Issues getting screenshots in emulator. parts of screen missing Hello I am wondering if anyone has ever experienced this problem.

I am trying to take screenshots of my app (or any app that I have tried) in the emulator.  When I take a screenshot quite frequently part of the screen is corrupt / missing,  like shown below, it can happen anywhere on the screen not just on the keyboard. If when using monitor to take the screenshot I can refresh and it make work and take a proper picture or another area of the screen may then get the problem blank area.


Example screenshot (click image for larger variant)

I am using android-sdk_r22.6.2-linux on Ubuntu Trusty 14.04.  

My emulated device is Nexus 4, 4.4.2,  ARM cpu and any skin, no emulation options.

I have tried taking screenshots via monitor and adb but result in the same issue as seen in screenshot above.

Does anyone know how to fix this or am I going to have to take an ubuntu screenshot and crop to the android screen?
This may help:
  
  1.Firstly start the emulator
  
  2.Then go to the DDMS please select the emulator 
  
  3.Then left side we have button Screen Capture click this button 
  
  4.Screen Shot taken own App.