Why does one of my GenyMotion emulated devices show a black screen? - android

I have two devices in my GenyMotion application. One is nexus 7 4.2.2 API. The other is a saumsung galaxy s4 4.3 API. The nexus emulator starts up fine and works well. However when I tried starting the s4 emulator, the android loading screen doesn't even show up, all i get is a black screen. When I go to DDMS, the devices tab tells me that the samsung galaxy s4 is online and debuggable. Does anyone know how to fix this issue? It make more sense if both show a black screen but why does one show a black screen and the other doesn't. I don't see anything out of the ordinary in the console.

I just tested this, and notice the blank screen is due to Genymotion version mismatch. Once i downloaded the latest genymotion (v2.3.0) , i was able to see Galaxy S4 startup properly.
If you do not see the navigation bar, you can manually enable it in Configure virtual device, see below.

this worked for me : In Configure Virtual Device (as shown in ashoke's answer) I changed Screen size to one of predefineds resolutions.

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Android blurry screen sometimes

This device:
https://www.amazon.de/Sony-Tablet-PC-Touchscreen-GHz-Quad-Core-Prozessor-interner/dp/B00IN1N66I
Sony Xperia Tablet Z2 SGP511 (10,1") Tablet-PC (Touchscreen, 2,3
GHz-Quad-Core-Prozessor, 3GB RAM, 16GB)
Android version 5.1.1 (Lollipop)
I'm developing an app with cordova (hybrid) and the screen gets blurry sometimes for no appearant reason.
This usually goes away when I tap the screen in a random place inside the div or element that is blurry.
Blurry:
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Clear:
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I'm trying to run the emulator in Android Studio. When I run the avd for Nexus 5 API 8, the phone image appears, but the screen is blank. Some research uncovered that the nexus screen may be too dense to display on my 1368x768 laptop screen, so I tried creating smaller density avds such as 4" wvga nexus s and 3.4" wvga. When I run these, I get the error "failed to create drawable" and no phone image pops up. When I connect my LG phone via usb in developer mode, the app works fine on the phone. Why can't I get the emulator to display the app output?
I had a similar problem and the solution was to disable hardware rendering.
Steps:
Open Tools\Android\AVD Manager
Edit the Virtual Device (Click on the pencil)
Change Emulated Performance - Graphics to 'Software-GLES 2.0'
See also this answer for other options.

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When I open the android emulator, it stays on a black screen.
The app I'm testing is small and basic.
I have the arm* type downloaded, and I set it to 300 RAM, but still nothing.
Emulator have many issue if you want good & fast emulator then uses genymotion Download from link https://www.genymotion.com/#!/. you will get different type of device and fast devices then emulator.

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I too face this type of problem earlier. But I have rectified this by using VirtualBox.
Install virtual box
check this for how to use virtual box as android emulator
I installed different add-on like Samsung Galaxy, Motorola Xoom, Xoom2, Xoom2Me etc and create AVD using them, it solved my problem.

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