Dell Laptop linux tweaks
The following are handy tweaks when installing Ubuntu.
Split Screen Problem
Inspiron 4000, C600
in the xorg.conf
add the following to the screen section
Viewport 0 0
Note: I(iamtunrip) have never used the viewport 0 0 line
Brightness hotkeys issue
After using the keyboard function keys to adjust brightness, gnome behaves oddly and menus cannot be accessed.
This issues is well documented here - https://bugs.launchpad.net/ubuntu/intrepid/+source/linux/+bug/285323 .
You can use the Crtl-Alt F1 and then Crtl-Alt F7 key to fix it quickly.
A long term workaround is as follows -
create a file under /etc/X11/Xsession.d/ called 40custom_load-xmodmap containing
xmodmap -e 'keycode 232 = XF86_Switch_VT_7'
xmodmap -e 'keycode 233 = XF86_Switch_VT_7'
chmod 644 40custom_load-xmodmap