linux-lts 5.15.102-r0 & linux-edge 6.2.2-r0: trackpoint/-pad not detected on ThinkPad X220
dmesg output shows no sign of psmouse activation; ordinarily it would report serio1 for the Synaptics touchpad, and serio2 for IBM TrackPoint. Modprobe of psmouse and mousedev change nothing. USB mice plugged in after boot work fine.
Last seen working on LTS 5.15.94-r0.
Sanitized dmesg attached: dmesg-no-mouse-x220-20230313-sanitized
Resolved: hardware issue (loose trackpad cable), unrelated to kernel upgrade, lesson in changing only one variable at a time.