Arch Linux VirtualBox Guest

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Installing Arch under VirtualBox is straightforward, and additions should be installed through pacman (not through "Install Guest Additions" in VirtualBox, or a mounted ISO.)

Follow these instructions after doing a basic install following the Beginners' Guide.

Install the required package:

# pacman -Syu virtualbox-guest-additions

Make sure the modules are loaded:

# modprobe vboxguest
# modprobe vboxsf
# modprobe vboxvideo

Add the three modules above to the MODULES array in /etc/rc.conf to have them autoloaded on reboot, too.

# nano /etc/rc.conf

or

# vi /etc/rc.conf

If you are running something that launches /etc/xdg/autostart/vboxclient.desktop, such as GNOME, then you should be ready to go. If you use .xinitrc to launch things instead, you must:

# nano ~/.xinitrc

and add

VBoxClient-all

before launching your WM.

You should now be all set, and all guest additions should work properly. This was confirmed to work with vbox 4.0.8.

Troubleshooting

Guest additions still don't work

You may need to launch VBoxClient-all yourself. Add it to ~/.xinitrc.

Arch freezes periodically

Some people have experienced periodic, unexplained freezes. One possible reason is a VirtualBox bug related to Linux's tickless timer. Details are here http://www.ctrlaltgeek.com/category/virtualbox/

The short version is to modify /boot/grub/menu.lst and add

nohz=off

to the end of your kernel line.