Hi, again, So much for bisecting. Turns out, while trying to bisect on a faster machine, I discovered my MT7601U adapters are also broken on 5.12, with my patch. They're working on a Pentium D 950 and broken on an i7-4770R. The only obvious differences I see are the CPU speeds and USB controllers (USB 2.0 vs 3.0). Since there's only a certain amount of weirdness I can handle on one day, I'm stepping back on this one, for now. Thanks, Rui