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Remove VirtualBox from Ubuntu


sudo apt-get remove virtualbox* --purge

Stuck in scale mode?

To get out of the scale mode, where the screen reshapes itself but the resolution is the same, press the right "control" key and the "home" key. This can also be configured in the VirtualBox File > Preferences > Input.

This works on my Ubuntu installation of Oracle VirtualBox.

Switch to 32 bits mode

Source: Tutorial on how to set depth to 32 bits on VirtuaBox Ubuntu virtual machine.

  1. Install Guest Addition. Do not restart after the installation has finished.
  2. Open a terminal (in your Ubuntu guest) and replace the default settings with the following ones in the "Screen" section.
  3. Save the file, close, and restart the VM.
gksu gedit /etc/X11/xorg.conf

Paste the following to the file.

Section "Screen"
       Identifier    "Default Screen"
       Device        "VirtualBox graphics card"
       Monitor       "Generic Monitor"
       DefaultDepth  24
       SubSection "Display"
               Depth         24
               Modes         "1280x800" "1024x768" "800x600" "640x480"