7.3-STABLE acpi and mpt problems?

[Andriy Gapon]

on 18/06/2010 10:06 Lystopad Olexandr said the following:
>  Hello, John Baldwin!
> 
> On Wed, Jun 16, 2010 at 07:55:27AM -0400
> jhb at freebsd.org wrote about "Re: 7.3-STABLE acpi and mpt problems?":
>> On Wednesday 16 June 2010 7:14:09 am Lystopad Olexandr wrote:
>>> Hi!
>>>
>>> I have FreeBSD 7.3-STABLE on Biostar 945GC-M4 motherboard.
>>> When I boot with custom kernel it fail to boot on ACPI. FreeBSD box
>>> do not respond to any key. But it successfully boots with button 2
>>> from boot menu (without acpi).
>>>
>>> Then I try to boot with GENERIC. Success! Ok, I try comment
>>> out one-by-one devices in GENERIC, rebuild and install kernel,
>>> and try to boot. My custom kernel boot fine until I comment
>>> out mpt device in kernel, but it successfully boots without
>>> acpi (button 2 on boot menu). I have no mpt devices in
>>> this box. When I insert "device mpt" back to the kernel it boots
>>> successfully.
>>>
>>> Why acpi depends on device mpt? Why this server do not boot without
>>> this device?
>> How does it fail to boot in the non-mpt case?  Does it hang, does it panic?  
>> If it hangs, can you break into DDB and capture the output of 'ps' and a stack 
>> trace?  (A serial console is probably useful for this.)
> 
> John, thank you very much for your answer.
> Sorry for delay.
> 
> My freebsd box fails to boot after detecting CPU and memory. It
> simply hang. I think this is too early to run ddb or somethig else.
> 
> Also, similar problem with this device I detect on two remote bsd
> servers in production. After insert mpt device into kernel, that
> servers begin boots fine.

Can you please produce _verbose_ dmesg for booting with acpi+mpt and no acpi, no
mpt?  And also, _verbose_ dmesg of acpi and !mpt.
You can capture the latter with serial console.
If you don't have it, try to get screenshots.


-- 
Andriy Gapon