On boot, sleep or wake-up systemd logs errors to syslog e.g.

systemd-udevd[7921]: failed to execute '/usr/lib/udev/lmt-udev' 'lmt-udev
auto': No such file or directory
systemd-udevd[9525]: failed to execute '/usr/lib/udev/lmt-udev' 'lmt-udev force
modules=usb-autosuspend devices=3-4': No such file or directory

This error comes from /usr/lib/udev/rules.d/99-laptop-mode.rules where the full
path to 'lmt-udev' is not specified - it should be
'/usr/lib/udev/rules.d/lmt-udev' rather than just 'lmt-udev'.

Correcting that path removes the error.