Orange PI PC: Power button = no function? (with Armbian)

d4t3n7od

Hello friends,

a couple of days ago I received my Orange PI PC and am pretty impressed so far!

What I understand so far is:
1. When the device is plugged it, the LEDs on the LAN port light up and it starts.
2. The Power LED only lights up when a working system is booted because it is software controlled.
This can be confirmed by "echo 1 > /sys/class/leds/red_led/brightness" to turn it off (or 0 to turn it on)
3. When I shutdown the booted Armbian with shutdown -h now, the device turns off:
First the LAN LEDs go dark, at last the Power LED.

Now, if I want to turn it on again, the PWR button does nothing.
I have to dis- and reconnect the DC plug.

I noticed that pressing and releasing the button increases (from /proc/interrupts) the counts of
irq3 (sunxi_gpio_irq_chip gk_EINT) and
irq77 (GIC PL)
for CPU0 by 1 each, so a short press increases those by 2.

Now, my questions:
1. What use is the power button, as it appears only to be an interrupt/software event usable when the system is running?
Maybe for sleeping / waking up a correctly configured kernel?
2. Is there any other way to turn on the OPI PC after shutting it down? Always having to pull/plug in power appears pretty inconvenient to me.

Thanks for your help

Greets, Lutz

Nishayume

I have the same problem.The power button only work when OS is loaded and give you the options for reboot poweroff etc.
Is this a problem?
How to poweron my orange pi pc withouth unplug and plug the power adapter?

jernej

As d4t3n7od already found out, power button is just an ordinary button connected to GPIO pin. You can use it only for suspend/resume. Once CPU is shut down, it is of no use.