golden hour

/lib/udev/hwdb.d

File/Folder	Size	Actions
20-OUI.hwdb	1.36 MB
20-acpi-vendor.hwdb	123.63 KB
20-bluetooth-vendor-product.hwdb	30 KB
20-net-ifname.hwdb	111 B
20-pci-classes.hwdb	13.26 KB
20-pci-vendor-model.hwdb	2.47 MB
20-sdio-classes.hwdb	783 B
20-sdio-vendor-model.hwdb	3.97 KB
20-usb-classes.hwdb	7.88 KB
20-usb-vendor-model.hwdb	1.04 MB
22-OUI.hwdb	1.81 MB
22-acpi-vendor.hwdb	144.6 KB
22-bluetooth-vendor-product.hwdb	137.05 KB
22-net-ifname.hwdb	111 B
22-pci-classes.hwdb	14.85 KB
22-pci-vendor-model.hwdb	3.09 MB
22-sdio-classes.hwdb	811 B
22-sdio-vendor-model.hwdb	4.11 KB
22-usb-classes.hwdb	7.95 KB
22-usb-vendor-model.hwdb	1.38 MB
60-evdev.hwdb	11.54 KB
60-keyboard.hwdb	49.97 KB
62-evdev.hwdb	17.56 KB
62-keyboard.hwdb	75.82 KB
70-mouse.hwdb	9.2 KB
70-touchpad.hwdb	1.44 KB
72-mouse.hwdb	22.41 KB
72-pointingstick.hwdb	6.94 KB

Edit: 70-touchpad.hwdb

# This file is part of systemd.
#
# The lookup keys are composed in:
#   70-touchpad.rules
#
# Note: The format of the "touchpad:" prefix match key is a
# contract between the rules file and the hardware data, it might
# change in later revisions to support more or better matches, it
# is not necessarily expected to be a stable ABI.
#
# Match string format:
# touchpad:pnpid:<pnpid>:
#
# To add local entries, create a new file
#   /etc/udev/hwdb.d/71-touchpad-local.hwdb
# and add your rules there. To load the new rules execute (as root):
#   udevadm hwdb --update
#   udevadm trigger /dev/input/eventXX
# where /dev/input/eventXX is the touchpad in question. If in
# doubt, simply use /dev/input/event* to reload all input rules.
#
# If your changes are generally applicable, open a bug report on
#   http://bugs.freedesktop.org/enter_bug.cgi?product=systemd
# and include your new rules, a description of the device, and the
# output of
#   udevadm info /dev/input/eventXX
# (or /dev/input/event*).
#
# Allowed properties are:
#    TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1
#
# If the TOUCHPAD_HAS_TRACKPOINT_BUTTONS property is set, this
# device has # the trackpoint buttons wired up to the touchpad as
# BTN_0, BTN_1 and BTN_2. This affects the Lenovo X1 Carbon 3rd
# and the *50 series (T450, T550, etc.)

# Lenovo X1 Carbon 3rd
touchpad:pnpid:*LEN0048*:
# Lenovo W541
touchpad:pnpid:*LEN004a*:
# Lenovo T450s
touchpad:pnpid:*LEN200f*:
 TOUCHPAD_HAS_TRACKPOINT_BUTTONS=1