Disable KVM acceleration? - Android Studio

I have a VirtualBox running, and for running Android Studio emulator I'm either getting ioctl(KVM_CREATE_VM) failed: Device or resource busy or (upon unloading KVM modules) KVM is required to run this AVD.
I don't want to swap VB with QEMU (at least not now), and for my current purposes I'm fine with unaccelerated emulation for x86 Android. So how do I disable acceleration?
One way I see is probably to download an ARM, so acceleration wouldn't be possible for x86 host, but it's an inelegant solution for different reasons.

Downgrade to Android Studio 1.4 (delete Android Studio 1.5 installation, download zip from http://tools.android.com/download/studio/builds/1-4-0, follow installation instructions).
Follow Stuart Axon's instructions above.
Gabor as far as I can tell is correct (and addresses the OP's question) - the option to use this acceleration by starting the emulator from within Android Studio 1.5 has been removed.
(Weirdly, I don't seem to be able access the acceleration when starting the emulator from the command line once Android Studio 1.5 has been installed - but maybe I'm wrong. Hopefully if I'm wrong someone who knows better will give an answer rather than just leaping at the chance to down vote. Glory to the downvote! Surely there should be badges for down voting: Gold 'downvoted 500 first questions', silver 'downvoted a question to -100', bronze 'downvoted a novice user into resigning'.)

Related

Linux ON droid not IN android question????

Ok, this goes out to any and all DEVs out there. We all know by now that we (some people not me) can run linux within android using the loop mounts, vnc viewer, etc... Now how about REPLACING android with a linux distro like debian or maybe even what these guys use http://openpandora.org/ ..... its linux based and has an arm CPU.. Any way I'm talking about flashing over android wiping the internal sorage and installing linux on it or even using the boot loader to flash over android???, of course this is getting rid of any 3g connection and phone usage. I understand that, I am talking about giving our RETIRED droid 1s a use. I wanna see my D1 run a linux distro in full hardware mode NO MORE ANDROID. now dont get me wrong I love android as much as the next guy, but why now flash something else to it???
Another link I found, this is for windows mobile but hey, similar idea.
http://wing-linux.sourceforge.net/trac/wiki/FAQ
P.S. I AM NOT A DEV JUST AN IDIOT WITH AN IDEA!! my ignorance is NOT bliss and I would love to know if this is even possible. I'm willing to help ANY WAY I CAN. lol
THANKS!!!
I don't think it's possible. Because of the locked bootloader we're forced to use Motorola's bug-ridden Kernel and as Android's Kernel is a heavily modified Linux Kernel it most likely won't run an ordinary Linux distro.
But I'm no expert either
Milestone is locked, Droid is not ...
Maybe this will help (if you don't know german, you can use Google Translate):
http://www.android-hilfe.de/anleitu...debian-chroot-mit-lxde-auf-dem-milestone.html
Thanks for the replies. Again the USA Droid 1 is nit locked or at least has been completely unlokcked. I've read a million "run debian on android" posts... I don't need to know German to see that the post above is the same thing. Like I said before I have NO INTEREST IN RUNNING LINUX ON ANDROID. I want TO REPLACE android completely with Linux to make a device like the openpandora handheld from my first link.
Any one up to the challenge????
Thanks again!
Really, no one??
I've been running Debian on my Droid booting from the SD card for a while, more recently trying Arch Linux after realizing that anything optimized for ARMv7, VFPv3, NEON, or Thumb-2 (I'm not sure which unfortunately) won't boot because of a page fault or something. Ubuntu, MeeGo, and Angstrom just kernel panic and don't give any useful information even at the highest debugging level. I'm back to using an ARMv5te Arch Linux build (http://archlinuxarm.org) although I could just as well use Debian. I really wish Ubuntu worked for multitouch.
Well, I got the touchscreen calibrated! I forgot that my screen rotation hack only rotated the framebuffer It's stuck in portrait for now. I decided to use mtev (MeeGo's multitouch X11 input driver) after being fed up with evdev's aversion to being rotated, but now that I'm back to the stock portrait rotation evdev should work fine.
If you want instructions, either PM me or wait until I post a full guide and/or my patched kernel tree. It's not super difficult, but it's a lot of command line use and compiling.
What works:
*CPU and SD card (obviously )
*Touchscreen (single touch/portrait only for now)
What needs work:
*Keyboard mapping is wrong, the number keys and symbols don't work. I need to figure out how Android handles Alt. I had to patch the GPIO keyboard driver because the keyboard worked in the console but not in X11, which expects EV_SYN.
*Sound is OSS only, but there is no mixer device, so aumix is useless and there's no volume control or sound output.
*I haven't tried the SGX driver, so I can't comment on hardware acceleration yet.
*Battery charging relies on battd, which is a proprietary Android binary from Motorola. It might run on Debian with "ls -s / /system" and the creation of the socket it expects (init.sholes.rc I believe), but I'm not getting my hopes up.
Untested:
*WiFi (needs firmware, but should work)
*Bluetooth
*Calls/data
*Sensors (although the accelerometer and compass seem to be recognized by evdev)
I'll upload my kernel, either as patches or on GitHub (or binaries if there's enough demand) once I get around to fixing the keyboard issue. Fingers crossed that I don't get carried away cleaning up the kernel, or worse yet, give up...
This is incredible news! I'm so glad to hear it. Of course you are running in hardware mode? Not through android? If so I'm super exited about this! I love arch Linux, I run it on all my computers and I understand it more than any other distro I've tried. I would love to give it a shot, though I'm not that great at compiling I think it will be worth it.
As I said before I am in no way a dev or even a Linux pro, but I can get by and if theres any way I can help this project become "complete" I'm willing to learn what ever is necessary to do so.
Also were u able to get an x server running? Possibly a DE? That would be crazy awesome.
Thanks a million, looking foreword to work with you and make this happen!
For anyone who's interested, I put together a quick package containing my kernel patches, configuration notes, and an automated kernel build script.
It's pretty self-explanatory aside from the installation of the root filesystem, which I leave up to your imagination
As I've probably repeated several times now, I've run Debian and Arch Linux natively on my Droid with my patched kernel (no chroot or VNC "hack"). With enough determination, it's possible to run practically anything on it - personally, I'm determined to get Ubuntu on it.
WOOT... insta-fail for me LOL you have it set up to work in specific directories? I thought i placed everything right but I guess not.. I got an error on the first line of output lol
Welcome to gTan64\'s lazy Droid kernel compiler\!
build.sh: line 5: [: missing `]'
build.sh: line 5: -z: command not found
build.sh: line 5: -z: command not found
Entering $WORK
Applying patches
build.sh: line 16: /*.patch: No such file or directory
mv: cannot stat `/arch/arm/boot/compressed': No such file or directory
cp: cannot stat `/compressed': No such file or directory
Setting up build
cp: cannot stat `/GNUmakefile': No such file or directory
cp: cannot stat `/sholes_config': No such file or directory
FIXME! No numeral or symbol input until someone finds a third-level
modifier key to use instead of AltGr for the keyboard.
cp $MISC/defkeymap.map $K_SRC/drivers/char
Building kernel!
make: *** No targets specified and no makefile found. Stop.
Kernel build done!
You have done something amazing, I'm just to stupid to figure it out my self. XD
I can understand why you would want ubuntu with all its pre-setup glory and support for nearly all hardware but dont you think its a little heavy for this hardware? lol I doubt you would try to use the Unity UI but I doubt that alone would even fit in ram LOL you could just use the ubuntu packages and drivers with debian maybe?
THANKS AGAIN!!!!
That's what happens when I don't test my own scripts
I was thinking too much about making it easy. Just try applying my patches to your tree manually.
Code:
cd kernel_src
patch -p1 <../patches/first.diff
patch -p1 <../patches/next.diff #and so on...
#Obviously, substitute the paths of the actual patches ;)
#Finally, copy sholes_config to .config and invoke 'make'.
It's actually much simpler than my script makes it, and you don't need my convoluted folder setup.
UM lol I cant find any patch files? are they in the ZIP? or do I have to obtain them elsewhere?
I can tell this is gonna be a hell of a project LOL
THANKS!!!
"Duh" moment - I used the .diff file extension instead of .patch
I'm such a scatterbrain... Remind me not to release anything before testing
EDIT: Strike that, reverse it. They're .patch files.
I AM BLIND lol I found them... BUT.. when I try to patch. terminal just seems to lock up... I press enter, the curser moves to the next line but it doesnt do anything. lol how long should 1 patch take?? its been about 10 minutes and I leave it be for now
EDIT:
LOL i forgot the "<" in the command OOPS but I'm not seeing any .config file or folder in the source to copy the sholes_config too. yes I have show hidden files on.. PS unfortatly usinf Fedora 15 gnome 2...... (on server so I can work on this anywhere through vnc )
THANKS
When I said "copy sholes_config to .config", that's literally what I meant. .config is the Linux kernel build configuration file, not a folder.
'cp /path/to/sholes_config .config' from your kernel tree should do it.
Oh, I forgot to mention that you need an ARM cross-compiler/toolchain. I use the gcc-arm-linux-gnueabi package in Ubuntu, but I don't know what the Arch equivalent is off the top of my head.
The "GNUmakefile" is just a convenience, it exports "ARCH=arm CROSS_COMPILE=arm-linux-gnueabi-" before calling the actual makefile. If you don't have an ARM cross compiler in your path, it won't build at all. If you do, modify CROSS_COMPILE to point to it - on some systems it's called arm-unknown-linux-gnueabi, etc. etc.
Let me know if you get anywhere before it errors out.
OK I put the config file in the kernel_src but unfortainatly I'm using Fedora 15 XP I installed arm-gp2x-linux-gcc which is the fedora arm gcc I guess... lol so wha would I edit in the .config to make it point to arm-gp2x-linux-gcc. Its not my first attempt to compile an android kernel but I've never been succesfull LOLOL
thanks
I'm pretty sure that toolchain won't work - the GP2X was ARMv5 IIRC, so unless it's a newer build of GCC (4.3 or higher) and you're absolutely sure it supports the ARM EABI and the ability to generate ARMv7 instructions (which is unlikely if it's pre-4.1), I would recommend a newer toolchain.
CodeSourcery makes a pretty solid one: https://sourcery.mentor.com/sgpp/lite/arm/portal/release1803
If you end up using it, you can change the second line in GNUmakefile to "CROSS_COMPILE=arm-none-linux-gnueabi-". Don't worry about changing .config.
Well I DLed the linux/GNU installer and it gave me "arm-2011.03-41-arm-none-linux-gnueabi.bin" LOL
so I was thinking would it just be easier to just use my lappy with crunchbang (debian based) so I can follow ur instructions with deb / apt-get LOL fedora is a ***** and it dont have what I need... I cant find an arm v7 cross compiler for it
thanks
.bin files are the Linux equivalent of Windows EXE installers. Run it like this:
Code:
#cd /path/to/installer.bin
./installer.bin
#substitute the actual name, of course.
It needs root permissions if you want to install it to /usr/local (sudo ./installer.bin or su -c 'sh installer.bin'). You can also install it to /usr, but that will make it more tedious to uninstall later. If you decide to install it in your home folder - say ~/toolchain - you don't need root permissions, but you will need to add ~/toolchain/bin to your path:
Code:
export PATH=$PATH:$HOME/toolchain/bin
To be honest, I prefer Ubuntu to Fedora/OpenSUSE/$RPM_distro, so if you have access to a Debian or Ubuntu system, using that would make my life easier
Omg duh... the "non_Linux" part of the name true me off lol i'll start doing this on my laptop it's deb based crunchbang. I prefer anything over rpm distros too but it was a quick painless install on my server XP thanks ill try this when I get home
Sent from my DROIDX using XDA App

[Q] C/C++ development for the HD+

(I have to post here as I can't yet post in the dev forum.)
I have a set of command line executables (let's say something very broadly similar to Busybox though it's not really the same) written in C/C++. I compile these under Windows and Linux with MSVC or MinGW and gcc, respectively. There's no GUI at all, it's all pure command line stuff making heavy use of the respective C/C++ runtime libs.
Let's say I want to compile these for the likes of the HD/HD+. Would I need to install the whole Android dev kit (of which I know precisely nothing at this point in time)?
Or is it possible to cross-compile such executables from a Linux desktop machine? Perhaps naively, I assume it should be.
TooMuchSloeGin said:
(I have to post here as I can't yet post in the dev forum.)
I have a set of command line executables (let's say something very broadly similar to Busybox though it's not really the same) written in C/C++. I compile these under Windows and Linux with MSVC or MinGW and gcc, respectively. There's no GUI at all, it's all pure command line stuff making heavy use of the respective C/C++ runtime libs.
Let's say I want to compile these for the likes of the HD/HD+. Would I need to install the whole Android dev kit (of which I know precisely nothing at this point in time)?
Or is it possible to cross-compile such executables from a Linux desktop machine? Perhaps naively, I assume it should be.
Click to expand...
Click to collapse
You can cross-compile. Its been a while since I did it but I used CodeBench. They have a free version.
Sent from my Nook HD+ running CM10.1 on emmc.
Thx for that, this is really good news. I was/am not keen on installing, investigating and battling a (to me) new tool chain. If cross-compiling works at all I am sure 'll get it up and running with what I have and know.

[Q] Setting up a test environment

Can anyone advise this rookie user how to set up a test environment to use with an Android Studio project?
I recently installed Android Studio on my Windows 7 laptop and put together my first simple app. When I tried to debug it, I was offered two pre-configured test environments. The first was "Nexus 5 API 21x86" but when I tried to use that one it told me I needed HAXM. After much research I worked out what I needed to do to install HAXM but the installation file gave me the following error message:
VT_Not_Support = This computer does not support Intel Virtualization Technology (VT-x). HAXM cannot be installed."
I therefore turned my attention to the second option "TestDevice". When I tried to run that, Android Studio reported:
emulator: ERROR: This AVD's configuration is missing a kernel file!!
emulator: ERROR: ANDROID_SDK_ROOT is undefined
I Googled the error and found the advice that I needed to install "ARM EABI v7a System Image" but when I ran the SDK manager it told me that this component was already installed.
Can anyone please tell me either how to overcome the ANDROID_SDK_ROOT undefined problem or advise how otherwise to set up an emulated test environment that works on my computer.
I am an experienced programmer but a complete novice when it comes to Android Studio, all the associated applications and Android devices in general.
Many thanks in advance for your patience.
Keith
writerman said:
... following error message:
VT_Not_Support = This computer does not support Intel Virtualization Technology (VT-x). HAXM cannot be installed."
Click to expand...
Click to collapse
Keith, have you tried enabling VT-x in your BIOS settings?
Thanks for the suggestion. I wasn't aware of this BIOS setting. I will give it a try but may not have a chance to try it out until the weekend
This should do the trick if you have compatible CPU.

Intel HAXM

Hi folks,
A few hours ago I download and installed Android Studio and the SDK. While trying to launch a virtual device from Android Studio, I got this error: (sorry, I can't post images, it's my first post here )
"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 googled around, and I checked:
0) My architecture supports VT-x (I have an i5 on an asrock h87 pro4)
1) Virtualization is turned on on my bios
2) HAXM Installer is installed in SDK Manager
Nonetheless, I still get an error when I try to install intelhaxm-android.exe (located in [sdk-folder]\extras\intel\Hardware_Accelerated_Execution_Manager).
I checked with Speccy, and it looks like my Virtualization capabilities are there, but still turned off...
Any idea?
Thanks!

[REQUEST] Compile for any phone script

I propose a single script that generates images for any android compatible phone. It will (maybe?) require a bootloader unlock, the kernel source, and a cached 'update.zip' or internet connection, but not much else.
Essentially, all you will need to do is plug in your phone and run the script as an admin (sudo sh ubuntuphone-auto.sh). Then, the script will install all of the (cached) dependencies, automatically download (or used the cached one) the system's flash/update zip, and compile ubuntu with the contained images.
It should also do a sideload of a processor test (if compatible) and warn of currently incompatible or too hot/slow hardware while it's compiling on the computer.
This will help clear out that system fragmentation thing where it's hard to develop for all systems. We should add options for a bunch of android app stores to be installed. (Something like 'do you want the play store' and if they press enter it skips it. The generic install without any extras will need you to put a --generic or hold down the enter key)
The script will be just that - a bash or python script that has a comment at the end of each line with a line number and a note briefly explaining what you can change on that line.
We eventually could make it not just for ubuntu, but for every arm based OS like CM13, FireOS, etc.
However, things should start small... Let's just start with Ubuntu.
runed.OS said:
I propose a single script that generates images for any android compatible phone. It will (maybe?) require a bootloader unlock, the kernel source, and a cached 'update.zip' or internet connection, but not much else.
Essentially, all you will need to do is plug in your phone and run the script as an admin (sudo sh ubuntuphone-auto.sh). Then, the script will install all of the (cached) dependencies, automatically download (or used the cached one) the system's flash/update zip, and compile ubuntu with the contained images.
It should also do a sideload of a processor test (if compatible) and warn of currently incompatible or too hot/slow hardware while it's compiling on the computer.
This will help clear out that system fragmentation thing where it's hard to develop for all systems. We should add options for a bunch of android app stores to be installed. (Something like 'do you want the play store' and if they press enter it skips it. The generic install without any extras will need you to put a --generic or hold down the enter key)
The script will be just that - a bash or python script that has a comment at the end of each line with a line number and a note briefly explaining what you can change on that line.
We eventually could make it not just for ubuntu, but for every arm based OS like CM13, FireOS, etc.
However, things should start small... Let's just start with Ubuntu.
Click to expand...
Click to collapse
If that script had existed, we would'nt had a need in developers at all
This script would be a reality only in ideal world with open drivers. Because of rush in smartphone production we have binary blobs with tons of lags and devices with unupgradable kernels at all (that are VERY important for security).
the reality is that not all companies release AOSP sources for their device, this devices need patches in order to provide all functions of phone, and in fact enthuthiasts do a little reverse-engineering work where possible.
This script isn't possible now, maybe in few years when machines will learn reverse-engineering and some logic.
But generally idea is nice, implementation will lack for some time
Haha, look! Ubuntu just made one of these! It only works for their phones, though.
runed.OS said:
Haha, look! Ubuntu just made one of these! It only works for their phones, though.
Click to expand...
Click to collapse
No, it doesn't work as you want.
You still have to download binary drivers and place them manually in corresponding folder. It doesn't automatically port ROM
Plus you have to download precompiled kernel for UT separately.
It's FAR for script you want.

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