linux-kernel - Re: Lenovo S12 2.6.36-rc7 lockup

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Date:	Wed, 13 Oct 2010 10:13:35 +0100
From:	Chris Vine <chris@...ne.freeserve.co.uk>
To:	sam <sam.tygier@....manchester.ac.uk>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Lenovo S12 2.6.36-rc7 lockup

On Tue, 12 Oct 2010 23:22:26 +0100
sam <sam.tygier@....manchester.ac.uk> wrote:
> i have seen similar issue while running with older kernels (2.6.32)
> on a S12 (intel GPU version). there is an ubuntu bug
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/643822
> 
> the "nolapic_timer" boot flag fixes it for me.

Interesting, yes, the 'nolapic_timer' option fixes it on this netbook,
but that seems a bit sub-optimal as it will presumably force use of i/o
apic. Whether that makes much difference in practice I don't know: the
netbook has a single Atom processor which does hyperthreading to appear
as two.

kernel 2.6.36-rc is the first kernel to trigger this on this particular
netbook.

Chris

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