pisti@pisti-OptiPlex-755 ~ $ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
DIN disconnected (normal left inverted right x axis y axis)
DVI-0 connected primary 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768      60.00*
   800x600       60.32    56.25
   848x480       60.00
   640x480       59.94