** Also affects: linux-raspi (Ubuntu Resolute)
Importance: Undecided
Assignee: Jose Ogando Justo (joseogando)
Status: Confirmed
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https://bugs.launchpad.net/bugs/2060942
Title:
Missing power LED on earlier models
Status in linux-raspi package in Ubuntu:
Confirmed
Status in linux-raspi source package in Resolute:
Confirmed
Bug description:
The Pi Zero 2W, 2B, and 3B all fail to light their power LED once the
kernel starts booting under noble (I hope this is only on noble; I
only just noticed this during ISO testing and it's quite possible I
missed it on earlier revisions...).
Specifically, on the 2W (which only has a combined activity and power
LED), /sys/class/leds/ACT/trigger is [actpwr] on RaspiOS, which makes
it illuminate by default and blink off during mmc0 activity. This
trigger setting appears to be unavailable under the Ubuntu kernel.
On the 2B and 3B, the trigger is set to [none] which results in the
LED initially illuminating while the bootloader is running and then
disappearing. The default under RaspiOS is [input] which makes it
illuminate normally, but switch off on undervolt. This trigger
settging also appears unavailable under the Ubuntu kernel.
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