Backlit keyboard issue

/sys/class/leds# ls -lh
total 0
lrwxrwxrwx 1 root root 0 Jul 15 16:03 input0::capslock -> ../../devices/platform/i8042/serio0/input/input0/input0::capslock
lrwxrwxrwx 1 root root 0 Jul 15 16:03 input0::numlock -> ../../devices/platform/i8042/serio0/input/input0/input0::numlock
lrwxrwxrwx 1 root root 0 Jul 15 16:03 input0::scrolllock -> ../../devices/platform/i8042/serio0/input/input0/input0::scrolllock
lrwxrwxrwx 1 root root 0 Jul 15 16:03 phy0-led -> ../../devices/pci0000:00/0000:00:1d.2/0000:03:00.0/leds/phy0-led