Solution: For SR-IOV in an EC2 environment with a 12.04 image, the most recent hardware enablement kernel should be used. As of today, that kernel is linux-image-generic-lts-saucy, see https://wiki.ubuntu.com/Kernel/LTSEnablementStack for updates.
Once the kernel is installed (sudo apt-get install linux-image-generic-lts-saucy) the EC2 instance must be stopped, modified to enable SR-IOV ('ec2-modify-instance-attributes <instance> --sriov simple') and restarted.
Solution: For SR-IOV in an EC2 environment with a 12.04 image, the most recent hardware enablement kernel should be used. As of today, that kernel is linux-image- generic- lts-saucy, see https:/ /wiki.ubuntu. com/Kernel/ LTSEnablementSt ack for updates.
Once the kernel is installed (sudo apt-get install linux-image- generic- lts-saucy) the EC2 instance must be stopped, modified to enable SR-IOV ('ec2-modify- instance- attributes <instance> --sriov simple') and restarted.
Closed as "Won't fix" given this solution.