Comment 1 for bug 1621815

When checking the info using dmidecode, we see the following for the "Chassis" part:

Handle 0x0003, DMI type 3, 25 bytes
Chassis Information
 Manufacturer: Dell Inc.
 Type: Space-saving
 Lock: Not Present
 Version: Not Specified
 Serial Number: 1234567
 Asset Tag: Not Specified
 Boot-up State: Safe
 Power Supply State: Safe
 Thermal State: Safe
 Security Status: None
 OEM Information: 0x00000000
 Height: Unspecified
 Number Of Power Cords: 1
 Contained Elements: 1
  <OUT OF SPEC> (0)
 SKU Number: Sub Notebook

The easiest solution is to add this "Space-saving" type to the whitelist for the multi-head job.