ubuntu 14.04 setup

#允许root登录
vi /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
greeter-show-manual-login=true

#删除没必要的软件
apt-get remove unity-webapps-common
apt-get remove totem rhythmbox empathy brasero simple-scan gnome-mahjongg aisleriot gnome-mines cheese transmission-common gnome-orca webbrowser-app gnome-sudoku  landscape-client-ui-install
apt-get remove onboard deja-dup
apt-get autoremove gnome-media
apt-get remove libreoffice-common

#安装右键终端
apt-get install nautilus-open-terminal

#gnome2
apt-get install gnome-session-fallback

#gedit中文乱码
dconf-editor
/org/gnome/gedit/perferences/encodings，添加'GB18030'

#14.04 workspaces
Do you mean gnome-session-flashback instead of gnome classic ? If yes, you can do that by installing the compizconfig settings manager and plugins packages, i.e.
sudo apt-get install compizconfig-settings-manager compiz-plugins
You need to start the compizconfig settings manager found under
Appications -> System Tools -> Preferences
Once loaded, click on General Options and the Desktop Size tab to set the workspaces.

#ubuntu下安装pthread的manpages
$sudo apt-get install glibc-doc
$sudo apt-get install manpages-posix manpages-posix-dev

#root audio
vim /etc/init.d/pulseaudio
PULSEAUDIO_SYSTEM_START=1
DISALLOW_MODULE_LOADING=1
vim ~/.profile
pulseaudio --start --log-target=syslog