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:~$ ** Attachment added: "udevadm-monitor-e-plug-hp-officejet-pro-8730-20200319-log.txt" https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1863239/+attachment/5338953/+files/udevadm-monitor-e-plug-hp-officejet-pro-8730-20200319-log.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863239 Title: /dev/bus/usb/*/* device file of HP multi-function printer assigned to "audio" group To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libmtp/+bug/1863239/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
