O.K. I'm back. Need to dig out the USB wireless mousie.
Repeating myself...every Linux or Debian version says the same thing.
j@mak9:~/Desktop$ lsmod |grep psmouse
psmouse 106647 0
j@mak9:~/Desktop$
That was fun...touchscreen only.
j@mak9:~/Desktop$ ls -l /dev/input by-path
ls: cannot access by-path: No such file or directory
/dev/input:
total 0
drwxr-xr-x 2 root root 80 Aug 18 13:40 by-id
drwxr-xr-x 2 root root 140 Aug 18 13:40 by-path
crw-r----- 1 root root 13, 64 Aug 18 13:40 event0
crw-r----- 1 root root 13, 65 Aug 18 13:40 event1
crw-r----- 1 root root 13, 74 Aug 18 13:40 event10
crw-r----- 1 root root 13, 75 Aug 18 13:40 event11
crw-r----- 1 root root 13, 76 Aug 18 13:40 event12
crw-r----- 1 root root 13, 66 Aug 18 13:40 event2
crw-r----- 1 root root 13, 67 Aug 18 13:40 event3
crw-r----- 1 root root 13, 68 Aug 18 13:40 event4
crw-r----- 1 root root 13, 69 Aug 18 13:40 event5
crw-r----- 1 root root 13, 70 Aug 18 13:40 event6
crw-r----- 1 root root 13, 71 Aug 18 13:40 event7
crw-r----- 1 root root 13, 72 Aug 18 13:40 event8
crw-r----- 1 root root 13, 73 Aug 18 13:40 event9
crw-r----- 1 root root 13, 63 Aug 18 13:40 mice
crw-r----- 1 root root 13, 32 Aug 18 13:40 mouse0
crw-r----- 1 root root 13, 33 Aug 18 13:40 mouse1
j@mak9:~/Desktop$
crw-r----- 1 root root 13, 32 Aug 18 13:40 mouse0
crw-r----- 1 root root 13, 33 Aug 18 13:40 mouse1
j@mak9:~/Desktop$ dmesg|grep mouse
[ 1.958334] mousedev: PS/2 mouse device common for all mice
[ 2.511209] psmouse serio2: alps: Unknown ALPS touchpad: E7=00 00 64, EC=00 00 64
[ 2.617780] psmouse serio2: Failed to enable mouse on isa0060/serio2
[ 2.678202] psmouse serio2: Failed to enable mouse on isa0060/serio2
j@mak9:~/Desktop$

That's different.
You check it out. ALPS?
My thought was an ACPI issue......
Time to eat yet again.