Got a better fix. This works nicely. I reverted all changes to stock from contrib and simply changed MaxChLen from 16 to 64 (in hid.h). Do you think something else might break because of that ? I now have a nicely working logitech mouse/kb combo and now one free usb slot

The change simply involves using a local maxpkt size of MaxChLen if f->ep->maxpkt exceeds MaxChLen. This is obviously broken and only prevents kb from exiting for now. I'm looking at how to fix this, potentially reading into a local buf and extracting values from there instead - like the 9front code...

Thanks. That works now. I hadn't recompiled usbd so I wasn't seeing my changes. kb doesn't exit now - and I can use my keyboard. Now to fiddle with the mouse driver code. I'm trying to get the logitech mouse/keyboard pair (links using an RF dongle) to work and had to keep pulling my wife's keyboard ...

Great! Thanks. Just another question. I was trying to fix an issue with the mouse I have and I see an error that causes kb to exit with "weird mouse maxpkt". I see a potential fix in the 9front usb/kb code that might work for me. I tried to fix the source in /sys/src/cmd/usb/kb but the kernel seems ...

Where can I find the new kernel ?

Thanks guys. I'll try re-mailing as suggested.

I got an email from RS with a code I could use to place my order. I went ahead and did that - but mad e a mistake in my address - got the country wrong and didn't realize it when I placed my order. I realized my mistake when I got my invoice from RS by email. I tried calling them up and was asked to...