<https://forum.armbian.com/topic/18934-network-activity-led-no-longer-works/>
<http://schema.org/text>
"Helios64 network activity light no longer flashes (always off).\n \n\n\n\tI have one ethernet cable attached to eth0 and enabled.\n \n\n\n\tOtherwise eth0 is working fine\n \n\n\n\tHelios64 is rebooted each 24 hours.  \n \n\n\n\t \n \n\n\n\tIf I echo \"1\" to /sys/class/leds/helios64:blue:net/brightness then LED lights up OK.    \n \n\n\n\t \n \n\n\n\tContents of /sys/class/leds/helios64:blue:net/trigger \n \n\n[none] usb-gadget usb-host kbd-scrolllock kbd-numlock kbd-capslock kbd-kanalock kbd-shiftlock kbd-altgrlock kbd-ctrllock kbd-altlock kbd-shiftllock kbd-shiftrlock kbd-ctrlllock kbd-ctrlrlock usbport disk-activity disk-read disk-write ide-disk mtd nand-disk heartbeat cpu cpu0 cpu1 cpu2 cpu3 cpu4 cpu5 activity default-on panic mmc1 mmc2 netdev stmmac-0:00:link stmmac-0:00:1Gbps stmmac-0:00:100Mbps stmmac-0:00:10Mbps rc-feedback tcpm-source-psy-4-0022-online gpio-charger-online rfkill-any rfkill-none phy0rx phy0tx phy0assoc phy0radio rfkill0\n\n\n\t \n \n\n\n\tSystem level\n \n\nLinux Helios64 5.10.63-rockchip64 #21.08.2 SMP PREEMPT Wed Sep 8 10:57:23 UTC 2021 aarch64 GNU/Linux\n\nPRETTY_NAME=\"Armbian 21.08.2 Buster\"\nNAME=\"Debian GNU/Linux\"\nVERSION_ID=\"10\"\nVERSION=\"10 (buster)\"\nVERSION_CODENAME=buster\nID=debian\nHOME_URL=\"https://www.debian.org/\"\nSUPPORT_URL=\"https://www.debian.org/support\"\nBUG_REPORT_URL=\"https://bugs.debian.org/\"\n\n\n\t \n\t \n \n"
<https://forum.armbian.com/topic/18934-network-activity-led-no-longer-works/?tab=comments#comment-129720>