> >From the dmesg (below), this appears to be an old APM-based > >motherboard. The shutdown(8) manpage states that not all hardware > >supports automatic power down. That's fine if this hardware doesn't > >support it, but given the "Attempting to power down..." message, I am > >curious if it might be possible. > > > > apm0 at bios0: Power Management spec V1.2 > > apm0: AC on, battery charge unknown > > acpi at bios0 function 0x0 not configured > > Your dmesg show that your machine can do apm and acpi. OpenBSD uses > always apm if both is possible.
Wrong. There is a sophisticated heuristic in play. > Sometimes these old machines can > poweroff only with acpi, but not with apm. Wrong. Something else is wrong. > You can try to disable apm in > the kernel config. OpenBSD then uses acpi. Maybe this works for > poweroff. I have a old machine that can't poweroff with apm, but can do > it with acpi.
