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SubjectRE: 2.6.25-current-git hangs on boot unless CONFIG_CPU_IDLE=n -Apple
Date
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>-----Original Message-----
>From: linux-kernel-owner@vger.kernel.org
>[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of
>Carlos R. Mafra
>Sent: Friday, April 04, 2008 4:48 AM
>To: Ray Lee
>Cc: Pallipadi, Venkatesh; Rafael J. Wysocki; Linux Kernel
>Mailing List; Pallipadi@ogre.sisk.pl; Soeren Sonnenburg
>Subject: Re: 2.6.25-current-git hangs on boot unless
>CONFIG_CPU_IDLE=n -Apple
>
>On Thu 3.Apr'08 at 20:15:02 -0700, Ray Lee wrote:
>> On Thu, Apr 3, 2008 at 6:10 PM, Carlos R. Mafra
><crmafra2@gmail.com> wrote:
>> > On Thu 3.Apr'08 at 17:14:22 -0700, Pallipadi, Venkatesh wrote:
>> > > >The following report is on the current list of known
>regressions
>> > > >from 2.6.24. Please verify if the issue is still
>present in the
>> > > >mainline.
>> > > >
>> > > >
>> > > >Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10093
>> > > >Subject : 2.6.25-current-git hangs on boot
>> > > >unless CONFIG_CPU_IDLE=n - Apple
>> > > >Submitter : Soeren Sonnenburg <kernel@nn7.de>
>> > > >Date : 2008-02-23 18:55 (41 days old)
>> > > >References : http://lkml.org/lkml/2008/2/23/263
>> > > >
>> > > >http://marc.info/?l=linux-acpi&amp;m=120387537018467&amp;w=4
>> > > >Handled-By : Pallipadi, Venkatesh
><venkatesh.pallipadi@intel.com>
>> > > >
>> > >
>> > > Last comment I saw from Soeren says it does not really
>hang. It waits
>> > > for 5-10 seconds sometimes before continuing. We are
>still trying to
>> > > narrow this down with max_cstate etc..
>> >
>> > I should say that my laptop (Vaio) _hangs_ at boot (less
>than 10% of boots)
>> > and this is the last message I see:
>> >
>> > "ACPI: Processor [CPU1] (supports 8 throttling states)"
>> >
>> > and it stays there "forever" (more than 1 or 2 minutes at least).
>> >
>> > I am not using my laptop too much these days, and I thought this
>> > bug had been solved because it didn't hang for the last week (but
>> > I boot it once per day), however it hang last night (using some
>> > post 2.6.25-rc7 kernel)
>> >
>> > I have pictures of the screen while showing this last
>message at boot,
>> > should I post it somewhere or that is not necessary?.
>>
>> If the sysrq key still works when that happens, try to do a sysrq-t,
>> s, b to generate a trace, sync the filesystem, and reboot.
>If anything
>> made it to the logs, please post it.
>
>Sysrq keys don't work when it hangs, I have to push the power button.
>
>Another thing to notice is that when it happens, it usually happens
>more times in a row (like 3 times). And then it can take many boots to
>happen again.
>
>I've uploaded the picture where it hangs, it is in the very beginning
>of the boot process:
>
>http://www.ift.unesp.br/users/crmafra/dsc04673.jpg


Can you try the latest git and see whether this still is a problem?

Thanks,
Venki


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