I tried your workaround but it didn't work.
when i set the Modes 1440x900 (one of the resolutions from my acer AL2216W) i
got a heavy distorted image (lots of stripes from the actual image flickering
on the screen and the upper left part of the image on the laptop lcd)
from the acer i got the info it was running on 70 Hz (i think thats the reason)
when i added the Horiz Sync Settings ubuntu was running in "low graphics mode"
because of an error parsing the xorg.conf so i had to disable it in the
xorg.conf altogether
This is my Xorg.conf
################
Section "Screen"
Identifier "Configured Screen Device"
Device "Configured Video Device"
# SubSection "Display"
# Modes "1440x900"
# HorizSync 30-60
#
# EndSubSection
EndSection
Section "Extensions"
Option "Composite" "Enable"
EndSection
##############
Section "Device"
Identifier "Intel 945"
Boardname "Intel 945"
Busid "PCI:0:2:0"
Driver "intel"
Vendorname "Intel"
Option "DRI" "True"
#Framebuffer off because X11 sometimes locks up at random if not
Option "FramebufferCompression" "False"
Option "XvMCSurfaces" "6"
--
gnome-display-properties quits with segmentation fault
https://bugs.launchpad.net/bugs/324485
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