Related
I installed code-server on a Pixelbook Go (x86 Intel i3 with 8GB RAM, 64 GB SSD). I installed it as a user, not a root, not sure if that's a problem or not. The code-server service is enabled and starts when I start the Developer Linux VM (penguin). As far as I know I'm upgraded to the latest Crostini (104.0.5112.83) and the VM is a Bullseye Debian, I installed it not so long ago.
Outside of the VM I started the Chrome browser and I can view the GUI portion of the code-server by visiting http://localhost:8080 (as per .config/code-server/config.yaml). I installed the Flutter and the Dart extensions in the GUI. I also opened the root folder of my Flutter project (which is a regular project (https://github.com/TrackMyIndoorWorkout/TrackMyIndoorWorkout): no embedded or multi-module things in it).
I connected my phone (OnePlus Nord, Android 12), it displayed the bottom sheet related to the connection and I allowed Transfer. The Crostini detected this connection and popped up a notification about it. I could use that notification bubble to shuttle to the connected USB devices settings and enabled the Nord device.
Here is where things started to differ from starting the "regular" VS Code (installed into the penguin VM from a package) itself: VS Code shows a device selection in the footer section, which lists target devices such as the Pixelbook Go and also the Nord (AC2003) - see screenshot later. However the GUI of the code-server doesn't have selector for the devices. When I start to initiate a debug session it displays an error message:
Unable to launch Flutter project in a Dart-only workspace. Please open a folder close to your Flutter project root or increase the value of the "dart.projectSearchDepth" setting.
Here is how it should look like in the "regular" VS Code:
I opened the root folder of the Flutter project just as I did when I use the "regular" VS Code, so this project search depth doesn't make any sense to me, the dart files are there including the main.dart in the lib folder. And the VS Code kinda works, except that the build hangs due to possibly low resources, hence I'm trying to get code-server working so I can migrate at least the VS Code GUI portion out of the anemic VM. I suspect that the main problem might not be the Flutter / Dart settings, but first I have to figure out whey the GUI doesn't show a device selector. Then I can lament on this error message if still persists.
How to proceed?
Every time I run the emulator it runs normally at the beginning but after a couple of minutes it crashes and it's giving me this error:
emulator process finished with exit code 1073740791 (0xC0000409)
I am using windows 10 home edition. virtualization is enabled in bios. I don't have any other virtualization software installed (like virtual box).
any idea why this is happening?
It seems a buggy graphic card driver can cause a similar problem. I am not sure if this is generated your problem here or not, but it is worth to say; If you have an NVIDIA graphic card with the driver version of 378.49 (there may be other versions too!), you may experience this error due to some incompatibility with java.
Please update your graphic card driver or rollback it to version an older stable version and try again!. And read here for more information.
I might have an Idea what your problem is:
Restart the adb Server, you can do so by using the command Prompt in the following way:
First go to C/users/(YOUR USERNAME)/AppData/Local/Android/Sdk/platform-tools with the cd command.
Then just type adb kill-server, and adb start-server, so like this;
cd C/users/(YOUR USERNAME)/AppData/Local/Android/Sdk/platform-tools
adb kill-server
adb start-server
If that doesent work try to wipe and cold boot described in this question.
Try this :
Go to Tools ==> SDK Menager ==>Android SDK
(Appearance&Behavior=>System settings=>Android SDK)==>SDK Tools==>Intel x86 Emulator Accelerator(install this).
It will solve your problem.I hope it helps.
Here are a few things you can try:
Go to AVD manager and open settings for your virtual device. In the Emulated Performance section for graphics, change it from automatic to software.
Have a look at here. There could be an incompatability with other software incompatibility with other software such as Docker, Oracle Virtual Box and other products that use VCPU.
You could try a complete reinstall of Android Studio and make sure all updates are completed. There could be a bug in an older version of the emulator you are using that's fixed in a more recent release.
Edit
A couple more things you could try:
Open Android Virtual Device Manager, then click on options for virtual device, then wipe data, then cold boot.
Go to C:/users/(username)/AppData/Local/Android/Sdk/platform-tools in a terminal, then type adb kill-server, then adb start-server.
Edit
You could also try checking for memory leaks https://developer.android.com/studio/profile/memory-profiler and you could try increase the amount of RAM available for the emulator.
Go to Tools->Android->AVD Manager, then edit your AVD, then in the pop-up window click Show Advanced Settings, then finally increase the amount of RAM.
Edit
IT could be an issue with libGL or libstdc++. See here
It sounds like the emulator may have not installed correctly. Check these steps:
Ensure that you have installed Hyper-V . Documentation for running emulator on AMD
Then try this step to force a cold boot:
Android Studio Emulator and "Process finished with exit code -1073741511 (0xC0000139)"
If Its crashes again, then create a new emulator. You might also try and download a new image just to make sure that the one you installed is not corrupt.
You said you're using Windows 10? Error code 0xC0000409 is caused by a stack buffer overflow. It seems to have popped up a couple places all related by windows systems (might be totally irrespective of the android emulator). If this is the case I found a couple threads that might help solve your problem.
http://www.cplusplus.com/forum/windows/39061/
https://answers.microsoft.com/en-us/windows/forum/all/werfaultexe-the-exception-unknown-software/627da5c0-004a-e011-8dfc-68b599b31bf5?auth=1
http://windowsbulletin.com/solved-exception-code-0xc0000409-error/
https://www.tenforums.com/tutorials/16397-repair-install-windows-10-place-upgrade.html
I using AMD processor. I have installed everything related to eclipse perfectly. But I'm unable to start the emulator. program is hang and keep waiting for adb forever. The same issue in android studio also. Please give a solution.
I'm using a Android Studio on an HP x360, which is a nice little laptop but has a puny processor:). I spent ages getting the Intel Hax virtual machine thingy installed on my machine, as well as configuring bios (which I found AVAST blocked changes to, so had to uninstall it).
After probably hours this week (I'm new to Android) waiting for the emulator to do it's thing, start up, load program, and eat memory, I decided to plug in my phone (Moto-e).
This has made a massive improvement! Only takes a minute to compile and run now! You also have piece of mind that your app will run in the real world.
So as a newb to Android, I'd say don't bother with the emulator.... plug a real device in.
See here for setting up HAXM, if you have trouble installing, it may be antivirus etc blocking it....
Intel HAXM
All the best.
try these threads Virtualization threads
I have successfully downloaded and installed Genymotion and Virtualbox as well as a Virtual Device Image but I am unable to create a virtual device.I get an error message stating
Unable to create Virtual Device:
Failed to import OVA
My laptop Specs
8gb RAM
Intel Core i7 (Sandy Bridge)
Hardware Virtualization is enabled in the BIOS.
Deleting the Genymotion cached .ova file, deleting the corrupted deployed image, redownloading the image, and reinstalling it addressed the issue for me.
Note that the deployed images are under:
~/.Genymobile/Genymotion/deployed
the cached ova files are under:
~/.Genymobile/Genymotion/ova
I solved the problem.It was my mistake.
It works fine by running genymotion with administrative privileges.
I solved the issue deleting the deployed images in
~/.Genymobile/Genymotion/deployed
I didn't touch ova files
I just ran into this problem too, so just in case anyone needs it:
The reason why it needs admin privileges is probably because of your settings on where it store the virtual device..
Go to Settings - Virtual Box - and change your virtual devices storage area. I got mine set to something like \Program Files\Genymotion, that's why it needs Admin privileges. I only blanked the field, clicked ok, and it got set to the default which is in my home directory..
After that no need to run as admin anymore..
(I need 50 reputations to comment, so had to use this answer..)
I solved the issue myself by deleting all old devices (the folders of previously made devices) from my .android/avd folder.
In my case, the DHCP server was missing from Virtual Box's Host Only Adapter. I added a DHCP server at 192.168.56.100 with addresses from 192.168.56.101 - 192.168.56.254 and it came up.
I also had the issue. Had to delete Genymotion cached files/devices then redownload devices and reinstall.
We had the same issues, it was because we had wrong version of Oracle VM Virtual Box. Make sure you uninstall wrong version and re-install Compatible Oracle VM Virtual Box.
just delete the file in your ova and it should fix it, thats what i did, no need to run program under admin or anything. didnt delete my deployed files either. (I was trying to create new virtual machines not open them)
Have a look at this blog.
Genymotion is previously known as AndroidVM.
As the blog stated:
Known bugs (same as 20121119 release) :
Hardware OpenGL/Intel HD/Windows : On most Intel HD drivers running Windows, the AndroVMplayer might crash (in the driver DLL) when starting Android ; you may have to restart AndroVMplayer an important number of times before it suceeds
Hardware OpenGL/WebView : On some GPUs (mostly NVidia ?), the browser and all apps which use the WebView component might show scrambled HTML content
AndroVMplayer now support window resizing, as well as fullscreen mode ; to use AndroVMplayer in fullscreen mode, you have to :
select “manual resolution” and tick the “fullscreen” box
press F11 (Ctrl+F11 on Mac) to switch to fullscreen when the player window has appeared
When starting the virtual machine, AndroVMplayer now check different things :
If your AndroVM virtual machine doesn’t have the “hardware OpenGL” option enabled, it can enable it for you before starting the VM.
If your AndroVM virtual machine first network adapter is not configured, it can configure it for you (as well as create the host-only network for you).
To summarize that, with this new AndroVMplayer, to use OpenGL hardware you just have to :
Import the AndroVM ova in VirtualBox
Start AndroVMplayer, choose your resolution and the virtual machine you’ve just imported
Click “Run” and it should work
You can still use AndroVMplayer with non-VirtualBox systems (e.g VMWare) but, obviously, you won’t benefit from automatic VirtualBox configuration and VM start/stop ; in this case, you have to choose ‘none’ as the VM name and directly type the IP address of your virtual machine.
Please note that, due to the change in communication, old AndroVMplayer won’t work with 20130222 OVAs and old OVAs won’t work with 20130222 AndroVMplayer.
Disadvantage of deleting the deployed and .ova files is obvious i.e. you have to download the massive 200mb image again. A better choice is to :
Open genymotion and open settings --> virtualBox --> virtual devices browse and set the path to a folder which can be completely accessed without administrative pivileges e.g. for ubuntu set virtual devices path to any folder in your home directory for example /home/user/deployed and for windows you can use a folder like C://deployed.
That's it . Now you can use your already existing .ova file again to deploy image to new locatioin without any problem.
I followed following steps
I removed everything under {~/.Genymobile/Genymotion/ova} folder (with only doing this step it works sometimes)
removed everything under {~/.Genymobile/Genymotion/bin} folder
After which I downloaded the fresh copy and it worked like magic.
Hope this helps.
I solved this error message by fixing the path to the virtual machines folder (Setting > VirtualBox - Virtual devices). Yes, I had broken settings...
In case someone is using Mac OSX YOSEMITE or earlier. Follow this post. It worked for me. http://forums.macrumors.com/showthread.php?t=1196027
Run these two command in Terminal:
sudo chmod 755 /Applications
sudo chmod 755 /Applications/Virtualbox.app
Took me hours to get it to work!
Check if you have problem with your virtual device path under
Genymotion > Settings > Virtual Box > Virtual Device >
If it is still an issue remove files under ~/.Genymobile/Genymotion/ova
If it is still an issue remove files under ~/.Genymobile/Genymotion/bin
Remove Genymotion and all files under ~/.Genymobile/ & reinstall
If you have installed the Genymotion plugin without VirtualBox then make sure the version of VBox is compatible with the plugin, otherwise the plugin will not deploy the virtual device regardless of the OVA file.Install the latest versions of both if you are unsure
Once you verified the versions, you may need to either:
a: Give administrative privileges for Genymotion via properties
OR
b: Change the location for the deployed devices via Settings/VirtualBox to somewhere more accessbile like D:/GenyMotion VMs/
If both step 1 and 2 doesnt work for you, sadly you will have to clear the cache via Settings/Misc and reinstall the OVA file.Hopefully your efforts will be worth it. Good Luck.
It works fine by running genymotion with administrative privileges.
I solved it by deleting all of file in Ova,Templates and Deployed folder, I can run download and reinstall again and run without Administrative privileges
I solved this problem on windows setting up sdk path in configuration option.
Double check the virtual device you're trying to create has the same version on Genymotion that you have running.
I just upgraded to 2.1.1 but all the virtual devices I was trying to install were for 2.1.0. Downgrading Genymotion did the trick.
A very simple Solution that i just Tried is:
1) Delete your Instalation Folder at ~/Genymobile
2) Delete the Virtual Device Folder at C:\Users\ your_name\AppData\Local/Genymobile
3) Reinstall
4) Done.
Oracle VM ware has an update for Windows 10. I was getting this error until I installed this update.
I had the same problem because i had an old version of Virtual Box (4.0.0).
So, I uninstalled genymotion and the old version of VB,
and I installed genymotion with virtual box (5.0.28).
And Its worked fine.
This fixed the issue:
Just go to ~/.Genymobile/Genymotion/ova (Either you are on Mac OSX
or Windows, you can find this path by looking for Virtualbox path at
the Genymotion Settings, there is a path to Genymotion/deployed
folder, you should go to Genymotion/ova folder)
Open the ova file with your virtualbox.
At the Virtualbox startup dialog box, Appliance settings, It shows Guest OS type set to Other Linux 64, you should double click and change it to your OS type (e.g Mac OSX El Captain (64-bit)) and Import:
Now launch Genymotion and find the virtual device in the list of already deployed ones ready to run
Run the virtual device, after first run you get a warning saying Genymotion version does not match with Virtualbox version and choose Continue.
I hope it helps future visitors to this page.
Any of above solutions didn't work for me but I finally found it!
You should remove under folders in C:\Users\[your user]\VirtualBox VMs.
I hope it helps you.
First you go to ova inside the folder and delete all files
C:\Users\UserName\AppData\Local\Genymobile\Genymotion\ova
After you uninstall the genymotion and virtual box. next you can do for install of genymotion and virtual box as check your support your OS(windows) capability version install then work fine.
Now you can create virtual device.
This way for work my windows 10 OS.
Solved!!
I am using OS X 10.9 (Mavericks), Genymotion v1.3.1
While adding the device, instead of adding Nexus, I added Galaxy S4/HTC One/Xperia Z - 4.2.2 with Google Apps.
This one just worked.
I am just trying to start development in Android.
So, the problem is that when I try to launch an emulator by issuing the command emulator #A2, an emulator comes up on the screen. But even after waiting for as long as 2-3 hrs, all it shows is a black screen. Not even the Android home screen or the Android logo. Just a black screen. And while initially "adb devices" shows the emulator as offline.after 2-3 minutes the list of attached devices becomes blank.
I searched all over net and tried all the steps mentioned there like kill and restart adb, install java/android in a directory without spaces, but to no avail.
My Jdk and Android installations are in following folders:
C:\Java32BitInstallation
C:\AndroidSdkInstallation
Here's the list of stuff I have downloaded/installed for it:
Android SDK Tools, revision 13
Android SDK platforms tools, revision 10
SDK platform Android 4.0.3, API 15, revsion 1
Jdk jdk-7u3-windows-i586
In my path variable, I have added *C:\AndroidSdkInstallation\android-sdk\platform-tools;C:\AndroidSdkInstallation\android-sdk\tools;C:\Java32BitInstallation;C:\Java32BitInstallation\bin*
Also after reading somewhere from net I have added JAVA_HOME variable with its value as C:\Java32BitInstallation\ But still no use.
I have both IntelliJ and Eclipse installed on my system. But since for starting the emulator, I am not using any of these, I don't suspect any foul play with these.
I have been trying for past 10-12 days and have not been able to start the emulator, let alone write my first "Hello world" program.
Additional notes:
My system is a Windows 7 (64 bit) machine. Earlier I had installed 64 bit version of jdk, but the problem was present that time too. Now after searching on internet, I uninstalled that and installed 32 bit version of Java. But, again no use. One thing, though, this 32 bit version of Java (jdk 7 update 3), first install jre as part of jdk installation and then installs jre 7. So now I have 2 folders: jre and jre7 in the C:\Java32BitInstallation directory. Could this have to do anything with my emulator not turning up. Do I need to specify additional environment variables or modify the existing one?
BTW, did I mention the logcat shows nothing.
Update 25.07.2018:
The latest Android Studio version does not have this option anymore.
If the problem persists try to switch between the values of the "Emulated Performance" dropdown in the Verify Configuration dialogue (if available) or refer to the Configure Emulator graphics rendering and hardware acceleration.
Update 26.02.2014:
There are two hints in the Configuring Graphics Acceleration chapter from developer.android.com.
Caution: As of SDK Tools Revision 17, the graphics acceleration feature for the emulator is experimental; be alert for incompatibilities and errors when using this feature.
and
Start the AVD Manager and create a new AVD with the Target value of Android 4.0.3 (API Level 15), revision 3 or higher.
So Android 4.0.3 (API Level 15) seems to be the minimum requirement for graphics acceleration.
Original answer
I have had the same issue with the latest Android SDK.
I simply deactivated the checkbox "Use Host GPU" within the settings of the virtual device and it started working again.
The "Use Host GPU" does only work for me with Android 4.2 as "Target".
I have recently the same issue in emulator, Nexus 5 (Android O). I have go to Android Virtual Device Manager and Wipe User Data and it solved my Problem.
I had issues with getting the larger devices to emulate (Nexus7 and 10), while the phone sized emulators worked great. Would just keep getting a black screen with nothing for hours with the tablets. What helped was actually the OPPOSITE of what most people here are recommending: after setting the tick box for 'Use Host GPU' and setting the target to the highest android (4.4.2 at the time of this writing) the 7 and 10 work as expected!
Have you tried the power button :) ... it really worked for me. Actually emulator saves the device state before closing so at the last run if you switched off the device & closed the emulator then in the next run it will load previous state & display switched off phone aka blank screen. Although there might be many other causes of this issue.
Checking "Wipe user data" in the Launch Options fixed it for me.
Go to Android Virtual Device Manager->Select your device->Start->Check "Wipe user data"->Launch
Mac Users: Unfortunately, if you have an older Mac (late 2009 for example) and are using Yosemite, you cannot use HAXM for 64 bit architecture. According to the release notes on HAXM:
HAXM driver does not support emulating a 64 bit system image on Intel systems based on Core microarchitecture (Core, Core2 Duo etc.). All systems based on Nehalem and beyond are supported. (Corei3, Core i5 and Core i7 machines).
I spent a day trying to figure this problem out when I came upon this quote. The only thing that works is to use the non-x86 version of the latest OS (e.g. Lollipop Android 5.0.1 armeabi-v7a) in your AVD
How i solved the issue.. Open AVD manager, CLick on the drop-down arrow:
select >> wipe data after that u can select >> cold boot now..
It worked for me
Here is how i got it solved :
I ran the emulator with following command :
sudo /home/code/Android/Sdk/tools/emulator -avd Nexus_S_API_21 -netspeed full -netdelay none -debug-init -logcat '*:v'
and received the following in the output :
NAND: could not write file /tmp/android-code/TMP7.tmp, No space left on device. (similar error, could not reproduce it)
So, i just freed up some disk space from my /home directory in ubuntu (for windows free the C: drive space) and it then booted smoothly.
Do factory reset in "Android Device Manager".
In newer versions of Android Studio, this is called "Wipe Data", and it is in the right-click menu for the device in the virtual device manager.
Also had this issue out of the blue. Android studio was taking up 100% of CPU and in expo I had the following error:
Couldn't start project on Android: Error running adb: This computer is not authorized to debug the device. Please follow the instructions here to enable USB debugging: https://developer.android.com/studio/run/device.html#developer-device-options. If you are using Genymotion go to Settings -> ADB, select "Use custom Android SDK tools", and point it at your Android SDK directory.
Cold boot fixed it for me, like boltup_im_coding's answer. You can also cold boot this way if it's already running (with the black screen).
Make sure that you've installed the latest HAXM revision. I had the same blank screen problem with version 1.0.1 while 1.0.8 was already available. The installer can be downloaded via the SDK tools, to actually install the module you would have to execute
android-sdk-directory\extras\intel\Hardware_Accelerated_Execution_Manager\intelhaxm.exe
I changed it to always "cold boot" to fix my problem. Prior to this, when I ran adb devices it always showed as offline.
Had this issue on my Nexus 7,Nexus 10 & Pixel as well that means in all the emulators.
After days of struggling with this issue,
I figured it out finally.
Well, there are a lot of answers above which may work or may not for you because their configuration may vary slightly than yours.
I'll tell you my solution:
When creating those emulators, I checked Hardware - GLES 2.0 in Graphics for better performance.
And for me it was the issue.
If you've done the same then,
Go to AVD Manager -> Select your emulator -> Click on Edit configuration (in Actions column marked as pencil) -> in Emulated performance - Graphics -> Select Software - GLES 2.0.
Then click on Show Advanced Settings -> Set none for both Front and Back camera and hit Finish.
Now select your emulator in AVD Manager and click on Dropdown arrow in Actions column -> select Cold Boot Now.
And yay you're ready to go 😀
Helped for me (windows 10, intel):
Disable Hyper-V in windows
Uninstall HAXM ( "Intel Hardware Accelrated ..." in control panel)
reboot
Install HAXM using android studio (Settings -> Android SDK -> SDK Tools -> Intel x86 Emulator Accelerator (HAXM Installer) -> install)
Run emulator (Also you may try Wipe VD data/Cold boot VD)
By the sound of it you have a misconfigured device. If you do it will never start and never show anything in Logcat.
I'd recommend creating a new device using one of the default "Device Definitions" available in the AVD Manager. It's as easy as highlighting the device type you want in the "Device Definitions" tab and clicking the "Create AVD..." button, then filling out a few details. I'd start by adjusting "Internal Storage" to around 8GB and (maybe) an "SD Card" of 2GB while leaving everything else the same. Try starting the device and if you see "Android" pop up onscreen you're running. The first boot usually takes awhile so just hang on and watch Logcat for any issues (the "DDMS" perspective helps here).
If you still see a black screen with a default device definition you've got problems elsewhere that are causing the device to fail. Digging through logs may be your only chance if that's the case. You can always try re-downloading the ADT and re-installing the SDKs if nothing else works.
The goal here is to get you up and running with a (very) basic device, so don't shoot for uber impressive specs at this point, just shoot for trying to make it run. Once that happens try adjusting the settings one-by-one until you have it spec'd out the way you like. Just keep in mind that the emulator has its limitations and its no substitute for a real device (Although it works most of the time ;)
This is a known bug if you selected "Use host GPU" option while creating AVD.
https://code.google.com/p/android/issues/detail?id=28614
Uncheck the option and it should work!
Just try to set CPU/ABI on "Intel Atom (x86)" and deactivate the checkbox "Use Host GPU".
The Problems associated with the Black window of the emulator:
Happens when a new windows is installed. Problem associated with graphics of the windows is on the CD of windows .You have to Update windows and follow the following steps.
If Emulated Performance Graphics is (Software GLES then select it to-->Automatic)
Or
If Emulated Performance Graphics is (Automatic then select it to-->Software GLES)
this alternation can solve this problem.
I was having this issue on my Mac. When you create the device if you change "Graphics" from "Automatic" to "Software" it fixes the issue, or it least it did for me.
The following fix worked for me:
Locate the AVD folder in ~/.android/avd
Open config.ini
Replace the following settings with these values:
hw.gpu.enabled=yes
hw.gpu.mode=on
Save and close the file
Do not open the AVD settings screen within Android Studio or it will revert the above settings
Start the emulator
Thanks to Sunsugh Park for providing the fix.
I have reported this to Google at Black screen starting API 15. Please star the issue to get them to fix it.
Edit
Actually, while the emulator booted ok, it crashed after opening an app. So the emulator team must have disabled hardware graphics for a reason. Unfortunately, it appears to be impossible to get the emulator to work.
I had the same problem on API 28, and the fix turned out to be as below;
Enabling Skia rendering for Android UI
When using images for API 27 or later, the emulator can render the Android UI with Skia, which can render more smoothly and efficiently.
To enable Skia rendering, use the following commands in adb shell:
su
setprop debug.hwui.renderer skiagl
stop
start
https://developer.android.com/studio/run/emulator-acceleration#accel-graphics
I too got the same problem. When i changed the Eclipse from EE to Eclipse Classic it worked fine. in Win professional 64Bit.
Have a try it may work for you too..
For a workaround try Android 4.0.3 (API 15) with the Intel Atom (x86) image. I could capture DDMS screenshots with both "use host gpu" and HAXM enabled. Only this combination worked for me.
I also had the same problem. I figured out that the HAXM hardware accelerator was recently updated but not reinstalled since the update manager just updates the installer package which get saved to your hard drive. You will need to remove HAXM and then run that installer package to complete the update. Usualy this gets installed into ANDROID-SDK-ROOT\android-sdk\extras\intel\Hardware_Accelerated_Execution_Manager. Where ANDROID-SDK-ROOT is the location where your android sdk is located.
For me, I had to turned off both front and back camera. Hope this helps!
I use Microsoft's lightning fast Android Emulators utilizing Hyper-V, and I had the same black screen for every Android emulator that I created no matter how I set the GPU Mode (auto, host, mesa, angle, swiftshader, off). Though my situation is apparently different form that of the OP, I thought it might be useful for those using Microsoft Android emulators and coming here after searching "android emulator black screen".
The solution in my case is updating all the Android tools:
Visual Studio > Tools > Android > Android SDK Manager > Tools
As of today (2019-02-01), Android emulators would have this black screen problem if you have a fresh install of Visual Studio 2017. VS shows notifications automatically for updates of NuGet packages, extension tools, etc., but NOT for Android tool updates. You have to check and update them manually.
I've managed to launch and debug an Android testing application on the Android emulator through Delphi.
I have Windows 7 64 bit, 4GB RAM, a dual core processor at 3GHz and Delphi XE 5.
Below is a link that I've prepared in a hurry for my colleagues at work but I will make it better by the first chance:
Debug Android Apps with Delphi
Forgive my English language but I am not a native English speaker. I hope you will find this small tutorial
I was having this problem after I got the blue screen of death while running my emulator. Here's my solution (for Windows at least). My solution is too completely re-install the AVD. The problem with the normal un-installation process for Android Studio is that it doesn't remove everything, so if your AVD files are corrupted, they will remain corrupted on re-install.
In order to fix this, I deleted two directories:
C:\Users\(My Username)\.Android
and
C:\Users\(My Username)\.AndroidStudio3.1
Then I re-ran in the installer.
I think this is the most foolproof solution if your emulator was previously working because it forces a complete refresh of the AVD component of Android Studio.
Another source of error could be the length of the PATH system variable (on Windows systems). Running intel based images with a PATH variable longer than 2047 characters, seems to pass an empty value of this variable to the console / emulator, so it cannot start correctly.
Here is an article describing this behaviour:
https://software.intel.com/en-us/articles/limitation-to-the-length-of-the-system-path-variable
I had the same problem. Reducing the total length of this system variable to 1354 chars by removing unused / non-existent paths fixed it for me.
I had the same problem. Here's my solution (for Mac OS). I just downgrade the version of the Android Emulator (from 28.0.3 to 27.3.8). Here is a detailed instruction how to do it.