I have started seeing the following on boot since some time:
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: cannot find EC device
device_attach: acpi_wmi0 attach returned 6
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: cannot find EC device
device_attach: acpi_wmi0 attach returned 6
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: cannot find EC device
device_attach: acpi_wmi0 attach returned 6
acpi_wmi0: <ACPI-WMI mapping> on acpi0
acpi_wmi0: cannot find EC device
device_attach: acpi_wmi0 attach returned 6
Likely following this commit:
commit 708d048ccfdacf6199cc08a56aa05a9c899441fd
Author: Vladimir Kondratyev <w...@freebsd.org>
Date: Sat Oct 31 22:19:39 2020 +0000
acpi_wmi(4): Add ACPI_PNP_INFO
While the reason is obvious -- there's no EC in this system (Gigabyte X299X
AORUS MASTER desktop motherboard), at least searching the `acpidump -dt` output
doesn't show any PNP0C09 entries -- it certainly looks like "something is
broken" when first noticed. I wonder if we could/should handle this gracefully
-- no EC, do nothing, simply exit?
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