Set Gmail as Default Email Client in Firefox

Follow the procedures:

1. go to Preferences
2. select the “Applications” tab
3. search for “mailto”
4. select “Use Gmail” from the list of actions associated with the mailto protocol

If it is still not working. Do the followings:

1. Type “about:config” into the location bar
2. Click on the confirmation if any warning pops out
3. Search for “network.protocol-handler.external.mailto” in the filter
4. Toggle the value by double-clicking on the entry

Source: http://googlesystem.blogspot.com/2009/06/set-gmail-as-default-email-client-in.html

ps2pdf segmentation fault in Ubuntu 11.04

Workaround can be found here: http://lists.debian.org/debian-printing/2011/05/msg00020.html

Below is the solution from the link above:

Step-by-step instructions for downgrade-quickfix for amd64:
--------------------------------------------------------------------------------
> (Use at your own risk!)
> 1) wget 'http://ftp.uninett.no/ubuntu/pool/main/l/lcms/liblcms1_1.16-7ubuntu1_amd64.deb'
> 2) sudo dpkg --install liblcms1_1.16-7ubuntu1_amd64.deb
> 3) Pin the package at that version so that it won't be upgraded again.
--------------------------------------------------------------------------------

Step-by-step instructions for downgrade-quickfix for i386:
--------------------------------------------------------------------------------
> (Use at your own risk!)
> 1) wget 'http://ftp.uninett.no/ubuntu/pool/main/l/lcms/liblcms1_1.16-7ubuntu1_i386.deb'
> 2) sudo dpkg --install liblcms1_1.16-7ubuntu1_i386.deb
> 3) Pin the package at that version so that it won't be upgraded again.
--------------------------------------------------------------------------------

To pin the package, create a file /etc/apt/preferences.d/01pin-liblcms1
with the following content:
--------------------------------------------------------------------------------
Package: liblcms1
Pin: version 1.16-7ubuntu1
Pin-Priority: 1001
--------------------------------------------------------------------------------

Disable wifi or bluetooth by default in Ubuntu

in /etc/rc.local, add the following line(s) before exit 0:

rfkill block wifi
rfkill block bluetooth

Source: http://ubuntuforums.org/showthread.php?t=1599319

Move Window Buttons Back to the Right in Ubuntu 10.04 / 10.10

1. run “gconf-editor”
2. change the key “apps/metacity/general/button_layout” to “menu:minimize,maximize,close”
3. done

Source: http://www.howtogeek.com/howto/13535/move-window-buttons-back-to-the-right-in-ubuntu-10.04/

Using epstopdf with the lossy image compression disabled

set an environmental variable GS_OPTIONS with its value “-dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode”

Source: http://ansuz.sooke.bc.ca/software/ps-pdf-tricks.php

The Noun Project: A Free Online Symbol Library

http://www.thenounproject.com/

Linux: Commandline Change Volume

amixer set Master 2dB+

amixer set Master 2dB-