Backlit keyboard issue (PART 2)

/sys/class/leds/phy0-led# ls -lh
total 0
-rw-r--r-- 1 root root 4.0K Jul 15 16:17 brightness
lrwxrwxrwx 1 root root    0 Jul 15 16:17 device -> ../../../0000:03:00.0
-r--r--r-- 1 root root 4.0K Jul 15 16:17 max_brightness
drwxr-xr-x 2 root root    0 Jul 15 16:17 power
lrwxrwxrwx 1 root root    0 Jul 15 16:17 subsystem -> ../../../../../../class/leds
-rw-r--r-- 1 root root 4.0K Jul 15 16:17 trigger
-rw-r--r-- 1 root root 4.0K Jul 15 16:17 uevent