http://bugzilla.kernel.org/show_bug.cgi?id=13214





--- Comment #11 from Bruno <bonbon...@internet.lu>  2009-05-17 10:21:56 ---
With unchanged refclk (e.g. not adding "|| IS_I855(dev)" signal timing is
correct for VGA output.

xrandr output from Xorg is suboptimal if not even wrong:
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 2048 x 2048
VGA1 connected 1400x1050+0+0 (normal left inverted right x axis y axis) 340mm x
270mm
   1400x1050      60.0*+
   1280x1024      75.0 +   75.0     60.0  
   1280x960       60.0  
   1152x864       75.0  
   1024x768       75.1     75.0     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     72.8     75.0     66.7     60.0     59.9  
   720x400        70.1  
LVDS1 connected 1400x1050+0+0 (normal left inverted right x axis y axis) 305mm
x 228mm
   1400x1050      60.0*+
   1280x1024      60.0  
   1280x960       60.0  
   1024x768       60.0  
   800x600        60.3  
   640x480        59.9  
DVI1 disconnected (normal left inverted right x axis y axis)

external display reports 1280x1024 though Xorg seems to say it's producing
1400x1050 and cursor can go beyond bottom of visible area but not so for the
width (on external display)
So I guess external display is rather getting real 1400x1050 but scaling the
width to fit its 1280 and cropping the addidional lines. (the injected
1400x1050 is just wrong for the external display - but this probably should go
to a separate bug report - this is an Xorg/fx86-video-intel issue as the extra
mode is not listed by kernel)

ps: tests for this and previous comment were done with 2.6.30-rc6

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