Which is the board that "suspend to RAM" works?

[miminashi]

v5.04 / 1.3.2016 section in https://docs.armbian.com/Release_Changelog/

says "suspend to RAM and resume by power button works now (consumption less than 0.4W without peripherals)".

 

I'm looking for the board that works "suspend to RAM".

I have a NanoPi NEO, but it seems not.

 

Please tell me if "suspend to RAM" works on your board.

Thanks.

 

suspend to RAM and wakeup instruction:

 

$ echo mem > /sys/power/state

 

then, press "power key".

[Tido]

Hi miminashi,

 

Looking at it, I see that at that time and age armbian maintained what we call nowadays: stone age old Kernels like:

• rebuilt Cubieboard 1 & 2 with 3.4.110 a
• fixed Bluetooth on Cubietruck + rebuild with 3.4.110

the so called BSP Kernels 3.x (Board Support Package) are no longer supported by armbian. If you are willing to use such kernel with security issues and no longer maintained you might get "suspend to RAM" out of the box. If you prefer a current kernel you maybe carefully choose your SingleBoardComputer. Even better if you know C, you can help to get this for your board of choice running "suspend to RAM"  :-)

 

Do you know C ?

[Robsn]

Hello Tido.

 

I have an orangepi zero plus 2 h3 board running armbian 21.05.04 kernel 5.10.34 and I'm also looking for a way to put the board in Suspend-to-RAM and wakeup using some GPIO.

I know C, but I don't have the knowledge to enable this resource in the kernel. Can you give me some advice about how to start modifying the armbian kernel to enable Suspend-to-RAM and wakeup?

 

If possible, I would like to enable this on ubuntu 16.04, that is the distribution where I could enable bluetooth.

Edited August 9, 2021 by Robsn
fix distribution information

[Igor]

11 minutes ago, Robsn said:

but I don't have the knowledge to enable this resource in the kernel.

 

If things doesn't work out of the box, you have to prepare serious resources to get going. Then start here https://linux-sunxi.org/AR100/HardwareSharing

 

12 minutes ago, Robsn said:

If possible, I would like to enable this on ubuntu 16.04, that is the distribution

This forum provide best effort support for Armbian. For other distributions, seek their support channels. If any. If none, too bad.

Since you are new, welcome to read FAQ 1st. This give you some perception what you are asking for and its a way to save precious time and keep forum cleaner.

[xwiggen]

Or, if you're content with 2W and continuous function, read the excellent guide on https://docs.armbian.com/Hardware_Allwinner-H3/.

 

[Robsn]

I have managed to put Armbian on s2idle mode, and wakeup after 30 seconds using

echo “+30” > /sys/class/rtc/rtc0/wakealarm

echo mem > /sys/power/state

 

Now I have to enable wakeup from GPIO.

 

Someone have any advice about how to configure a GPIO to wakeup from s2idle?

[Robsn]

Hello!

 

I have an orangepi zero plus 2 h3 board running armbian 21.05.04 kernel 5.10.34 and I'm also looking for a way to put the board in S2idle and wakeup using some GPIO.

 

I have managed to put Armbian on s2idle mode, and wakeup after 30 seconds using

echo “+30” > /sys/class/rtc/rtc0/wakealarm

echo mem > /sys/power/state

 

Now I have to enable wakeup from GPIO.

 

Someone have any help about how to configure a GPIO to wakeup from s2idle?