Re: Linux 2.6.14 ehci-hcd hangs machine

From: Borislav Petkov
Date: Wed Nov 02 2005 - 08:33:23 EST


On Tue, Nov 01, 2005 at 10:18:04AM -0800, David Brownell wrote:
> On Tuesday 01 November 2005 3:23 am, Borislav Petkov wrote:
> > Yeah, the symptoms are really weird. Let me rehash the whole history:
> > First, we did some testing with 2.6.14-rc4, _with_ the patch and the
> > 'handoff' cmd option and it worked. Then, several boots later, I noticed
> > that it started hanging itself again at the same position not while rebooting
> > but at _initial_ boot in the morning. ...
>
> So you're saying your hardware doesn't act consistently.
> Is there a BIOS update you can try? The failure sure seems
> to be board-specific.
Just did a BIOS update - the 2.6.14 git version from yesterday booted
just fine.
>
>
> > ... 2.6.13, in contrast, boots just fine. Hope
> > that helps,
>
> Well that's news, and not mentioned in the bug report; in fact, you
> said explicitly that it _never_ worked on earlier kernels (see your
> comment #2).
Ups, my bad, i got kinda confused by the formulation "most recent kernel
where..", sorry.

> This means you could use "git bisect" to point a finger at a patch that,
> if it doesn't actually cause the problem, at least surfaces a latent bug
> in other code. Could you please try that?
>
> I'm starting to suspect some IRQ setup problem here; those are classically
> issues in ACPI code, even when the breakage shows only with USB.
This is superfluous, I guess, now that 2.6.14 boots.

Thanks for your help.

Regards,
Boris.





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