Laptop 13 with AMD AI 370: out of battery after 2-3 days of suspend to RAM

[jimis0]

As the title says, I’m facing the problem of finding my laptop completely off after 2 to 3 days of suspend to RAM (depends on the battery it had before suspend, but definitely between 60 and 90%). It seems it drains the battery too fast while being suspended.

Finding the laptop completely dead with zero charge hurts the battery (deep discharges compromise battery longevity) and my productivity (all open windows are lost).

I have investigated a couple of possible causes:

• At first I thought that suspend failed and the laptop was still on, which is invisible if you have closed the lid. That doesn’t seem to be the case: I now hit the “suspend” choice in software and wait until successful sleep and blinking fingerprint reader.
• Then I read that there is a possibility of installing the USB/DisplayPort ports in the wrong order that causes higher power consumption. I’m in the clear here: Ports 1 and 3 have USB type-c expansions slots, while USB-A is on port 4 (and port 2 has HDMI).
• Finally I read that Linux provides a deep state for system suspend, but I see that my Framework only supports s2idle:

  $ cat /sys/power/mem_sleep 
  [s2idle]
  

Any idea if I can (even with debug/test kernel options) turn on the “deep” sleep choice?
Otherwise, how can I reduce the battery drain during suspend to RAM?

[cmemory]

Sadly, based on comments by AMD devs and silence by framework devs, it appears that the recommended solution is to use hibernate instead of sleep.

[Charlie_6]

The AMD AI 370 does not have suspend-to-RAM and that’s the reason of high battery drain

[jimis0]

So it’s an issue of the CPU? Can you point me to comments or docs by AMD?
I wish I knew in advance, I would have chosen a different model… Is the whole AI 300 series of processors the same?

[Charlie_6]

The suspend-to-RAM is phasing out thanks to Microslop. The models with known [deep] avaliable are FL13 11~13gen intel and FL12, idk if Core Ultra has it.

Another way to get [deep] is to use Smokeless_UMAF. Go to AMD PBS_Hidden > Power Saving Configurations > S3/Modern Standby Support. You can switch to S3, however , it’s not guaranteed to work.