This says all ! 
(please read what you post...) :

Sep 13 01:46:14 kernel: [ 729.436525] intelfb: Non-CRT device is enabled ( LVDS 
port ). Disabling mode switching.
Sep 13 01:46:14 kernel: [ 729.436552] intelfb: Video mode must be programmed at 
boot time.

1. intelfb can not currently switch video modes on non-CRT devices (id est on 
laptop screens)
2. so, you have to fix the desired video mode into your video-card bios

-- 
Intelfb completely b0rken
https://bugs.launchpad.net/bugs/147606
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