sudo apt-get install --yes virt-manager
sudo usermod --append --groups libvirtd "$USER"
virt-manager

# Unable to connect to libvirt.
# 
# Verify that:
#  - The 'libvirt-bin' package is installed
#  - The 'libvirtd' daemon has been started
#  - You are member of the 'libvirtd' group
# 
# Libvirt URI is: qemu:///system
# 
# Traceback (most recent call last):
#   File "/usr/share/virt-manager/virtManager/connection.py", line 1027, in _open_thread
#     self.vmm = self._try_open()
#   File "/usr/share/virt-manager/virtManager/connection.py", line 1009, in _try_open
#     flags)
#   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 105, in openAuth
#     if ret is None:raise libvirtError('virConnectOpenAuth() failed')
# libvirtError: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied

gksudo virt-manager

# Error starting Virtual Machine Manager: No D-BUS daemon running
# 
# 
# Traceback (most recent call last):
#   File "/usr/share/virt-manager/virt-manager.py", line 399, in <module>
#     main()
#   File "/usr/share/virt-manager/virt-manager.py", line 338, in main
#     options.testfirstrun)
#   File "/usr/share/virt-manager/virtManager/config.py", line 99, in __init__
#     self.conf.add_dir(self.conf_dir, gconf.CLIENT_PRELOAD_NONE)
# GError: No D-BUS daemon running