Comment 5 for bug 1863239

Attached is the output of

sudo udevadm monitor -e

Output of lsusb:

till@till-x1yoga:~$ lsusb
Bus 002 Device 003: ID 0b95:1790 ASIX Electronics Corp. AX88179 Gigabit Ethernet
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 138a:0097 Validity Sensors, Inc.
Bus 001 Device 004: ID 04f2:b5ce Chicony Electronics Co., Ltd Integrated Camera
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 006: ID 056a:50b7 Wacom Co., Ltd Pen and multitouch sensor
Bus 001 Device 012: ID 03f0:7a12 HP, Inc HP OfficeJet Pro 8730
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
till@till-x1yoga:~$

Device is on Bus 001, Device 012, the HP OfficeJet Pro 8730

Here one sees that it is assigned to the "audio" group:

till@till-x1yoga:~$ ls -l /dev/bus/usb/*/*
crw-rw-r-- 1 root root 189, 0 Mar 17 11:45 /dev/bus/usb/001/001
crw-rw-r-- 1 root root 189, 2 Mar 17 11:45 /dev/bus/usb/001/003
crw-rw-r-- 1 root root 189, 3 Mar 17 11:45 /dev/bus/usb/001/004
crw-rw---- 1 root plugdev 189, 4 Mar 18 14:04 /dev/bus/usb/001/005
crw-rw-r-- 1 root root 189, 5 Mar 17 11:45 /dev/bus/usb/001/006
crw-rw----+ 1 root audio 189, 11 Mar 19 18:55 /dev/bus/usb/001/012
crw-rw-r-- 1 root root 189, 128 Mar 17 11:45 /dev/bus/usb/002/001
crw-rw-r-- 1 root root 189, 130 Mar 17 11:45 /dev/bus/usb/002/003
till@till-x1yoga:~$