From: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: pm list <linux-pm@lists.linux-foundation.org>,
Kernel Testers List <kernel-testers@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
Stefan Seyfried <stefan.seyfried@googlemail.com>
Subject: Re: 2.6.32-rc1: various BUGs on resume from hibernation
Date: Tue, 06 Oct 2009 09:58:48 +0100 [thread overview]
Message-ID: <4ACB06C8.9030209@tuffmail.co.uk> (raw)
In-Reply-To: <200910060048.41615.rjw@sisk.pl>
Rafael J. Wysocki wrote:
> On Monday 05 October 2009, Alan Jenkins wrote:
>
>> Alan Jenkins wrote:
>>
>>> Stefan Seyfried wrote:
>>>
>>>> On Sun, 4 Oct 2009 22:47:43 +0200
>>>> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
>>>>
>>>>> On Sunday 04 October 2009, Alan Jenkins wrote:
>>>>>
>>>>>> Alan Jenkins wrote:
>>>>>>
>>>>>>> I'm seeing a variety of BUGs on my EeePC 701 after hibernation.
>>>>>>> Sometimes they cause a hang during resume; sometimes they happen
>>>>>>> just after resume. It doesn't happen all the time either - I've
>>>>>>> just hibernated three times in a row with no problems. It's most
>>>>>>> perplexing.
>>>>>>>
>>>>> As I already asked in the Bugzilla, can you verify that this is
>>>>> reproducible without KMS?
>>>>>
>>> No. I couldn't reproduce it without KMS. Then I re-enabled KMS,
>>> hibernated a couple of times, and had another resume hang (different
>>> again - this time in the freezer).
>>>
>>>
>> Perhaps this GEM backtrace is more relevant than the others, or perhaps
>> not. I closed the lid during resume from hibernation; the screen stayed
>> black when I re-opened it, but syslogd recorded the following. (Again,
>> I've done the exact thing before and often nothing unusual happens) -
>>
>
> OK, let's assume it's related to KMS, then.
>
> 1. Do we already have a Bugzilla entry for it?
> 2. Did it work with 2.6.31 (and with KMS)?
>
I thought so, but my recollection is hazy. I didn't test it for very
long if I did. I've tried it now and 2.6.31 behaves pretty similarly.
Sorry for ringing the regression bell.
Firstly the _hibernation_ process hung (after a couple of suspend-to-ram
cycles).
No text on the console (despite using s2disk). It echoed keypresses and
responds to SysRq keys. No messages from lockdep or the hung task
detector (after waiting 5 minutes). SysRq-P said we're in the idle
loop; SysRq-T said both events/0 and hald-addon-input were runnable.
Then suspend-to-ram hung (following a hibernation cycle). This time it
showed the contents of vt1, but didn't appear to respond to anything
short of SysRq+B.
> 3. Are you aware of http://marc.info/?l=linux-kernel&m=125452324520623&w=4 ?
>
> Thanks,
> Rafael
>
I guess there's no connection. That issue seems to be about generally
flickery screens. I've seen a few rare flickers that might be related.
But in general nothing bad happens until I try to suspend, and the
badness is in the form of random crashes or hangs.
Also that bug is confirmed to be a regression, and my issue isn't :-).
Many thanks
Alan
prev parent reply other threads:[~2009-10-06 8:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4AC8B4A8.3050601@tuffmail.co.uk>
2009-10-04 17:03 ` 2.6.32-rc1: various BUGs on resume from hibernation Alan Jenkins
2009-10-04 20:47 ` Rafael J. Wysocki
2009-10-05 7:53 ` Stefan Seyfried
2009-10-05 8:08 ` Alan Jenkins
2009-10-05 8:10 ` Alan Jenkins
2009-10-05 20:02 ` Alan Jenkins
2009-10-05 20:59 ` Alan Jenkins
2009-10-05 22:48 ` Rafael J. Wysocki
2009-10-06 0:06 ` Rafael J. Wysocki
2009-10-06 8:58 ` Alan Jenkins [this message]
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