December 22

HowTo fix Ubuntu 8.10 Intrepid Dual screen issues
Posted on December 22nd, 2008 at 2:47 PM by slm4996
Category: Hacks, howto

NOTE – Please click on the title of this post and view it by itslef to see the whole text, I am having issues with my template not wrapping long line right now.

Here is a easy script to correct issues when you do not have the correct resolution available in Ubuntu 8.10 for your external monitor.

This script checks for a usb hub in my docking station and if it is present adds the non-detected, but supported, resloution to the external monitor. I am checking for the hub instead of the monitor because xrandr seems to think it is always connected!?

I just added this to my /etc/gdm/init/Default script

if lsusb | grep "Cypress"; then
echo "Changing LCD resolution"
xrandr --newmode "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync
xrandr --addmode VGA 1440x900_60.00
xrandr --output VGA --mode 1440x900_60.00
else
echo "No Changes"
fi

What this does is add the resolution 1440×900 at 60hz to the external monitor.
This is a supported resolution but is not detected for some reason.

Any questions or comments please feel free to let mw know!