"PowerButton pressed" randomly

[CosmicRay]

Hi there,
Been a quiet PBP user since july 2021, really love my pinebook and enjoy it (using manjaro).

Lately I have an issue with the power button.

Symptoms:
It seemed that it won't boot properly, despite no recent OS/FW updates and topped-up battery.
It would boot into a certain state where the LCD is lit up and a flashing '_' is flashing at top left corner, as expected.
Then, the flashing is halted, then continues until shutdown. The PBP reboots, ad infinitum.
From time to time it did load GUI to show the mouse pointer before resetting, rarely loading the login screen.
Another thing is that shutting down resulted in reboot. Long press on power button did shut it down for good though.
Lately otherwise it ususally make it into login without turning off.

Making a long story short, in the rare cases I managed to log in I got constant power-off dialogs popping at me.
That's a typical journal log I get on the machine (reverse order):

Code:

Oct 12 18:08:27 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:07:44 PinebookPro root[4904]: PowerButton pressed
Oct 12 18:07:44 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:07:28 PinebookPro root[4902]: PowerButton pressed
Oct 12 18:07:28 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:07:17 PinebookPro root[4897]: PowerButton pressed
Oct 12 18:07:17 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:06:44 PinebookPro root[4892]: PowerButton pressed
Oct 12 18:06:44 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:05:58 PinebookPro root[4879]: PowerButton pressed
Oct 12 18:05:58 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:05:26 PinebookPro root[4876]: PowerButton pressed
Oct 12 18:05:26 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:04:36 PinebookPro root[4873]: PowerButton pressed
Oct 12 18:04:36 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:03:28 PinebookPro root[4862]: PowerButton pressed
Oct 12 18:03:28 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:03:10 PinebookPro root[4859]: PowerButton pressed
Oct 12 18:03:10 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:02:56 PinebookPro root[4857]: PowerButton pressed
Oct 12 18:02:56 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:02:31 PinebookPro root[4855]: PowerButton pressed
Oct 12 18:02:31 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:02:07 PinebookPro root[4851]: PowerButton pressed
Oct 12 18:02:06 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:01:35 PinebookPro root[4844]: PowerButton pressed
Oct 12 18:01:35 PinebookPro systemd-logind[520]: Power key pressed short.
Oct 12 18:00:57 PinebookPro root[4831]: PowerButton pressed
Oct 12 18:00:57 PinebookPro systemd-logind[520]: Power key pressed short.

Well you get the idea. That's really annoying.
I could probably remap the power button? But I do fear that the underlying condition will kill the power button altogether one day, and I wont be able to properly power the device on.

I took a look at the schematics. I guess that something is pulling the CPU power line, but not the PMIC one? Or is the PMIC less sensitive to that signal?
If it's the first issue that it's not a keyboard issue, and I have no clue what issue it is.
I might be able to sense the proper test points later, but I'd rather ask here first if anyone had such an issue or have any insight into this issue (I couldn't find such thing in the forum or elsewhere).

Kudos

[CosmicRay]

Update - yesterday the power button was only spontaneously triggered once.
Today - not at all, in several hours of uptime.

I still have no idea what happened.
Maybe it's moist that got into the pinebook or something?

[Tazdevl]

Update - yesterday the power button was only spontaneously triggered once.
Today - not at all, in several hours of uptime.

I still have no idea what happened.
Maybe it's moist that got into the pinebook or something?

Found your topic using google; My pinebook had a non functioning keyboard last week. Restored after reboot
This week when I need it, the trackpad and keyboard are both gone. Not sure why, mine has been flawless for ages.

Time to check connections I guess as mine doesn't look like it has been wet.

[CosmicRay]

So quick update:
It was okay for sometime, especially when used daily.
It seems that the pinebook, when shut down, is waking up for 25-30 seconds, than shut down by "suspending", and in 20 seconds wake up again.
It happened ~15 times after the last use I had - about 2 weeks ago.

2 days ago I started the machine only to update the system. After standard shutdown and before going to bed, I noticed that it's on, booted and waiting in login screen.
I hard-shutdown it with a long powerbutton press.

Today I found it running again. Hard reset it again and then booted up.
I couldn't fine it's journal file unfortunately, so I don't know how long it was up.
I do know that 2 days ago it had ~30 on/off cycles.
I'm writing this from my own PBP and had one random shutdown dialogue in the process, so I guess the issue really is still around.

I guess that I'll have to open the case after all :/

@Tazdevl - how did your own issue has turned out?

[Tazdevl]

So far flawless, think I reseated the flat cables in the end.