The reason for the failure is that for 12.04 the DataSource is not enabled by default. If you edit /etc/cloud/cloud.d/90-dpkg.cfg and set it to "CloudSigma" it should work.
The reason for the failure is that for 12.04 the DataSource is not enabled by default. If you edit /etc/cloud/ cloud.d/ 90-dpkg. cfg and set it to "CloudSigma" it should work.