Comment 4 for bug 1539739

This is due to lshw changing out it outputs memory between Trusty and Xenial.

On Trusty I get
$ sudo lshw -class memory
  *-firmware
       description: BIOS
       vendor: SeaBIOS
       physical id: 0
       version: Ubuntu-1.8.2-1ubuntu1
       date: 04/01/2014
       size: 96KiB
  *-memory
       description: System Memory
       physical id: 1000
       size: 2GiB
       capacity: 2GiB
     *-bank
          description: DIMM RAM
          vendor: QEMU
          physical id: 0
          slot: DIMM 0
          size: 2GiB

On Xenial I get
$ sudo lshw -class memory
  *-memory
       description: System memory
       physical id: 0
       size: 2000MiB