Not much going in RPi land these days. It's unbelievable that a whole industry branch gets dragged down currently.
However. Many of us still run and maintain RPis. I'd like to make you, the tweakers, aware of a recent change in the RPI firmware.
It's about the RPI LEDs. The PWR LED in particular.
Since the very beginning I outlined how to turn off all LEDs on the RPi.
However. Since kernel 5.15.56 there's a not yet widely known change.
It now requires a slight change in the settings of /boot/config.txt to get
the Power LED turned off.
Because - as a matter of fact - since kernel 5.15.56 it simply stays on!
Below the config you have to apply to turn off ALL LEDs on your PIs from kernel 5.15.56 onwards!
The most current kernel is 5.15.75 or similar btw.
If you still run older kernels, this change will for sure hit you sooner or later. Just keep it in mind.
Here's the config.txt change:
###turn off onboard LEDs###################
dtoverlay=act-led
###disable the ACT LED
dtparam=act_led_trigger=none
dtparam=act_led_activelow=off
###disable the PWR LED
dtparam=pwr_led_trigger=default-on
dtparam=pwr_led_activelow=off
###turn off ethernet port LEDs
dtparam=eth_led0=4
dtparam=eth_led1=4
##########################################
That's it. A pretty simple change. If you know it! Hope you'll manage.
Enjoy.
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