Ok just tried it with main battery and a few different button pressing
schemes.

1. Sleep / suspend: Impossible to get it back. If I press the power button
for long enough, it does a full power off. After that, see 2.

2. Normal shutdown: I got it to wake up a couple of times by pressing the
power button for 5+ seconds, but this only happens sometimes. And if it
does work, it's like it thinks for a few seconds before turning on any LEDs
and proceeding.

Having a battery installed doesn't change anything, really. Except that
when it doesn't turn on, I have to pop the battery out to make it work
again..

R

Am Di., 17. Jan. 2023 um 11:33 Uhr schrieb Rafael Send <
flyingfishfin...@gmail.com>:

> Hi,
> The *CMOS *(BIOS) battery is installed, yes. The main power battery is
> not - I can try that later but obviously I should be able to power on the
> thing when the battery is not installed. FWIW, stock BIOS does not have
> this problem.
>
> R
>
> Am Mo., 16. Jan. 2023 um 20:39 Uhr schrieb Martin Roth <
> gauml...@tutanota.com>:
>
>> Have you tested with a battery installed?  I'm imagining a hardware
>> glitch on shutdown that causes an EC failure.  Many older desktop platforms
>> wouldn't even power on if there wasn't a CMOS battery installed.
>>
>> Martin
>>
>> Jan 16, 2023, 11:08 by flyingfishfin...@gmail.com:
>>
>> > Morning,
>> > Just checking in to see if anyone had some advice on where I could look
>> to try and fix this problem. Note that it also happens for sleep and
>> suspend modes, not just shutdowns.
>> >
>> > Thanks,
>> > Rafael
>> >
>> > Am Do., 12. Jan. 2023 um 09:16 Uhr schrieb Rafael Send <>
>> flyingfishfin...@gmail.com> >:
>> >
>> >> Oh, there's not currently a battery installed - so that would do it.
>> Thanks for a lead.
>> >>
>> >> What's the path to fixing that? Different EC blob extracted from stock
>> BIOS, something in Coreboot to check?
>> >>
>> >> R
>> >>
>> >> Am Do., 12. Jan. 2023 um 09:11 Uhr schrieb Matt DeVillier <>>
>> matt.devill...@gmail.com>> >:
>> >>
>> >>> sounds to me like AP shutdown is causing the EC to power off as well,
>> so it's not active to respond to the subsequent power button press. Not
>> sure why disconnecting AC power would reset that though, unless you are
>> also disconnecting the internal battery as well
>> >>>
>> >>> On Thu, Jan 12, 2023 at 11:08 AM Rafael Send <>>>
>> flyingfishfin...@gmail.com>>> > wrote:
>> >>>
>> >>>> Hi,
>> >>>> As folks may have gathered from my other question about the GCC
>> build environment, I've been playing around with the old X2100 port (>>>>
>> https://github.com/mjg59/coreboot/tree/x2100_ng>>>> ).
>> >>>>
>> >>>> I got it to build and added the latest version of MrChromebox's
>> Tianocore, but there's still one issue that keep is from being very useable.
>> >>>>
>> >>>> After flashing / plugging in the machine, the power button will turn
>> it on, but only once. If I shut down any OS, or even if it goes to sleep or
>> suspends, the power button no longer has any effect so the only "fix" is
>> currently to unplug power and re-plug it.
>> >>>>
>> >>>> Where might I look for causes of this? Is it a shutdown state thing?
>> ACPI?
>> >>>>
>> >>>> Thanks,
>> >>>> Rafael
>> >>>> _______________________________________________
>> >>>>  coreboot mailing list -- >>>> coreboot@coreboot.org
>> >>>>  To unsubscribe send an email to >>>> coreboot-le...@coreboot.org
>> >>>>
>>
>>
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