ACPI Warning, then hang

[Jeremy Chadwick]

On Mon, Jun 10, 2013 at 09:18:14AM -0500, Bryce Edwards wrote:
> I'm getting the following warning, and then the system locks:
> 
> ACPI Warning: Incorrect checksum in table [(bunch of spaces)] - 0x29,
> should be 0x48
> 
> Here's a pic: http://db.tt/O6dxONzI
> 
> System is on a SuperMicro C7X58 motherboard that I just upgraded to
> BIOS 2.0a, which I would like to stay on if possible.  I tried
> adjusting all the ACPI related BIOS settings without success.

The message in question refers to hard-coded data in one of the many
ACPI tables (see acpidump(8) for the list -- there are many).  ACPI
tables are stored within the BIOS -- the motherboard/BIOS vendor has
full control over all of them and is fully 100% responsible for their
content.

It looks to me like they severely botched their BIOS, or somehow it got
flashed wrong.

You need to contact Supermicro Technical Support and tell them of the
problem.  They need to either fix their BIOS, or help figure out what's
become corrupted.  You can point them to this thread if you'd like.

I should note that the corruption/issue is major enough that you are
missing very key/important lines from your dmesg (after "avail memory"
but before "kdbX at kdbmuxX", which come from pure reliance upon ACPI.
Lines such as:

Event timer "LAPIC" quality 400
ACPI APIC Table: <PTLTD  	 APIC  >
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard

In the meantime, you can try booting without ACPI support (there should
be a boot-up menu option for that) and pray that works.  If it doesn't,
then your workaround is to roll back to an older BIOS version and/or put
pressure on Supermicro.  You will find their Technical Support folks are
quite helpful/responsive to technical issues.

Good luck and keep us posted on what transpires.

-- 
| Jeremy Chadwick                                   jdc at koitsu.org |
| UNIX Systems Administrator                http://jdc.koitsu.org/ |
| Making life hard for others since 1977.             PGP 4BD6C0CB |