How to Fix Screen Brightness Resets To Lowest Level On Ubuntu

type in the terminal:

sudo sed "s/\(GRUB_CMDLINE_LINUX=\)\"\"/\1\"acpi_osi=Linux acpi_backlight=vendor\"/" /etc/default/grub -i
then type:

sudo update-grub

then type:

sudo reboot

http://ubuntuforums.org/showthread.php?t=1972303

http://keyable.blogspot.com/2012/04/fix-screen-brightness-resets-to-lowest.html

How to create a tar.gz archive

tar -pczf name_of_your_archive.tar.gz /path/to/directory

Fix Broken package on Ubuntu

http://itechlog.com/linux/2008/12/18/fix-broken-package-ubuntu/

http://www.thepowerbase.com/2012/04/how-to-fix-broken-packages-in-ubuntu-or-debian/

http://blog.bodhizazen.net/linux/apt-get-how-to-fix-very-broken-packages/

Ubuntu Sources List Generator

http://repogen.simplylinux.ch

The way to use the sources.list generator is to select your country (Americans, please note – United States is in the U section (of course)). Then you select your version, for instance Natty. Then you check the Ubuntu repositories you require, and lastly, you select third party repositories.
There are a good many repositories already available for Natty. Among them are the Medibuntu, Ubuntu Tweak and Google repositories. Of course, more will be added.
Please note that for third party repositories, the result text lists how to store the gpg key for each repository.

Ubuntu USB 3G modem issue solved

Open up a terminal from Applications -> Accessories. Type:

    sudo gedit /etc/modules

At the bottom of the file, make two new lines, like this:

    usbserial
    option

Then close the editor program and save it. Reboot the computer.



Source: http://blog.christophersmart.com/2010/05/25/ubuntu-lucid-usb-3g-modem-issue-solved/