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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: markus@gutschke.com
Cc: Zhang Rui <rui.zhang@intel.com>, Pavel Machek <pavel@ucw.cz>,
	linux-kernel@vger.kernel.org,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	Mika Westerberg <mika.westerberg@linux.intel.com>
Subject: Re: 3.16-rcX crashes on resume from Suspend-To-RAM
Date: Wed, 06 Aug 2014 20:56:21 +0200	[thread overview]
Message-ID: <3611647.fAl6g4h0i8@vostro.rjw.lan> (raw)
In-Reply-To: <CALGCz1pSpzDVb8sQx=QFKjdR4fi566h42p2nRkFx+RXairbgFQ@mail.gmail.com>

On Wednesday, August 06, 2014 11:31:07 AM Markus Gutschke wrote:
> I tried removing snd_hda_intel, but it didn't make any difference.
> 
> I then followed your instructions to turn on tracing, but I am more
> puzzled than I was before. The crash reliably happens, every time I
> suspend/resume without first having tracing turned on. But as soon as
> I enter "echo devices >/sys/power/pm_test" to enable tracing things
> change. Upon suspending, the machine now happily resumes itself again
> a few seconds later. No crash whatsoever.
> 
> Is this the expected behavior? Anything else you want me to do?

Yes, it is.  This means that suspending/resuming devices works correctly.

Please try

# echo platform > /sys/power/pm_test

and see if that triggers the crash.

If it doesn't, please try

# echo processors > /sys/power/pm_test

and if that doesn't trigger the crash,

# echo core > /sys/power/pm_test

(this is described in Documentation/power/basic-pm-debugging.txt in the kernel
source tree, BTW).

Rafael


  reply	other threads:[~2014-08-06 18:37 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-16  1:51 Markus Gutschke
2014-07-17  6:50 ` Markus Gutschke
2014-07-17  8:58   ` Zhang Rui
2014-07-17 17:27     ` Markus Gutschke
2014-07-22  0:22       ` Zhang Rui
2014-07-26 15:52         ` Markus Gutschke
2014-08-04 14:16           ` Pavel Machek
2014-08-04 16:06             ` Markus Gutschke
2014-08-05  1:30               ` Rafael J. Wysocki
2014-08-05  9:58                 ` 3.16 crashes on resume from Suspend-To-disk Janek Kozicki
2014-08-05 17:07                   ` Janek Kozicki
2014-08-05 23:15                     ` Rafael J. Wysocki
2014-08-07  9:34                       ` Takashi Iwai
2014-08-08 16:25                         ` 3.16 crashes on resume from Suspend-To-disk, Intel pci_bus problem? Janek Kozicki
2014-08-08 16:29                           ` Janek Kozicki
2014-08-09  8:59                           ` Takashi Iwai
2014-08-09  9:56                             ` Janek Kozicki
2014-08-09 12:13                               ` Janek Kozicki
2014-08-13  9:43                       ` 3.16 crashes on resume from Suspend-To-disk Janek Kozicki
2014-08-06 12:25                   ` Pavel Machek
2014-08-07 17:54                     ` Janek Kozicki
2014-08-05  2:44               ` 3.16-rcX crashes on resume from Suspend-To-RAM Zhang Rui
2014-08-06 18:31                 ` Markus Gutschke
2014-08-06 18:56                   ` Rafael J. Wysocki [this message]
2014-08-06 19:03                     ` Markus Gutschke
2014-08-09 10:14                       ` Markus Gutschke
2014-08-12  8:26                         ` Zhang Rui
2014-08-12 16:11                           ` Markus Gutschke
2014-08-15 17:17                             ` Markus Gutschke
2014-08-16  0:46                               ` Rafael J. Wysocki
2014-08-16  9:54                                 ` Markus Gutschke
2014-08-18  1:11                                 ` Zhang Rui

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