linux-kernel - Re: Suspend to ram with 2.6 kernels

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Date:	Sat, 9 Sep 2006 21:16:54 +0200
From:	Pavel Machek <pavel@....cz>
To:	Eric Sandall <eric@...dall.us>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Suspend to ram with 2.6 kernels

Hi!

> >> I am having a problem with suspend-to-ram (have been for a while, but
> >> suspend-to-disk has been working fine for me, so I never really bothered
> >> to report it until now).
> >>
> >> Suspend-to-disk and resuming from it works fine (using `echo -n disk >
> >> /sys/power/state`).
> >>
> >> Suspend-to-ram works fine (using `echo -n mem > /sys/power/state`), but
> >> resuming does not. When I lift up the lid of my laptop (Dell Inspiron
> >> 5100) it seems to power back up (the power light changes from blinking
> >> to solid), but my screen stays blank and keys such as capslock do not
> >> toggle their LED.
> > 
> > See suspend.sf.net, use provided s2ram program.
> 
> Thanks! The key (mentioned in the documentation there) is to disable
> framebuffer (ATI video card). First time I've had suspend-to-RAM working
> on this machine. ;)

I'm glad it works.

> Though you may want to rename the /usr/sbin/suspend command to something
> other than 'suspend' as, at least for me, it is a shell command which
> puts the current shell in the background.
> 
> The HOWTO *does* mention:
> [Warning: some shells have "suspend" built in command, so specifing
> exact path like ./suspend is more important than usual.]
> 
> Though I still believe it'd be a good idea to pick a non-conflicting name.

We thought about it, but was too lazy to rename, and suspend should
probably be called from script/powersaved/something, anyway.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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