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Date:	Mon, 03 Nov 2008 22:51:43 +0100
From:	Daniel Smolik <marvin@...atex.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org,
	stable@...nel.org, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [Bugme-new] [Bug 11886] New: without serial console system doesn't
 poweroff

Andrew Morton napsal(a):
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
> 
> On Wed, 29 Oct 2008 04:06:11 -0700 (PDT)
> bugme-daemon@...zilla.kernel.org wrote:
> 
>> http://bugzilla.kernel.org/show_bug.cgi?id=11886
>>
>>            Summary: without serial console system doesn't  poweroff
>>            Product: Power Management
>>            Version: 2.5
>>      KernelVersion: 2.6.27.4
>>           Platform: All
>>         OS/Version: Linux
>>               Tree: Mainline
>>             Status: NEW
>>           Severity: normal
>>           Priority: P1
>>          Component: Other
>>         AssignedTo: power-management_other@...nel-bugs.osdl.org
>>         ReportedBy: marvin@...atex.cz
>>
>>
>> Latest working kernel version:
>> Earliest failing kernel version:2.6.27.2
>> Distribution: Debian Etch
>> Hardware Environment: Supermiro C2SBC-Q  Dual Core Intel Cpu 1G RAM
>> Software Environment: Debian Etch
>> Problem Description: If I does't add serial console to kernel command line
>> system doesn't poweroff. Linux hangs there:
>>
>> e1000e 0000:0d:00.0: PCI INT A disabled
>> e1000e 0000:00:19.0: PCI INT A disabled
>> ACPI: Preparing to enter system sleep state S5
>> Disabling non-boot CPUs ...
>>
>> If I disable in kernel config Suspend to Ram and Hibernate all works without
>> console. But with Suspend and hibernate enabled and serial console  added to
>> kernel cmd line all works too:
>>
>> e1000e 0000:0d:00.0: PCI INT A disabled
>> e1000e 0000:00:19.0: PCI INT A disabled
>> ACPI: Preparing to enter system sleep state S5
>> Disabling non-boot CPUs ...
>> CPU 1 is now offline
>> SMP alternatives: switching to UP code
>> CPU1 is down
>> Power down.
>> acpi_power_off called
>>
>> Steps to reproduce:
>> Compile kernel with attached config and try poweroff without serial console.
>>
> 
> OK, this is weird.
> 
> But the good news is that there is a very small number of commits
> between 2.6.27.2 and 2.6.27.4.
> 
> ftp://ftp.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.3
> ftp://ftp.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.4
> 
> I'd be looking at these:
> 
> commit 3b987ac961486373f91191b14291b331fa546072
> Author: Rafael J. Wysocki <rjw@...k.pl>
> Date:   Sat Sep 6 13:13:01 2008 +0200
> 
>     ACPI suspend: Always use the 32-bit waking vector
>     
>     commit a6629105dd03d370fcb31e97bddf223fa4bb651e upstream.
> 
> 
> commit 66036f5862883fcc9f7ff8550685a5a3de1a57e4
> Author: Rafael J. Wysocki <rjw@...k.pl>
> Date:   Sat Oct 4 00:05:05 2008 +0200
> 
>     ACPI Suspend: Enable ACPI during resume if SCI_EN is not set
>     
>     commit d0c71fe7ebc180f1b7bc7da1d39a07fc19eec768 upstream.
> 
> 
> 
> presumably 2.6.28-rc3 is also broken?
I don't know I can test it on Thu. But may be may fault or misunderstanding fist kernel which I test is 2.27.2. I don't 
test any kernel before. I don't know if 2.6.26 works.

			Dan




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