I gather this is related to the low tolerance of faulty EDID I reported
in https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1047156 Here's
what I reported therein.


Solution:
I've had to force the resolution with the following.
xrandr --newmode "1440x900_60.00" 106.47 1440 1520 1672 1904 900 901 904 932 
+HSync +VSync
xrandr --addmode DVI-0 1440x900_60.00
xrandr --output DVI-0 --mode 1440x900_60.00

In place of the first line, the following also has worked for me --something I 
just got off the net, if I recall.
xrandr --newmode "1440x900_60.00" 106.50  1440 1528 1672 1904  900 903 909 934 
-hsync +vsync

Now, I've had to automate it by placing that into ~/.xprofile


Results:
- X starts with the native mode 1440x 900 at 60 Hz, or just shy of 60, 59 if I 
recall. It blanks out black once or twice though. 
- lightdm sometimes entirely fits onto the physical screen, sometimes it 
doesn't.
- It takes "forever" to reach lightdm. 


Expected results:
I guess it goes without saying that the expected results should be that the 
system should auto-configure itself so as to not require user intervention.

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https://bugs.launchpad.net/bugs/1047146

Title:
  xorg fails to configure native 1440 x 900 on LCD widescreen

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