Description of problem:

WIth and IBM USB2 DVD-R burner, we were seeing the following errors:

Nov  7 11:40:36 makani kernel: cdrom: This disc doesn't have any tracks I recognize!
Nov  7 11:41:59 makani kernel: sr 0:0:0:0: SCSI error: return code = 0x8000002
Nov  7 11:41:59 makani kernel: sr0: Current: sense key: Data Protect
Nov  7 11:41:59 makani kernel:     ASC=0x27 <<vendor>> ASCQ=0xff

It turns out that this indicates that the drive does not have enough power and
needs to have an AC adapter or special power connector.  I'm not sure who would
parse this error and give more descriptive output, so I'm starting with the user
end tool.  In this case growisofs simply reported the ASC error numbers directly.