http://www.techsupportalert.com/content/ubuntu-tips-and-tricks.htm#Customize-the-Panel
Configure resolution
https://wiki.ubuntu.com/X/Config/Resolution
http://www.ubuntugeek.com/how-change-display-resolution-settings-using-xrandr.html
http://www.thinkwiki.org/wiki/Xorg_RandR_1.2
disable Gnome Keyring
Gnome Keyring is a small utility to authorize applications before opening them. But sometimes it feels really annoying when it starts to prompt to enter keyring password every time when you open some application. So this small tutorial teaches you eliminate the need of entering keyring password over and over again.
This method will work both for keyring with a password being set at some point of time by you and as well as default password being set without your knowledge. Follow the steps:
Step 1. If your keyring password is different from your login password, do this before you proceed to step 2, else skip this step.
a) Open your terminal and from navigate to:
cd .gnome2/keyrings/
b) Make sure there is a file called “default.keyring” in the directory by typing:
ls -l
c) Now remove the file by typing the below command:
rm default.keyring
Step 2: Open your terminal and follow these steps:
– Install libpam-keyring:
sudo apt-get install libpam-keyring
– Now to modify gdm login:
sudo gedit /etc/pam.d/gdm
– Now it will open an file, add this line at the end:
@include common-pamkeyring
That’s it. Now restart your Ubuntu and open any app that used to prompt you to enter keyring password. If you had done the above steps properly, it will now prompt you to set a new password. If you want to enter a new password, better set the same password as of your login password or just leave it empty if you totally want to get rid of keyring.