linux-kernel - Re: Resuming from hibernation on T61 with nvidia

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Message-ID: <4EC2BED2.3000707@linux.vnet.ibm.com>
Date:	Wed, 16 Nov 2011 01:04:42 +0530
From:	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
To:	dienet <dienet@...zta.fm>
CC:	linux-acpi@...r.kernel.org,
	Linux PM mailing list <linux-pm@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Resuming from hibernation on T61 with nvidia

On 11/16/2011 12:32 AM, dienet wrote:
> Hello
> 
> As far I can remember (since I have my ThinkPad T61), there is problem 
> with resuming from hibernation (suspend-to-disk) on this system. And I 
> know that there are lots of people with the same problem.
> I was checking lots of kernel versions but with no luck.
> 
> Was is the problem? In my T61 I have 01:00.0 VGA compatible controller: 
> nVidia Corporation G84M [Quadro NVS 140M] (rev a1) and I am using
> nvidia  drivers (also checked quite a few versions without any luck).
> Suspending  to disk is working without any problem. The problem is when
> I want to  resume. The resume process is stopping at some point (I think
> after the  pages are red) for about 60 seconds. After that time, the
> resume process  is continuing, and after few sec, I am back in X11.
> 
> I have motivation to fix it, but:
> 
> 1. How to trace it?
> 2. Is it possible to fix this? Maybe the fix should take place in
> nvidia  driver (nvidia.o), and that can not be done. But maybe the fix
> can be done  in kernel?
> 
> I want to notice that, if the fix will only work for me, then that is
> fine  with me.
> 
> I know that answer to 2. might be hard, so maybe some guide how to
> trace  the problem?
> 

Hi,

[Adding linux-pm and linux-kernel mailing lists to CC.]

You can try using the pm_test framework for debugging this, to a certain
extent. See Documentation/power/basic-pm-debugging.txt for details on how
to use it.

Also, if you could post any logs that indicate the problem, that would
be great!

Thanks,
Srivatsa S. Bhat
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