26/08 ROM killed OTG on BB -xM

I run my Logitech wireless mouse from the OTG on my BeagleBoard -xM. As of the 26/08/19 ROM it no longer responds. Still works OK in the usual USB sockets.

Edit: Returning to 23/08 ROM, mouse receiver in OTG works fine.

The OTG port with 26/08 ROM seems to be working OK for me. None of the recent changes are in USB-related areas, so I’m not really sure what the problem could be. Does it work if you plug in the mouse after the machine has booted?

Yes, it does. So receiver plugged in at boot, nothing. Plugged in after boot, normal operation.

31st Aug ROM – OTG and mouse functional again.

31st Aug ROM – OTG and mouse functional again.

Curious! The new set of ROMs was only triggered because InetRes was updated by new root certificates, and happens to provide some of the emergency networking tools in ResourceFS. The actual changed file (CertData) doesn’t get used. So, other than a higher version number and a new date in the Task Manager’s info box it’s the same USB as the previous day.

It is strange but absolutely repeatable here. 19th Aug – fine. 26 Aug – no OTG mouse. 31 Aug – fine.

I didn’t intend to install the last ROM ‘cos I tend not to if I don’t know understand what’s changed, but then thought, “Maybe…”

Build problem?

What provides the OTG mouse functionality? USBDriver? DWCDriver? Might be worth extracting and diffing to see if they’re identical from one to the other?

… and with the 22 September ROM the mouse on OTG dies again.

23 September ROM, OTG mouse working again. Is someone doping the cheese?

Edit: Just tried the 22/9 ROM again. This time it works. Confused.