Looks like a problem with Soarer's converter to me right now.
If no keyboard is plugged into the converter and you start hid_listen first and then plug the converter into the computer, hid_listen should show
Waiting for new device:....................
Listening:
wEE
remaining: FFFC
Keyboard ID: 0000
Code Set: 1
Mode: PC/XT
Maybe you can test that first?
Here's what Soarer's converter should say if you first start hid_listen and then plug in Soarer's converter with a Model M connected to it.
It's important that you always plug your model M into the converter first, and only then the converter into the computer. For debugging, it's important that you start hid_listen first before you plug in the converter.
Waiting for device:...........
Listening:
rAA wEE rEE wF2 rFA rAB r83
remaining: FFFC
Keyboard ID: AB83
Code Set: 2 (extended)
Mode: AT/PS2
wED rFA w00 rFA
r11 +E2 dE2
When you plug out the converter, it should say:
Device disconnected.