Comment 1 for bug 1970795

Thank you for reporting this issue. for comparison:

definition for jammy:

https://git.launchpad.net/livecd-rootfs/tree/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl

with the cdrom passthrough item:

      <Item ovf:required="false">
        <rasd:AddressOnParent>0</rasd:AddressOnParent>
        <rasd:AutomaticAllocation>false</rasd:AutomaticAllocation>
        <rasd:ElementName>CD-ROM 1</rasd:ElementName>
        <rasd:InstanceID>9</rasd:InstanceID>
        <rasd:Parent>3</rasd:Parent>
        <rasd:ResourceSubType>vmware.cdrom.remotepassthrough</rasd:ResourceSubType>
        <rasd:ResourceType>15</rasd:ResourceType>
        <vmw:Config ovf:required="false" vmw:key="backing.exclusive" vmw:value="false"/>
      </Item>

definition for focal:

https://git.launchpad.net/livecd-rootfs/tree/live-build/ubuntu-cpc/hooks.d/base/ovf/ubuntu-ova-v1-vmdk.tmpl?h=ubuntu/focal

and cdrom passthrough:

      <Item ovf:required="false">
        <rasd:AddressOnParent>0</rasd:AddressOnParent>
        <rasd:AutomaticAllocation>false</rasd:AutomaticAllocation>
        <rasd:ElementName>CD-ROM 1</rasd:ElementName>
        <rasd:InstanceID>8</rasd:InstanceID>
        <rasd:Parent>4</rasd:Parent>
        <rasd:ResourceSubType>vmware.cdrom.remotepassthrough</rasd:ResourceSubType>
        <rasd:ResourceType>15</rasd:ResourceType>
        <vmw:Config ovf:required="false" vmw:key="backing.exclusive" vmw:value="false"/>
      </Item>

I think the issue may be the rasd:Parent. It's set to 3 on Jammy, which lines up with the SCSI controller, not the IDE controller. We'll check that assumption and start working on it.