It's Mar 15, 2022, and the answer today is:
The documentation is now located here:
- on your local file system:
/boot/overlays/README
- online at GitHub: the README file
The README is a rather choppy document, but you can find enough to get started. The parameters of interest are act_led_*
, and pwr_led_*
. There are three device tree parameters (dtparam
) for both act_led
and pwr_led
: _trigger
, _activelow
and _gpio
, but the documentation doesn't mention all possible values for them. Through guesswork, I learned the correct values to turn the activity/green and power/red LEDs OFF:
To turn both act_led
and pwr_led
OFF, add these two lines to the file /boot/config.txt
, and then reboot:
dtparam=act_led_trigger=none
dtparam=pwr_led_trigger=none
There are also parameters for extinguishing the Ethernet LEDs also, but they only work for the 3B+ & 4B models: eth_led0
& eth_led1
. Fortunately, the documentation does enumerate a set of values for the 3B+ and the 4B.
UPDATE: Additional details are now posted on GitHub