.
Notice that:
Intel Hardware Accelerated Execution Manager (Intel® HAXM) is a hardware-assisted virtualization engine (hypervisor) that uses Intel Virtualization Technology (Intel® VT) to speed up Android* app emulation on a host machine. In combination with Android x86 emulator images provided by Intel and the official Android SDK Manager, Intel HAXM allows for faster Android emulation on Intel VT enabled systems.
From: https://software.intel.com/en-us/android/articles/intel-hardware-accelerated-execution-manager
Just install Android Studio and when you would create emulator, be sure that it is ARM based, not x86 or similar. Your emulator would load and runs slower, but it would work good enough.
You would also able to run Genymotion Android emulator, but it would be able to emulate only one processor of your virtual device.
Hope it help

Error by running the app in emulatoor with AndroidStudio

I have Winows 7 pro with an AMD processor. When I run app with emulator from AndroidStudio, I get:
emulator: ERROR: x86 emulation currently requires hardware acceleration!
Please ensure Intel HAXM is properly installed and usable.
CPU acceleration status: HAX kernel module is not installed!
I found this, but when I run dism.exe /Online /Disable-Feature:Microsoft-Hyper-V, I get error
Funktion "Microsoft-Hyper-V" is unknown
I also not have "Virtualization Technology" in BIOS.
How can I use AndroidStudio with Windows 7 with AMD.
Robert

According to the documentation:
Before attempting to use this type of acceleration, you should first determine if your development system’s CPU supports one of the following virtualization extensions technologies:
Intel Virtualization Technology (VT, VT-x, vmx) extensions
AMD Virtualization (AMD-V, SVM) extensions (only supported for Linux)
Hence, if the documentation is correct, you will not be able to use the x86 emulator on your AMD CPU on Windows 7.
Your options are:
Use the ARM emulator (slow but works "out of the box")
Try to follow the instructions for setting up x86 support anyway, and see if the docs perhaps are out of date
Try a third-party emulator, like Genymotion, and see if it supports AMD better

You have to install the intel HAXM for the accleration. you have to go to your sdk. then follow the steps:
> Go to sdk installed directory
>extras
>intel
>Hardware_Accelerated_Execution_Manager/
install here the intelhaxm-android, it will fix your problem
if its not helpful then you should install this and this. This is 100 % faster or you can read more about virtualization on AMD on this Link AMD Virtualization problem

VT not supported while installing HAXM

I am trying to install intelhaxm-android in my machine. It is giving me error VT-x not supported in my computer (similar to this question and this too)
I tried every solution given there:
Enabled Virtualization from BIOS
Turned off the Hyper-V by cmd line
Enabled Execute Disable bit (as suggested on intel guide)
It is not working out for me. Please someone help, what could be the possible problem in my case, and if someone could suggest a solution, would be great.
My machine is HP Pavilion g4 Notebook PC/Windows 7 Home Basic 64-bit/AMD A4-3330MX APU

It caused by your APU/CPU type. From Intel® Hardware Accelerated Execution Manager (HAXM) official website:
Important:
Intel HAXM cannot be used on systems without an Intel processor, or with an Intel processor that lacks the hardware features described in the "Hardware Requirements" section above.To determine the capabilities of your Intel processor, visit http://ark.intel.com/
Additionally, Intel HAXM can be used only with Android* x86 emulator images provided by Intel. Intel HAXM cannot be used with ARM* Android* emulator images or non-Intel x86 Android* emulator images.
But your processor is AMD, not Intel. It means, you need to upgrade your Notebook PC's processor to Intel.

Basically you want to install software for intel processor, but you have AMD. According to Android emulator documentation.
Virtual machine acceleration for Windows requires the installation of the Intel Hardware Accelerated Execution Manager (Intel HAXM). The software requires an Intel CPU with Virtualization Technology (VT) support.
So you basically need Intel processor for x86 virtualization.
In you case I'd recommend you to use Genymotion emulator. It usually works faster than native Android emulator with HAXM and uses Virtualbox virtualization technology, so can be run on your processor. It's also cross-platform.

Is Intel Virtualization Technology for emulating android in eclipse

Hi I am getting error "Open HAX device failed" and on research on internet I realized "Intel Virtualization Technology" might be required for emulating android in eclipse. I have PC with Intel Pentium 4 CPU which does not support "Intel Virtualization Technology" is there a way to have android application emulated on such PC?

You can try enabling Intel VT-x from your system's BIOS. (Here's a guide)
If that doesn't work, just use an ARM (armeabi-v7a) image. You can download one from your SDK manager and then select it under the CPU/ABI option when creating your Android Virtual Device.

Check here to make sure your processor support Intel Virtualization technology. Without this hardware requirement it is not possible to HAXM to make your emulators run faster. HAXM working has nothing to do with Intel Atom x86 system images. It depends on the Virtualization technology supported by your processor.