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Date: Mon, 30 May 2005 09:16:29 -0700
From: David Marshall <dmarshall@gmail.com>
To: freebsd-questions@freebsd.org
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Subject: AE_NO_ACPI_TABLES: Is BIOS Update the First Step?
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Hi,

My boss just put a new server in our colo.  It has a Tyan Thunder K8SR
motherboard with 2 Opterons.  When I boot an SMP kernel, dmesg.boot
includes the following:

CPU: AMD Opteron(tm) Processor 246 (1991.88-MHz K8-class CPU)
 Origin =3D "AuthenticAMD"  Id =3D 0xf58  Stepping =3D 8
 Features=3D0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,=
MCA,CM
OV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>
 AMD Features=3D0xe0500800<SYSCALL,NX,MMX+,LM,3DNow+,3DNow>
real memory  =3D 2147483648 (2048 MB)
avail memory =3D 2061676544 (1966 MB)
   ACPI-0159: *** Error: AcpiLoadTables: Could not get RSDP, AE_NO_ACPI_TAB=
LES
   ACPI-0213: *** Error: AcpiLoadTables: Could not load tables: AE_NO_ACPI_=
TABL
ES
ACPI: table load failed: AE_NO_ACPI_TABLES

My searches have indicated that the most prevalent causes of this are
ACPI not being enabled or an out-of-date BIOS.  The motherboard manual
indicates that ACPI is enabled by default, so should our next step be
just to update the BIOS and hope for the best?

Is there a clever way to determine our BIOS version without physically
accessing the server?

TIA!