Magic SysRq key

From Wikipedia (http://wikipedia.org/wiki/Magic_SysRq_key):

"The magic SysRq key is a key combination understood by the Linux kernel, which allows the user to perform various low level commands regardless of the system's state. It is often used to recover from freezes, or to reboot a computer without corrupting the filesystem."

This is for safely reboot a frozen system: hold "alt + sysrq" and then sequentially: R -> E -> I -> S -> U -> B

This can be used to kill x: alt + sysrq + K

I hope we never have to use this ;-) .

Look how beautiful is the Ubuntu Netbook Remix.

You can install it with:

sudo aptitude install go-home-applet human-netbook-theme maximus netbook-launcher window-picker-applet 

and then start netbook-launcher. You can also start maximus and put go-home-applet on the panel.

Ubuntu is running in low-graphics mode

I don't know why but two computers of mine showed a warning before start:

"Ubuntu is running in low-graphics mode.

The following error was encountered. You may need to update your configuration to solve this.

(EE) [date] NVIDIA(0): Failed to initialize the Nvidia kernel module. Please see the system's kernel log for additional error messages and consult the Nvidia readme for details.

(EE)NVIDIA(0): ***Aborting***

(EE)Screen(s) found, but none have a usable configuration."

To solve this, type this on a terminal and restart the computer:

sudo dpkg-reconfigure xserver-xorg

Gnome Global Menu

May be this was inspired by Mac-OS.
According to the project (http://code.google.com/p/gnome2-globalmenu/):
"There are several advantages by adopting a shared global menu bar in Gnome (thanks Matthew for organizing these):

    - It works better with narrow windows, because the width of the menus isn't limited to the width of the window. (This is a problem for Gimp and Inkscape especially.)
     - It's less confusing -- when two menu bars are visible on-screen at once, sometimes people choose the wrong one.
     - Global Menu is the first step to move toward a Document Centric Desktop Environment which is, according to us, a long-term trend."

To install: https://wiki.ubuntu.com/DesktopExperienceTeam/ApplicationMenu

This is my Gedit screenshot:

How to Find a File Looking Inside It - 2

Once I suggested Google-Desktop to search for documents contents. Now I will present two alternatives:

Beagle - http://beagle-project.org/Main_Page
sudo aptitude install beagle

Tracker - http://projects.gnome.org/tracker/
sudo aptitude install tracker-search-tool

Both are easier to install than Google-Desktop and has a nice look.

This is a Tracker screenshot: