Hi Pavlos,
Thanks for the reply. I've been distracted by another issue (changing username) and it's all but disabled the Mac, so I'm typing this on another computer. Right now the Mac's a strange new world that feels like growing up in Oz and being whisked into Kansas.
Anyway, as to your questions: Thanks for catching the & where a $ should be. I plead temporary blindness. My only uninformed idea about the "Could not parse.." is that it relates to the prior "filtered out" line(s) rather than the "UDMA" line. I have no guess what UDMA is, so maybe that's related?
UPDATE: While trying to fix the disabled MacBook mentioned above, I used the PC running MATE to look up UDMA and found it's for an ATA device (RAM or hard drive?). Apparently related to the command filtered out in the line above. ACPI is the Advanced Configuration and Power Interface that puts the MacBook to sleep. If this issue ever gets resolved, I guess it will be by turning off the filtering that's presumably done by ACPI command ef/10:03:00:00:00:a0 (maybe accessible in the MacBook firmware). Scary enough for a newbie like me not to mess with, unless a MacBook MATE expert happens to reply here. So if I get it running MATE again today, I'll just go back to the double-tap on the Brisk Menu key. Thanks for the help, Pavlos. 
So now I'm going to make a new "Change Username" post pleading for help getting back to OZ with my familiar Panel where the default Terminal app isn't XTerm. There's no place like Home...