Ubuntu: How do I make DOSBox show in full screen mode?


I have enable FullScreenmode in Dosbox under Ubuntu 12.04 . But still i am not getting it in Fullscreen. My turbo c++ windows is less than my screen size.


First, press ctrl + F10 to lock mouse to dosbox and then try alt + Enter.


You need to edit dosbox-0.74.conf as given below

Go to terminal and type gedit /home/severus/.dosbox/dosbox-0.74.conf

and make these changes:

fullscreen=true  fulldouble=true  fullresolution=1366x768  windowresolution=1366x768  

output=opengl #MOST IMPORTANT


Now save the file and open dosbox. It should be fullscreen with full workspace.

NOTE : Original source of this answer : Click Here


  • Goto /home/user/dosbox.conf
  • Find resolution
  • Change fullresolution from original to your choice (eg. fullresolution=640x480)
  • Leave windowresolution intact (i.e, windowresolution=original) as you might want a smaller sized window.

Optional: change fullscreen to true (i.e, fullscreen=true) if you want to start dosbox in fullscreen mode


I think the Alt-Enter command makes DOSBox go full-screen. That might not be your problem, though.


fullresolution=auto  windowresolution=auto  

for me auto setting on these two functions, works better.

Ctrl+F10 is for accessing mouse

Alt+Enter is to switch from full screen to small.

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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