Hi,

From: Christoph Egger <Christoph_Egger@gmx.de>
Subject: ACPI Error
Date: Sat, 16 Aug 2003 17:36:59 +0200 (MEST)

> NetBSD 1.6W (MYKERNEL) #4: Sat Aug 16 13:01:34 CEST 2003
>        
> root@athene.eggernet.de:/usr/src-current/sys/arch/i386/compile/MYKERNEL
> total memory = 255 MB
> avail memory = 232 MB
> using 3297 buffers containing 13188 KB of memory
> BIOS32 rev. 0 found at 0xf04a0
> mainbus0 (root)
>     ACPI-0162: *** Error: AcpiLoadTables: Could not get RSDP,
> AE_NO_ACPI_TABLES
>     ACPI-0216: *** Error: AcpiLoadTables: Could not load tables:
> AE_NO_ACPI_TABL
> ES
> ACPI: unable to load tables: 2

These messages mean the kernel could not find RSDP (signature
in BIOS, pointing to ACPI tables).

Even if your motherboard says "ACPI ready", its BIOS may
not support ACPI.  If you are sure the BIOS is ACPI ready
and has RSDP and other ACPI tables, it might be a software
issue.

If you are interested, /sys/dev/acpi/acpica/Subsystem/tbxfroot.c
might be a good start point for your problem.

---
Takayoshi Kochi