Re: Uhhuh. NMI received for unknown reason 2d on CPU 0.

George Spelvin

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Apr 12, 2011, 11:20:01 PM4/12/11

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This problem which I thought was fixed by commit 7d44ec193d, appears to be
still very much present in 2.6.39-rc3:

Apr 12 22:16:00 horizon kernel: Uhhuh. NMI received for unknown reason 3d on CPU 0.
Apr 12 22:16:00 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:16:00 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:17:22 horizon kernel: Uhhuh. NMI received for unknown reason 2d on CPU 0.
Apr 12 22:17:22 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:17:22 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:21:17 horizon kernel: Uhhuh. NMI received for unknown reason 2d on CPU 0.
Apr 12 22:21:17 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:21:17 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:25:02 horizon kernel: Uhhuh. NMI received for unknown reason 2d on CPU 0.
Apr 12 22:25:02 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:25:02 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:28:24 horizon kernel: Uhhuh. NMI received for unknown reason 3d on CPU 0.
Apr 12 22:28:24 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:28:24 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:31:28 horizon kernel: Uhhuh. NMI received for unknown reason 2d on CPU 0.
Apr 12 22:31:28 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:31:28 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:34:20 horizon kernel: Uhhuh. NMI received for unknown reason 3d on CPU 0.
Apr 12 22:34:20 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:34:20 horizon kernel: Dazed and confused, but trying to continue
Apr 12 22:37:01 horizon kernel: Uhhuh. NMI received for unknown reason 3d on CPU 0.
Apr 12 22:37:01 horizon kernel: Do you have a strange power saving mode enabled?
Apr 12 22:37:01 horizon kernel: Dazed and confused, but trying to continue

Same system as before: 1.6 GHz P4, ASUS P4B266LA, Intel 845 chipset.

I suspect commit 242214f9c1 wasn't quite as effective as hoped.
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Cyrill Gorcunov

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Apr 13, 2011, 1:10:02 AM4/13/11

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On Wed, Apr 13, 2011 at 8:34 AM, Cyrill Gorcunov <gorc...@gmail.com> wrote:
> There is a patch fromDon we are testing now, i will resend it in a couple of
> hours.
>

George, mind to give these patches a shot please? (Sorry for sending
it as attachment).

don-apic-nmi-unmask-fix.patch

George Spelvin

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Apr 14, 2011, 11:20:02 AM4/14/11

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> George, mind to give these patches a shot please? (Sorry for sending
> it as attachment).

It ran overnight with no problems. (Well, I'm having a problem with udev
using 100% of CPU, but that appears to be unrelated.)

Thank you very much!

Acked-By: George Spelvin <li...@horizon.com>

Cyrill Gorcunov

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Apr 14, 2011, 11:30:02 AM4/14/11

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On 04/14/2011 07:16 PM, George Spelvin wrote:
>> George, mind to give these patches a shot please? (Sorry for sending
>> it as attachment).
>
> It ran overnight with no problems. (Well, I'm having a problem with udev
> using 100% of CPU, but that appears to be unrelated.)
>
> Thank you very much!
>
> Acked-By: George Spelvin <li...@horizon.com>

Thanks a lot for testing! Kudo goes to Don :)

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Cyrill