Eeepc901 KMS: LDVS detection problems

[Daniel Ciocea]

Hello,
recently I tried to make kernel modesetting work on my Asus Eeepc 901 
laptop (it has an Intel 945GSE display chipset).
Whenever KMS is activated in kernel (2.6.29-rc6) the LCD gets black (no 
output), but VGA output is working OK. If I deactivate KMS the built-in 
LCD (AUOptronics model) works OK.
My software system configuration is: Xorg server 1.6,  xorg-video-intel 
is latest from git (since 2.6.2 does suffer from memory leaking error 
previously discussed here).
Xrandr output with KMS:
....
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 2048 x 2048
VGA1 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 
474mm x 296mm
   1680x1050      59.9*+   60.0
   1280x1024      75.0
   1152x864       75.0
   1024x768       75.1     60.0
   832x624        74.6
   800x600        75.0     60.3     56.2
   640x480        75.0     60.0
   720x400        70.1
LVDS1 connected 1024x600+0+0 (normal left inverted right x axis y axis) 
195mm x 113mm
   1024x600       60.0*+

Xrandr output witthout KMS ( external monitor disconected):
Screen 0: minimum 320 x 200, current 1024 x 600, maximum 1024 x 1024
VGA disconnected (normal left inverted right x axis y axis)
LVDS connected 1024x600+0+0 (normal left inverted right x axis y axis) 
195mm x 113mm
   1024x600       60.0*+
   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

I tried to make some changes to LVDS quirks inside of the 
xorg-video-intel driver, but had no success. I also saw that there were 
some kernel changes related to intel DRM lately, maybe the problems are 
in the kernel ...

Do you know what else can I try?
Daniel