Re: lockup during probing because of a memory stick


On Oct 30, 2011, at 6:47 PM, deeptech71@gmail.com wrote:

> On Sun, Oct 30, 2011 at 9:27 PM, Hans Petter Selasky =
<hselasky@c2i.net> wrote:
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>> On Saturday 29 October 2011 23:26:29 deeptech71@gmail.com wrote:
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>>> I don't recall this case happening some time ago. But now, this
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>>> happens with and without the NEW_PCIB option. I mention this because
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>>> ``acpi0: <A M I OEMXSDT> on motherboard'' is shortly followed by
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>>> ``acpi0: reservation of 0, a0000 (3) failed'', whatever that means.
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>> ACPI involves some USB BIOS code most likely which is causing the =
crash. I
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>> think this is maybe not a FreeBSD issue, but if you can binary search =
the
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>> revisions to find exactly what commit broke your system, them I can =
look
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>> further at your issue.
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> Actually, I've just tested a pre-compiled 7.3-RELEASE GENERIC kernel,
> and the lockup also occurs there.
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>> Have you tried to turn off USB legacy support in the BIOS?
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> Hmm. Interesting, only a combination of the following result in the =
lockup:
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> - Legacy USB Support: Auto (enable if and only if a USB device is
> connected) or Enabled,
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> - USB 2.0 Controller: Enabled,
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> - USB 2.0 Controller Mode: HiSpeed,
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> - the memory stick is plugged in when the computer starts, and
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> - the memory stick is plugged in when FreeBSD boots.
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> Note that, to reproduce the lockup, it is not sufficient to just have
> the said BIOS settings (Legacy USB Support: Enabled, etc.), it is also
> required that the mutherboard recognize the memory stick when the
> computer starts, and to have the memory stick connected when FreeBSD
> boots. (If I disable 2.0 support, or set the speed to FullSpeed, or
> disable legacy support, or do not have the stick plugged in when the
> computer starts, or do not have the stick plugged in when FreeBSD
> boots, then the lockup does not occur.)
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> But Windows XP does not produce any lockups in the case where FreeBSD
> does. Furthermore, in all cases, the memory stick is usable from
> FreeBSD if FreeBSD boots successfully. So why should I expect FreeBSD
> to lock up?


	Vendor hacks and limited testing on other OSes is the most =
likely cause, if it's not a bug within FreeBSD. Just to narrow things =
down a bit...
1. Are there are BIOS updates for your motherboard?
2. Do you have ACPI 2.0 support enabled in the BIOS (I was reminded of =
this because some ASUS MBs default this setting to off -- which may or =
may not cause problems with FreeBSD)?
-Garrett
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