Ubuntu, Intel 945GM/GMS and external display
I’ve been running Ubuntu on my laptop for a while. When I work at home I connect it to an external flatscreen (ViewSonic VP181b).
Since the upgrade to Ubuntu 8 I’ve lost the 1280×960 resolution every time the folks at Ubuntu released a kernel update. The wrong graphics module, a crappy X-org config file or bad karma … you name it.
This is my hardware
After the recent upgrade to kernel 2.6.24-21 I had to do these tricks:
Install the i386 kernel.
cd /usr/src
sudo rm -rf linux
sudo ln -s linux-headers-2.6.24-21-386 linux
sudo reboot
Adjust your xorg.conf file (/etc/X11/xorg.conf)
Identifier “Intel Corporation Mobile Integrated Graphics Controller”
Driver “intel”
# Driver “i810″
BusID “PCI:0:2:0″
EndSection
Section “Monitor”
Identifier “Generic Monitor”
Option “DPMS”
HorizSync 28-64
VertRefresh 43-60
Option “MonitorLayout” “CRT,LFP”
Option “Clone” “true”
EndSection
After disabling the “cloning” of screens in the “Screen Resolution” settings of Ubuntu you should be all set.