Hey I am not trying to install cube game or something like that . I was trying to run an example of OpenGL-ES 2.0 in laptop (linux-ubuntu) . I was facing difficulty because its an application for embedded systems and I am running on laptop. Actually OpenGL-ES 2.0 needs an emulator for its working in laptop/Desktop . I done that part and installed it but everytime I get error: ./cube: error while loading shared libraries: libGLESv2.so: cannot open shared object file: No such file or directory but I have configured the error and now the example is working: Actually to run these we need You need to install the libgles2-mesa package to get libGLESv2. Presumably the application also uses EGL, in which case you'll also need libegl1-mesa and libegl1-mesa-drivers. If you're going to compile ES2/EGL apps, you'll also need libgles2-mesa-dev and libegl1-mesa-dev. If you want to be able to debug inside Mesa or the drivers, you'll need libgles2-mesa-dbg, libegl1-mesa-dbg, and libegl-mesa-drivers-dbg. these are the additional drivers we need to run the OpenGL-ES 2.0 demos in Laptop or Desktop. if still it does not work : write in terminal : fglrxinfo if it says command not found , install it by typing: sudo apt-get install fglrx then try again. Also go to system->administration->Additional drivers->and install ati drivers there. then run glxgears . it pops up a window with 3 gears rotating which means that your ati is working fine. you can also try : glxinfo | grep version it will show your ati , OpenGl version . Thank you Sudhanshu