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

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Message-ID: <46560E04.2090500@intel.com>
Date:	Thu, 24 May 2007 15:13:24 -0700
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	Henrique de Moraes Holschuh <hmh@....eng.br>
CC:	Miklos Szeredi <miklos@...redi.hu>, linux-kernel@...r.kernel.org,
	mingo@...e.hu, linux-acpi@...r.kernel.org
Subject: Re: [BUG] long freezes on thinkpad t60

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.

Auke
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