mplayer to rip dvd's

mplayer -dvd-device /dev/hda dvd://1 -dumpstream -dumpfile out.mpg

- required: libdvdcss2 

glCreateShaderObjectARB( GL_FRAGMENT_SHADER_ARB ) fails

because the card doesn't support frag or vertex 

if (GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader)

      printf("Ready for GLSL\n");

Running multiple Xsessions

http://www.debian-administration.org/article/Running_multiple_X11_sessions