Description of problem:
brightness changes when switch application (or output changes) on external display

Version-Release number of selected component (if applicable):
xorg-x11-drv-intel-2.12.0-6.fc14.1.x86_64
xorg-x11-server-Xorg-1.9.4-1.fc14.x86_64

How reproducible:
plug external monitor and go to "Steps to Reproduce"

Steps to Reproduce:
1. run xterm (or rxvt) with black background and green output
2. run top (brightness will go up)
3. stop top and run clear (go down again)
  
Expected results:
Permanent brightness

Additional info:
It's really uncomfortable when switch between application (vim -> clear terminal -> browser for example)

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)


Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
LVDS1 connected (normal left inverted right x axis y axis)
   1280x800       60.0 +   50.1  
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0  
   1280x960       60.0  
   1152x864       75.0  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)