Description of problem:

As described here (http://mjg59.livejournal.com/114159.html), I am now seeing slight brightness flickering in X with rawhide (it does not occur in runlevel 3 until I start X):

xorg-x11-drv-intel-2.8.0-3.fc12.x86_64
kernel-2.6.31-0.125.4.2.rc5.git2.fc12.x86_64

Hardware is Lenovo T500 (running on Intel video) with WUXGA+ screen.

[spot@pterodactyl ~]$ xrandr 
Screen 0: minimum 320 x 200, current 1920 x 1200, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 331mm x 207mm
   1920x1200      60.0*+   50.0  
   1600x1200      85.0     75.0     70.0     65.0     60.0  
   1400x1050      74.8     60.0  
   1280x1024      85.0     75.0     60.0  
   1280x960       85.0     60.0  
   1152x864       75.0  
   1024x768       85.0     75.0     70.1     60.0  
   832x624        74.6  
   800x600        85.1     72.2     75.0     60.3     56.2  
   640x480        85.0     72.8     75.0     59.9  
   720x400        85.0  
   640x400        85.1  
   640x350        85.1  
DP1 disconnected (normal left inverted right x axis y axis)