Supermicro X7DBR-8+ hang at boot

[Guy Helmer]

John Baldwin wrote:
> On Tuesday 23 January 2007 01:17:57 pm Guy Helmer wrote:
>   
>> Jack Vogel wrote:
>>     
>>> On 1/23/07, Guy Helmer <ghelmer at palisadesys.com> wrote:
>>>       
>>>> Using FreeBSD 6.2, I'm having trouble with the Supermicro X7DBR-8+
>>>> motherboard (dual Xeon 5130 CPUs on the Blackford chipset -
>>>> http://www.supermicro.com/products/motherboard/Xeon1333/5000P/X7DBR-8+.cfm) 
>>>>
>>>> hanging after printing the "Waiting 5 seconds for SCSI devices to
>>>> settle" message.  The hang doesn't always happen - sometimes we have to
>>>> go through several reboot cycles for it to happen - but sometimes it
>>>> happens with every reboot.  For those who would suggest that this
>>>> happens because I'm using Seagate drives, it happens even if we totally
>>>> remove the SCSI drive (but leave the aic7902 SCSI interfaces enabled)
>>>> and boot from a SATA disk.  Using FreeBSD 6.1, the Intel gigabit
>>>> ethernet NICs aren't found but the hang doesn't occur.
>>>>         
>>> ...
>>> If that isnt it, I would suggest installing using ACPI disabled or 
>>> SAFE if
>>> needed, and then tweak the kernel after.
>>>       
>> hint.apic.0.disabled=1 helped - it hasn't hung yet in several boot 
>> cycles.  New dmesg is attached below in case it helps anyone see a 
>> better fix than disabling the APICs.
>>     
>
> So you got an interrupt storm on IRQ 18 when ahd0 tried to probe and ahd0 got
> interrupt timeouts.  This indicates that ahd0 really lives on IRQ 18, not IRQ
> 30.  Your BIOS is likely busted since ACPI hardcodes these sort of IRQs.
>
> You can override the BIOS by doing:
>
> set hw.pci5.2.INTA.irq=18
>
> in the loader (or adding a line to loader.conf) and seeing if that fixes the
> boot with APIC enabled.
>
>   
I'm trying to resolve what looks like a similar problem with an IBM 
Blade Server unit.  I'm reviewing my previous emails on this subject 
with the verbose boot messages to try to learn what lead you to 
determine the correct interrupt would be 18, but I can't seem to figure 
out what data leads to this conclusion.  Any hints?

Thanks,
Guy