linux-kernel - Re: 2.6.27.9 - Resuming from hibernate locks after "CPU1 is down"

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Date:	Thu, 25 Dec 2008 20:12:41 +0100
From:	Paul Rolland <rol@...917.net>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	Paul Rolland <rol@...917.net>
Subject: Re: 2.6.27.9 - Resuming from hibernate locks after "CPU1 is down"

Self replying, just to add that 2.6.28 has the same behavior.

Regards,
Paul

On Thu, 25 Dec 2008 23:09:34 +0100
Paul Rolland <rol@...917.net> wrote:

> Hello,
> 
> I'm trying to have suspend to disk and suspend to RAM work on my machine
> (Dell Inspiron 6400, 2Go RAM, with an Intel Mobile 945GM/GMS, 943/940GM
> L Express Integrated Graphics Controller.
> 
> To suspend, I'm using the "echo mem | disk > /sys/power/state" command.
> 
> As of now, using suspend to RAM allow the machine to suspend, and resume
> is nearly OK except the video is not restored, and the screen stays black
> (but keyboard is Ok, I can launch any command I want, so I can restart).
> 
> When suspending to disk, suspend is Ok with :
> echo -n 2097152000 > /sys/power/image_size ;
> echo -n disk > /sys/power/state
> and resuming detects the image in the swap partition. So, I have on the
> console, when I add "no_console_suspend" on the boot command line :
> PM: loading image data pages...
> PM: read xxxxx kbytes in y.zz seconds
> ...
> [stuff about scsi/sda]
> Disabling non-boot CPUs
> CPU1 is now offlone
> SMP alternatives: switching to UP code
> CPU1 is down
> 
> and then, nothing :( machine is dead frozen. CAPS Lock doesn't toggle the
> keyboard LED anymore, I need to manually power off and power on the
> machine.
> 
> I must add that these are my first attempts. So, this is not to be
> considered a regression.
> 
> Is there anything else I can do to try to debug the resume ?
> 
> Regards,
> Paul
> 


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