radeon xrandr output:
-------------------------------------
Screen 0: minimum 320 x 200, current 4246 x 900, maximum 16384 x 16384
LVDS connected primary 1366x768+1440+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768      60.02*+
   1280x720      59.97  
   1152x768      59.95  
   1024x768      59.95  
   800x600       59.96  
   848x480       59.94  
   720x480       59.94  
   640x480       59.94  
VGA-0 connected 1440x900+2806+0 (normal left inverted right x axis y axis) 408mm x 255mm
   1440x900      59.89*+  74.98  
   1280x1024     75.02    60.02  
   1280x960      60.00  
   1280x800      74.93    59.81  
   1152x864      75.00  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   640x480       75.00    72.81    66.67    59.94  
   720x400       70.08  
HDMI-0 connected 1440x900+0+0 (normal left inverted right x axis y axis) 256mm x 192mm
   1024x768      60.00 +
   1920x1080     60.00    59.94  
   1280x1024     85.02    60.02  
   1440x900      74.98    59.90* 
   1280x960      60.00  
   1360x768      60.02  
   1280x800      59.91  
   1280x720     119.99    60.00    59.94  
   720x480       60.00    59.94  

########################################################################################

fglrx xrandr output:
-------------------------------------
Screen 0: minimum 320 x 200, current 4246 x 900, maximum 16384 x 16384
LVDS connected 1366x768+1440+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768       60.0*+
   1360x768       60.0  
   1280x768       60.0  
   1280x720       60.0  
   1024x768       60.0  
   1024x600       60.0  
   800x600        60.0  
   800x480        60.0  
   640x480        60.0  
DFP1 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 256mm x 192mm
   1024x768       60.0 +
   1920x1080      60.0     59.9  
   1776x1000      59.9  
   1680x1050      60.0     59.9  
   1400x1050      60.0     59.9  
   1600x900       59.9  
   1280x1024      85.0     60.0  
   1440x900       75.0     59.9* 
   1280x960       60.0  
   1360x768       60.0  
   1280x800       59.8  
   1280x768       59.8  
   1280x720      119.9     60.0     59.9  
   1152x648       59.9  
   1024x600       60.0  
   800x600        60.0  
   800x480        60.0  
   720x480        60.0     59.9  
   640x480        59.9  
CRT1 connected 1440x900+2806+0 (normal left inverted right x axis y axis) 408mm x 255mm
   1440x900       59.9*+   75.0  
   1280x1024      75.0     60.0  
   1280x960       60.0  
   1280x800       74.9     59.8  
   1152x864       75.0     59.9  
   1280x768       74.9     59.8  
   1280x720       74.9     59.8  
   1024x768       75.0     70.1     60.0  
   1024x600       75.0     70.1     60.0  
   800x600        72.2     75.0     60.3     56.2  
   800x480        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     67.0     59.9