linux-kernel - Re: [BUG] long freezes on thinkpad t60

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Date:	Fri, 25 May 2007 08:58:58 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Kok, Auke" <auke-jan.h.kok@...el.com>
Cc:	Henrique de Moraes Holschuh <hmh@....eng.br>,
	Miklos Szeredi <miklos@...redi.hu>,
	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [BUG] long freezes on thinkpad t60


* Kok, Auke <auke-jan.h.kok@...el.com> wrote:

> Henrique de Moraes Holschuh wrote:
> >On Thu, 24 May 2007, Miklos Szeredi wrote:
> >>Tried nmi_watchdog=1, but then the machine locks up hard shortly after
> >>boot.
> >
> >NMIs in some thinkpads are bad trouble, they lock up the blasted IBM/Lenovo
> >SMBIOS if they happen to hit it while it is servicing a SMI, and thinkpads
> >do SMIs like crazy.
> 
> there's also a L1 ASPM issue with the e1000 chipset in the way (for 
> T60/X60 only). Make sure you are using 2.6.21 or newer. See netdev 
> archives for more on that.

Miklos is using latest -git and he has nmi_watchdog disabled - still the 
long pauses persist. (i've never seen that on my t60)

	Ingo
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