LEDs on Asus RT-N56U are disabled

[ciprian.alexan]

Asus RT-N56U is running OpenWrt Chaos Calmer 15.05

There are 6 LEDs on the front panel:

• power
• 2.4 radio
• 5.0 radio
• LAN
• WAN
• USB

First 3 LEDs are working as expected.

The problem is that the last 3 LEDs from the list above (LAN, WAN, USB) are not working.
They are always off regardless the status of interfaces or USB devices connected.
These LEDs are working as expected when router is running Asus firmware.

This is the list of installed packages on router:

root@Asus_RT-N56U_17:~# opkg list-installed
base-files - 157-r46767
block-mount - 2015-05-24-09027fc86babc3986027a0e677aca1b6999a9e14
busybox - 1.23.2-1
dnsmasq - 2.73-1
dropbear - 2015.67-1
e2fsprogs - 1.42.12-1
fdisk - 2.25.2-4
firewall - 2015-07-27
fstools - 2015-05-24-09027fc86babc3986027a0e677aca1b6999a9e14
hostapd-common - 2015-03-25-1
ip - 4.0.0-1
ip6tables - 1.4.21-1
iptables - 1.4.21-1
iw - 3.17-1
jshn - 2015-06-14-d1c66ef1131d14f0ed197b368d03f71b964e45f8
jsonfilter - 2014-06-19-cdc760c58077f44fc40adbbe41e1556a67c1b9a9
kernel - 3.18.20-1-7b6dda72d602ec4f38d4d92805f8017c
kmod-cfg80211 - 3.18.20+2015-03-09-3
kmod-crypto-aes - 3.18.20-1
kmod-crypto-arc4 - 3.18.20-1
kmod-crypto-core - 3.18.20-1
kmod-eeprom-93cx6 - 3.18.20-1
kmod-fs-msdos - 3.18.20-1
kmod-fs-vfat - 3.18.20-1
kmod-gpio-button-hotplug - 3.18.20-1
kmod-ip6tables - 3.18.20-1
kmod-ipt-conntrack - 3.18.20-1
kmod-ipt-core - 3.18.20-1
kmod-ipt-nat - 3.18.20-1
kmod-ipv6 - 3.18.20-1
kmod-leds-gpio - 3.18.20-1
kmod-lib-crc-ccitt - 3.18.20-1
kmod-lib-crc-itu-t - 3.18.20-1
kmod-mac80211 - 3.18.20+2015-03-09-3
kmod-nf-conntrack - 3.18.20-1
kmod-nf-conntrack6 - 3.18.20-1
kmod-nf-ipt - 3.18.20-1
kmod-nf-ipt6 - 3.18.20-1
kmod-nf-nat - 3.18.20-1
kmod-nf-nathelper - 3.18.20-1
kmod-nls-base - 3.18.20-1
kmod-nls-cp437 - 3.18.20-1
kmod-nls-iso8859-1 - 3.18.20-1
kmod-ppp - 3.18.20-1
kmod-pppoe - 3.18.20-1
kmod-pppox - 3.18.20-1
kmod-rt2800-lib - 3.18.20+2015-03-09-3
kmod-rt2800-mmio - 3.18.20+2015-03-09-3
kmod-rt2800-pci - 3.18.20+2015-03-09-3
kmod-rt2800-soc - 3.18.20+2015-03-09-3
kmod-rt2x00-lib - 3.18.20+2015-03-09-3
kmod-rt2x00-mmio - 3.18.20+2015-03-09-3
kmod-rt2x00-pci - 3.18.20+2015-03-09-3
kmod-scsi-core - 3.18.20-1
kmod-slhc - 3.18.20-1
kmod-usb-core - 3.18.20-1
kmod-usb-ohci - 3.18.20-1
kmod-usb-storage - 3.18.20-1
kmod-usb-uhci - 3.18.20-1
kmod-usb2 - 3.18.20-1
libblkid - 2.25.2-4
libblobmsg-json - 2015-06-14-d1c66ef1131d14f0ed197b368d03f71b964e45f8
libc - 0.9.33.2-1
libext2fs - 1.42.12-1
libgcc - 4.8-linaro-1
libip4tc - 1.4.21-1
libip6tc - 1.4.21-1
libiwinfo - 2015-06-01-ade8b1b299cbd5748db1acf80dd3e9f567938371
libiwinfo-lua - 2015-06-01-ade8b1b299cbd5748db1acf80dd3e9f567938371
libjson-c - 0.12-1
libjson-script - 2015-06-14-d1c66ef1131d14f0ed197b368d03f71b964e45f8
libkmod - 20-1
liblua - 5.1.5-1
libnl-tiny - 0.1-4
libpthread - 0.9.33.2-1
librt - 0.9.33.2-1
libsmartcols - 2.25.2-4
libubox - 2015-06-14-d1c66ef1131d14f0ed197b368d03f71b964e45f8
libubus - 2015-05-25-f361bfa5fcb2daadf3b160583ce665024f8d108e
libubus-lua - 2015-05-25-f361bfa5fcb2daadf3b160583ce665024f8d108e
libuci - 2015-04-09.1-1
libuci-lua - 2015-04-09.1-1
libusb-1.0 - 1.0.19-1
libuuid - 2.25.2-4
libxtables - 1.4.21-1
lua - 5.1.5-1
luci - git-15.248.30277-3836b45-1
luci-app-firewall - git-15.248.30277-3836b45-1
luci-base - git-15.248.30277-3836b45-1
luci-lib-ip - git-15.248.30277-3836b45-1
luci-lib-nixio - git-15.248.30277-3836b45-1
luci-mod-admin-full - git-15.248.30277-3836b45-1
luci-proto-ipv6 - git-15.248.30277-3836b45-1
luci-proto-ppp - git-15.248.30277-3836b45-1
luci-theme-bootstrap - git-15.248.30277-3836b45-1
mtd - 21
netifd - 2015-06-08-8795f9ef89626cd658f615c78c6a17e990c0dcaa
odhcp6c - 2015-07-13-024525798c5f6aba3af9b2ef7b3af2f3c14f1db8
odhcpd - 2015-05-21-2ebf6c8216287983779c8ec6597d30893b914a7c
opkg - 9c97d5ecd795709c8584e972bfdf3aee3a5b846d-7
pciutils - 3.3.1-1
ppp - 2.4.7-6
ppp-mod-pppoe - 2.4.7-6
procd - 2015-08-16-0da5bf2ff222d1a499172a6e09507388676b5a08
rpcd - 2015-05-17-3d655417ab44d93aad56a6d4a668daf24b127b84
samba36-server - 3.6.25-5
swconfig - 10
ubox - 2015-07-14-907d046c8929fb74e5a3502a9498198695e62ad8
ubus - 2015-05-25-f361bfa5fcb2daadf3b160583ce665024f8d108e
ubusd - 2015-05-25-f361bfa5fcb2daadf3b160583ce665024f8d108e
uci - 2015-04-09.1-1
uhttpd - 2015-08-17-f91788b809d9726126e9cf4384fedbbb0c5b8a73
uhttpd-mod-ubus - 2015-08-17-f91788b809d9726126e9cf4384fedbbb0c5b8a73
usbutils - 007-1
usign - 2015-05-08-cf8dcdb8a4e874c77f3e9a8e9b643e8c17b19131
wireless-tools - 29-5
wpad-mini - 2015-03-25-1
zlib - 1.2.8-1