6.4 RC1 locks up solid on first reboot

Jo Rhett jrhett at netconsonance.com
Fri Oct 24 11:48:22 PDT 2008

So I booted up by CD and used Fixit mode to switch the system to boot  
via serial (keyboard detached), but this gathered me even less.

/boot.config: -Dh
Consoles: internal video/keyboard  serial port
BIOS drive A: is disk0
BIOS drive C: is disk1
BIOS drive D: is disk2
BIOS 639kB/4062144kB available memory

FreeBSD/i386 bootstrap loader, Revision 1.1
(root at dessler.cse.b

Plugging back in the monitor after lockup showed only a single char  
(root at dessler.cse.bu

On Oct 24, 2008, at 11:41 AM, Jo Rhett wrote:
> On Oct 23, 2008, at 1:08 PM, John Baldwin wrote:
>>> Has anyone filed a PR on this problem, or contacted John Baldwin?
>> Yes, but debugging these hangs is very non-trivial.  It likely  
>> involves
>> disassembling the BIOS and trying to see where it can get stuck in  
>> a loop.
> John, is there anything I can do to provide you with more useful  
> information about this problem?
> The board is a Tyan S2720
> 2 2.66G Intel Processors
> 4 Gigabytes of RAM
> 2 36G ST336607LC Cheetah drives
> While playing around randomly I found something interesting.  If the  
> keyboard is attached while booting, you get the problem I reported  
> before:
>> Loading /boot/defaults/loader.con
>> \
> But if you boot without a keyboard it gets beyond that point and then
> pci0: <ACPI PCI bus> on pci0b
> Fatal trap 12; page fault while in kernel mode
> cpuid = 0; apic id = 00
> ...a bunch of other stuff.  I can't capture this because I can't  
> type fast enough.  Also noteworthy, I can't hit "6" to set console  
> to comconsole so that I could cut/paste this.  It really seems like  
> there are major problems around the keyboard.  (and no such problems  
> with 6.3)
> -- 
> Jo Rhett
> Net Consonance : consonant endings by net philanthropy, open source  
> and other randomness
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Jo Rhett
Net Consonance : consonant endings by net philanthropy, open source  
and other randomness

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