Debian USB issues, no keyboard mouse

Is there a way to make the tinypilot just look like a keyboard versus hub with keyboard, mouse and mass storage as a baby step?

We have not tested that option extensively. See this post for bare pointers. I will look into it myself next week. Have a great weekend @anidea!

Does that all look as expected?

It's all normal. See below exactly the same messages on my TinyPilot, which is working wonderfully.

[    3.322075] dwc2 fe980000.usb: supply vusb_d not found, using dummy regulator
[    3.322457] dwc2 fe980000.usb: supply vusb_a not found, using dummy regulator
[    3.534932] dwc2 fe980000.usb: EPs: 8, dedicated fifos, 4080 entries in SPRAM
[    3.535639] dwc2 fe980000.usb: DWC OTG Controller
[    3.535698] dwc2 fe980000.usb: new USB bus registered, assigned bus number 3
[    3.535813] dwc2 fe980000.usb: irq 38, io mem 0xfe980000

Is there a way to make the tinypilot just look like a keyboard versus hub with keyboard, mouse and mass storage as a baby step?

I gave it a try. See commands/snippet below. I am not sure how this will work for you, since the TinyPilot is still being presented as a hub (with only a keyboard attached); I commented out the mouse parts. Mass storage is not presented to the target computer until you mount an ISO, see the following FAQ for more details: How do I disable virtual media on my TinyPilot?.

PROCEDURE

cd /opt/tinypilot-privileged && \
  sudo cp -p init-usb-gadget init-usb-gadget.original && \
  sudo sed --in-place '103,149 {s/^/#/}' init-usb-gadget && \
  sudo sed --in-place '159 {s/^/#/}' init-usb-gadget && \
  cd /opt/tinypilot-privileged/lib && \
  sudo cp -p usb-gadget.sh usb-gadget.sh.original && \
  sudo sed --in-place '24 {s/^/#/}' usb-gadget.sh && \
  sudo reboot

FALLBACK

cd /opt/tinypilot-privileged && \
  sudo cp -p init-usb-gadget.original init-usb-gadget && \
  cd /opt/tinypilot-privileged/lib && \
  sudo cp -p usb-gadget.sh.original usb-gadget.sh && \
  sudo reboot