Re: USB regression (and other failures) in 2.6.2[45]*

[Andrew Buehler]

(Note: I consider it blatantly incorrect to send a reply both to a
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see the message otherwise, but in this case I am doing so anyway because
I see no way to avoid it and still make sure all relevant people receive
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On 2/16/2008 10:20 AM, Alan Stern wrote:

> On Sat, 16 Feb 2008, Oliver Pinter wrote:
>
> > On 2/15/08, Andrew Buehler <abuehler.kernel@xxxxxxxxx> wrote:
> > > In my workplace, I use a customized version of Novell's ZENworks
> > > imaging boot CD, which is based off of Linux. I have one
> > > particular model of laptop - the IBM/Lenovo R61 - on which three
> > > different things fail completely in current kernels (tested with
> > > 2.6.24.2 and 2.6.25-rc1): USB, AHCI (and thus access to the SATA
> > > drive), and networking. As a consequence of all three failing in
> > > parallel, I have no practical way to get logs and other
> > > information off of the machine to help with tracking down the
> > > bugs.
>
> ...
>
> To make a long story short, the USB symptoms you describe indicate a
> problem with interrupt routing.  This could well explain the other
> difficulties too.  There are various kernel parameters you can try
> putting on the boot command line to work around it:  acpi=noirq or
> acpi=off or pci=noacpi or a few others.

I have now tried all three of these, with no apparent effect; the USB
drive is still not detected when plugged in after boot. A naive search
on Google provides no indication of other possible parameters to try;
the only list I have found of ACPI-related kernel parameters includes no
others which seem likely to be helpful without more knowledge of the
specifics of the situation (and the subsystem) than I have.

What would the next step be?

--
   Andrew Buehler
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