From: Richard Hughes <hughsient@gmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH 0/2] PM / Sleep: Extended control of suspend/hibernate interfaces
Date: Mon, 31 Oct 2011 15:11:16 +0000 (UTC) [thread overview]
Message-ID: <loom.20111031T155558-924@post.gmane.org> (raw)
In-Reply-To: <20111017093401.21cd4461@notabene.brown>
NeilBrown <neilb <at> suse.de> writes:
> gnome-power-manager talks to upowerd over dbus to ask for a suspend.
Quite a few other desktops talk to upower, including XFCE, KDE and LXDE.
It's basically the only way on a modern desktop a user can put the
machine to sleep without becoming root.
> upowerd then runs /usr/sbin/pm-suspend.
> pm-suspend then runs all the script in /usr/lib/pm-utils/sleep.d/
> and the calls "do_suspend" which is defined in
> /usr/lib/pm-utils/pm-functions
>
> Ugghh.. That is a very deep stack that is doing things the "wrong"
> way.
> i.e. it is structured about request to suspend rather than requests to
> stay awake.
Erm, that's what it was designed to do. UPower has never had any feature
requests to manage "stay-awake" functionality as upower is pretty much a
mechanism daemon, rather than a policy daemon. Certainly just writing to
/sys if /usr/lib/pm-utils/pm-functions isn't installed would be a very
sane patch to suggest, given that pm-suspend in Fedora 16 basically
doesn't do anything anymore.
UPower does have signals that tell userspace when a suspend is about to
happen, and when the computer has been resumed, and this is done using
DBus.
I think it would be a shame to have Yet Another Daemon and Yet Another
Protocol just for managing this stuff, when upower already has DBus and
tons of client support. I think adding a tiny DBus interface on upower
to manage the stay-awake functionality would make things much less
complicated and give us a common desktop / embedded story.
Richard.
(please cc me in any replies, not subscribed)
next prev parent reply other threads:[~2011-10-31 15:15 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-13 19:45 Rafael J. Wysocki
2011-10-13 19:49 ` [RFC][PATCH 1/2] PM / Sleep: Add mechanism to disable suspend and hibernation Rafael J. Wysocki
2011-10-13 19:50 ` [RFC][PATCH 2/2] PM / Sleep: Introduce cooperative suspend/hibernate mode Rafael J. Wysocki
2011-10-13 22:58 ` John Stultz
2011-10-14 22:49 ` Rafael J. Wysocki
2011-10-15 0:04 ` John Stultz
2011-10-15 21:29 ` Rafael J. Wysocki
2011-10-17 16:48 ` John Stultz
2011-10-17 18:19 ` Alan Stern
2011-10-17 19:08 ` John Stultz
2011-10-17 20:07 ` Alan Stern
2011-10-17 20:34 ` John Stultz
2011-10-17 20:38 ` Rafael J. Wysocki
2011-10-17 21:20 ` John Stultz
2011-10-17 21:19 ` NeilBrown
2011-10-17 21:43 ` John Stultz
2011-10-17 23:06 ` NeilBrown
2011-10-17 23:14 ` NeilBrown
2011-10-17 21:13 ` Rafael J. Wysocki
2011-10-14 5:52 ` [RFC][PATCH 0/2] PM / Sleep: Extended control of suspend/hibernate interfaces NeilBrown
2011-10-14 16:00 ` Alan Stern
2011-10-14 21:07 ` NeilBrown
2011-10-15 18:34 ` Alan Stern
2011-10-15 21:43 ` NeilBrown
2011-10-15 22:10 ` Rafael J. Wysocki
2011-10-16 2:49 ` Alan Stern
2011-10-16 14:51 ` Alan Stern
2011-10-16 20:32 ` Rafael J. Wysocki
2011-10-17 15:33 ` Alan Stern
2011-10-17 21:10 ` Rafael J. Wysocki
2011-10-17 21:27 ` Rafael J. Wysocki
2011-10-18 17:30 ` Alan Stern
2011-10-16 22:34 ` NeilBrown
2011-10-17 14:45 ` Alan Stern
2011-10-17 22:49 ` NeilBrown
2011-10-17 23:47 ` John Stultz
2011-10-18 2:13 ` NeilBrown
2011-10-18 17:11 ` Alan Stern
2011-10-18 22:55 ` NeilBrown
2011-10-19 16:19 ` Alan Stern
2011-10-20 0:17 ` NeilBrown
2011-10-20 14:29 ` Alan Stern
2011-10-21 5:05 ` NeilBrown
2011-10-21 5:23 ` lsusd - The Linux SUSpend Daemon NeilBrown
2011-10-21 16:07 ` Alan Stern
2011-10-21 22:34 ` NeilBrown
2011-10-22 2:00 ` Alan Stern
2011-10-22 16:31 ` Alan Stern
2011-10-23 3:31 ` NeilBrown
2011-10-23 8:21 ` NeilBrown
2011-10-23 12:48 ` Rafael J. Wysocki
2011-10-23 23:04 ` NeilBrown
2011-10-23 16:17 ` Alan Stern
2011-10-21 20:10 ` david
2011-10-21 22:09 ` NeilBrown
2011-10-26 14:31 ` Jan Engelhardt
2011-10-27 4:34 ` NeilBrown
2011-10-31 15:11 ` Richard Hughes [this message]
2011-10-16 20:26 ` [RFC][PATCH 0/2] PM / Sleep: Extended control of suspend/hibernate interfaces Rafael J. Wysocki
2011-10-16 23:48 ` NeilBrown
2011-10-17 15:43 ` Alan Stern
2011-10-17 22:02 ` Rafael J. Wysocki
2011-10-17 23:36 ` NeilBrown
2011-10-22 22:07 ` Rafael J. Wysocki
2011-10-23 2:57 ` NeilBrown
2011-10-23 13:16 ` Rafael J. Wysocki
2011-10-23 23:44 ` NeilBrown
2011-10-24 10:23 ` Rafael J. Wysocki
2011-10-25 2:52 ` NeilBrown
2011-10-25 7:47 ` Valdis.Kletnieks
2011-10-25 8:35 ` Rafael J. Wysocki
2011-10-23 15:50 ` Alan Stern
2011-10-27 21:06 ` Rafael J. Wysocki
2011-10-28 0:02 ` NeilBrown
2011-10-28 8:27 ` Rafael J. Wysocki
2011-10-28 15:08 ` Alan Stern
2011-10-28 17:26 ` Rafael J. Wysocki
2011-10-31 19:55 ` Ming Lei
2011-10-31 21:15 ` NeilBrown
2011-10-31 21:23 ` Ming Lei
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