linux-kernel - RE: boot hangs with SMP, USB storage, and ACPI

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Message-ID: <9b9c8e900709120600n3ffa9b6fn1bd514672d2e9bc1@mail.gmail.com>
Date:	Wed, 12 Sep 2007 15:00:41 +0200
From:	"tx tox" <t0mc4t1@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: RE: boot hangs with SMP, USB storage, and ACPI

On 12 Lip 2006, 00:41, Eric Cooper <e...@....edu> wrote:
> When I try toboota 2.6.17 kernel compiled forSMP(hyperthreading),
> it hangs early in thebootsequence (after printing "FreeingSMP
> alternatives").  The issue seems to be an interaction between a
> USB-storage device (an empty flash card reader built into the
> monitor) andACPI.
>
> It boots fine if I do any one of these:
>   - physically disconnect theUSBdevice
>   - disableUSBsupport in the BIOS
>   -bootwithacpi=ht
> but none of these is completely satisfactory.
>
> I'll happily supply more details, run tests, etc. if anyone is
> interested in looking at this.  Thanks, and please CC me if you
> respond.
>
> --
> Eric Cooper             e c c @ c m u . e d u


I have exactly the same problem
This happens whenever i boot machine with reader on
or usbstick plugged in.
It happens with newer kernels as well.
It is little bit annoying to reset machine just because i forgot
to switch off the printer which has card reader equipped ;)
some goofing with printks suggests ACPI as a place whenre it freezes.
But i got no proof for that.
Any suggestions are welcome.

Regards
/TomCat
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