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Re: [PATCH] PM / Freezer: Freeze filesystems while freezing processes (v

To: "Rafael J. Wysocki" <rjw@xxxxxxx>
Subject: Re: [PATCH] PM / Freezer: Freeze filesystems while freezing processes (v2)
From: Christoph <cr2005@xxxxxxxxx>
Date: Mon, 26 Sep 2011 07:27:20 +0200
Cc: "Theodore Ts'o" <tytso@xxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Nigel Cunningham <nigel@xxxxxxxxxxxx>, Pavel Machek <pavel@xxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, Linux PM mailing list <linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx>, linux-ext4@xxxxxxxxxxxxxxx
In-reply-to: <201109260010.50649.rjw@xxxxxxx>
References: <4E1C70AD.1010101@xxxxxxxxx> <201109251532.20025.rjw@xxxxxxx> <4E7FA3C7.5050503@xxxxxxxxx> <201109260010.50649.rjw@xxxxxxx>
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20110818 Icedove/3.0.11
On 26.09.2011 00:10, Rafael J. Wysocki wrote:
> On Sunday, September 25, 2011, Christoph wrote:
>> On 25.09.2011 15:32, Rafael J. Wysocki wrote:
>>> On Sunday, September 25, 2011, Christoph wrote:
>>>> test results of the patch below:
>>>>
>>>> 1. real machine
>>>>
>>>> suspends fine but on wakeup, after loading image: hard reset. nvidia
>>>> gpu => disabled compitz  => wakeup worked two times.
>>>
>>> Hmm, so there's a separate bug related to NVidia I guess.
>>
>> Maybe.
>>
>> Just made another test: the machine (macbook) woke up, loaded image, thaw.
>> It got stuck at vt#1, displaying console with login. Cursor blinking, but
>> no (usb) keyboard or network enabled. Bricked?!!
>>
>>
>> On the other hand I've got another box with nvidia gpu:
>>
>> debian5 32bit
>> 2.6.38.2+ #3 SMP Fri Apr 1
>> nvidia 260.19.36
>>
>> It's up since I compiled the kernel: I use it twice a week and I kept it
>> freezed all the time. It was solid rock until today: hard reset on resume.
>> WTF? (I remember this version combo was stable on the macbook but the
>> kernel lacks a solid wireless driver).
> 
> If that's an x86_64 system, there is a known bug causing problems like
> this to happen.  There's a patch fixing it, but not conclusive:
> http://marc.info/?l=linux-kernel&m=131653513414314&w=2

very good. seems to fix resume, at least the 2 times I tested so far.

tx! :)

chris


> 
> Thanks,
> Rafael
> 
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