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Message-ID: <7b69d1470701250803q27d742a9o3d04a710d61f3e60@mail.gmail.com>
Date: Thu, 25 Jan 2007 10:03:05 -0600
From: "Scott Preece" <sepreece@gmail.com>
To: "Alessandro Di Marco" <dmr@gmx.it>
Subject: Re: [ANNOUNCE] System Inactivity Monitor v1.0
Cc: 7eggert@gmx.de, "Pavel Machek" <pavel@ucw.cz>,
       linux-kernel@vger.kernel.org, vojtech@suse.cz
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On 1/25/07, Alessandro Di Marco <dmr@gmx.it> wrote:
> "Scott Preece" <sepreece@gmail.com> writes:
>
>    On 1/25/07, Bodo Eggert <7eggert@gmx.de> wrote:
>    > Imagine one computer serving two users. Two monitors, two keyboards ...
>    ---
>
>    Good point! Of late I've been working on single-user systems, so it
>    was not at the front of my brain, despite years of building and using
>    multi-user systems.
>
>    It's a point that multi-user systems have struggled with forever (when
>    somebody inserts a CR in the drive mounted in the system box, which user do
>    you pop up a media player for?).
>
> sed s/user X's screensaver/suspend to disk/g <<EOF
>
>    I tend to think it's not a kernel-vs-user-space issue, though. To
>    solve it you need, somewhere, a notion of a "user session" and you
>    need some way to separate system-level issues (like low-battery) from
>    user-level issues (like activiating user X's screensaver).
>
> EOF
>
> Are you sure?
---

Well, a screensaver is associated with a particular user (and screen),
but suspend-to-disk is a system-wide activity that would affect all
the users. So you need to be able to separate those notions in
deciding what actions to take.

scott
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