Loading the required kernel modules such as ledtrig-pattern via
/etc/modules-load.d may introduce a race condition on some systems such
as non-systemd based distros. Load the kernel modules using the builtin
'kmod load' udev command instead.
Reads the compatible list of the device and tries to find a device-specific theme file in all directories. If no configuration is found, we fall back to a default theme file. The device-specific theme file can always be overriden by specifying the FEEDBACK_THEME environment variable