Regression 7.0R -> 7-stable?

Jeremy Chadwick koitsu at
Mon Aug 25 07:53:32 UTC 2008

On Mon, Aug 25, 2008 at 09:49:23AM +0200, Gerrit Kühn wrote:
> On Sat, 23 Aug 2008 07:50:09 -0400 John Baldwin <jhb at> wrote
> about Re: Regression 7.0R -> 7-stable?:
> JB> > XL> Could you please try disabling ACPI and boot?  Additionally a
> JB> > XL> 'boot - v' may reveal some useful information as well.  Just
> JB> > XL> some random thoughts.
> JB> > Disabling ACPI does not help, either (forgot to mention that
> JB> > earlier, sorry). I will post a boot -v log as soon as I have a
> JB> > working 7.0R on the system again.
> JB> What about disabling apic?  Also, are you using a serial console?  If
> JB> so, can you put DDB in your kernel and when it hangs break into ddb
> JB> and do a 'ps' and capture the output.
> apic, acpi, don't confuse me. :-)

In layman's terms:

APIC: a chip that helps interrupt routing -- addresses the historic
problem with x86 PCs only having 16 IRQs (extends this to 256)

ACPI: system capabilities interface -- defines different aspects of your
computer, and ties different pieces together.  Also acts as an interface
to power-related features often used on laptops (not to be confused with
S1/S3 suspend states)


| Jeremy Chadwick                                jdc at |
| Parodius Networking              |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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