Install Xfce on Arch-Linux 2012/2013
The Tutorial shows you How to Install and SetUp the Lxde Linux Desktop on Arch-Linux 2012/2013 and Current with Systemd Lxdm Display Management.
All Steps are Clearly Delineated Reducing at Minimum the Eventual Choices and Customizations to Make Clearer & Easier the Process.
After if you Have Some Doubt or Need Some More Insight you Should Consult the Official Online Arch-Linux Documentation…
Just Relax & Take the Time of Carefully Reading and Executing the Instructions Contained Here and All should Work Like a Summer Breeze :)

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Here Prerequisite for Lxde is the XOrg Server Installation & SetUp:
XOrg Installation Arch-LinuxArch-Linux XOrg Windows System Server Installation and Setup Steps Tutorial -
Installing the Lxde Desktop
Copysu
If Got “User is Not in Sudoers file” then see: How to Enable sudo
Copypacman -Sy lxde gamin
Troubleshooting for failed to commit transaction – invalid or corrupted package:
Here Arch-Linux Failed TransactionArch-Linux 2012 Troubleshooting Error/Issue failed to commit transaction invalid or corrupted package -
Installing some Lxde Utility Programs and Fonts
This Simply to Give a slightly Nicer Use & Feeling to the Lxde Linux Desktop.
Copypacman -Sy leafpad obconf epdfview ttf-dejavu
Troubleshooting Arch-Linux pacman “Could Not Resolve Host”:
Here Dhcp Internet Network SetUpArch-Linux Troubleshooting eth0 Dhcp Network and Internet Connection -
Enabling Login Into Lxde at Boot
Copysystemctl enable lxdm.service
Copynano /etc/lxdm/lxdm.conf
Uncomment:
Copysession=/usr/bin/startlxde
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Lxde Desktop SetUp
Copysu <username>
Copycp /etc/xdg/openbox/menu.xml /etc/xdg/openbox/rc.xml /etc/xdg/openbox/autostart ~/.config/openbox
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Reboot Directly Into Arch-Linux Lxde Desktop .)