Green LED always on, but everything seems to be normal?

Question

Raspberry Pi 4 (8GB)

Ubuntu 20.04 (booting from USB, no SD card)

---

My green LED is constantly on, but everything seems to be running fine. I initially thought it may be because I'm seeding with Deluge, but when I stopped seeding the green LED still remains on. It's constantly solid and only blinks once every minute or two for 1-2 seconds and then returns to solid green.

Here are the Docker containers that I'm running:

• Bazarr
• Bitwarden
• Deluge
• Jackett
• Jellyfin
• Komga
• Nextcloud
• MariaDB
• Redis
• Portainer
• Radarr
• Sonarr
• Traefik
• Watchtower
• Wireguard

Answer 1

I do not think you've not supplied enough information to answer the question you've asked. Consequently, all you're likely to get for it is opinions; here's mine:

• Do some more research

• Recall the flicker fusion threshold, and recognize that you can't tell the difference between constantly on and a light that is turning on and off at a rate above the threshold.

• Understand that all of ]that software you've brought on board may be controlling the green led](https://www.heelpbook.net/2021/raspberry-pi-controlling-pwr-and-act-leds-red-and-green-leds/); i.e. use the process of elimination for each of your apps.

• Check /etc/fstab (or wherever Ubuntu stores this information) to see how your USB is mounted. Look for the line where your root filesystem / is mounted. If you don't see the noatime option, you may try adding it - perhaps like so:

PARTUUID=7f4939b6-02  /               ext4    defaults,noatime  0       1