Change Ubuntu Desktop From Unity Back to Gnome

Annoyed by the Ubuntu Unity Desktop? Logout, and change to Ubuntu Classic
http://ubuntuguide.net/ubuntu-11-04-natty-login-to-classic-gnome-2-desktop

Ubuntu Crashes Hard: Acer 5570Z Laptop/Intel Graphics Media Adapter

When I updated to Ubuntu 10.04, I started getting hard crashes - no response from computer at all. Once even seemed to kill the install (although probably just the "grub" boot loader).

Intel GMA adapter support seems to be known to be problematic.
https://help.ubuntu.com/community/i915Driver


I turned off fancy graphics. Seems to fix it for me.
-Right Click
-Change Desktop Background
-Visual Effects
-Select None.


Note 1. Ctrl-Al-Backspace to restart X is disabled. You should re-enabled it.

Enabling Ctrl-Alt-Backspace for Ubuntu 10.04

* Select “System”->”Preferences”->”Keyboard”

* Select the “Layouts” tab and click on the “Layout Options” button.

* Select “Key sequence to kill the X server” and enable “Control + Alt + Backspace”.

http://www.ubuntugeek.com/enable-ctrl-alt-backspace-in-ubuntukubuntu-10-04lucid-lynx.html

Playing Mp4, WMV, and other formats in Ubuntu

Go to this page and follow these steps to play and record most common multimedia formats, including MP3, DVD, Flash, Quicktime, WMA and WMV, including both standalone files and content embedded in web pages.

https://help.ubuntu.com/community/RestrictedFormats

Ubuntu does not supplies these by default, because they are proprietary formats, rather than Open Source. https://help.ubuntu.com/community/FreeFormats

Lexmark Printing on Ubuntu 9.10

Lexmark offers deb packages of linux drivers

Go to Lexmark/downloads (http://support.lexmark.com/index?page=home&locale=EN&userlocale=EN_US&segment=DOWNLOAD)

Enter your printer model number, linux (S300, Ubuntu)

Extract it, run it from the terminal as sudo
(sudo sh lexmark_inkjet_09_driver_1.0_1.i386.deb.sh)

Ubuntu 9.10 & Cups Printing - Fixed

On my fresh install of Ubuntu 9.10, the printer management was not working.
When I opened system->printers, it was not connected. When I pressed connect, it gave an httpconnectionencryption message.

Some help bug files mentioned printer sharing, and editing the config file.

I found that my config files were blank.

I reinstalled through Software Center, but it turns out, that's only the gui.

I reinstalled Cups through the System -> Synaptic Package Manager, and now it is working.