Comment # 27 on bug 938659 from Johannes Meixner

Created attachment 641828 [details]
# journalctl | egrep '^Jul 23 14:29|^Jul 23 14:30' >/tmp/journalctl.out

I had also done
# udevadm control -l debug
and in the attachment there is the output of
# journalctl | egrep '^Jul 23 14:29|^Jul 23 14:30'

In particular it contains (excerpt):
---------------------------------------------------------------------------
Jul 23 14:29:58 e35 kernel: usb 1-5: New USB device found, idVendor=04f9,
 idProduct=0022
...
Jul 23 14:29:58 e35 systemd-udevd[1661]: Reading rules file:
 /usr/lib/udev/rules.d/50-udev-default.rules
...
Jul 23 14:29:58 e35 systemd-udevd[1696]: MODE 0664
 /usr/lib/udev/rules.d/50-udev-default.rules:38
Jul 23 14:29:58 e35 systemd-udevd[1696]: GROUP 7
 /usr/lib/udev/rules.d/50-udev-default.rules:50
Jul 23 14:29:58 e35 systemd-udevd[1696]: RUN '/bin/bash -c 'ls -l
 /dev/bus/usb/*/* >/tmp/ls-l_dev_bus_usb''
 /usr/lib/udev/rules.d/50-udev-default.rules:50
...
Jul 23 14:29:58 e35 systemd-udevd[1696]: GROUP 7
 /usr/lib/udev/rules.d/50-udev-default.rules:48
---------------------------------------------------------------------------

Here the mentioned lines in my /usr/lib/udev/rules.d/50-udev-default.rules
---------------------------------------------------------------------------
# cat -n /usr/lib/udev/rules.d/50-udev-default.rules | egrep ' 38| 50| 48'
    38  SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", MODE="0664"
    48  KERNEL=="lp[0-9]*", GROUP="lp"
    50  SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device",
 ENV{ID_USB_INTERFACES}=="*:0701??:*", GROUP="lp" RUN+="/bin/bash -c
 'ls -l /dev/bus/usb/*/* >/tmp/ls-l_dev_bus_usb'"
---------------------------------------------------------------------------