From kde-commits  Wed Apr 30 23:13:22 2003
From: Chris Howells <howells () kde ! org>
Date: Wed, 30 Apr 2003 23:13:22 +0000
To: kde-commits
Subject: Re: kdebase/kdesktop/lock
X-MARC-Message: https://marc.info/?l=kde-commits&m=105174443731951

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Hi,

On Thursday 01 May 2003 00:03, Antonio Larrosa Jiménez wrote:
> Looks nice. Btw, how does this relate to the "DPMS-dependent" config option
> in SaverEngine (lockeng.cc)  ?

That option prevents the screensaver from starting if an app like a media 
player has disabled DPMS so that the screen doesn't go blank half way through 
the film.

This will SIGSTOP the screensaver when the screen has been blanked by DPMS -- 
if you've turned your monitor off, you probably don't want to have your CPU 
doing lots of processing as well :)

> Could the timer (the checks) be completely disabled when the user doesn't
> use DPMS ? (because he completely turned DPMS off in kcontrol)

Yes, that would probably be a good idea. IIRC KDE takes over handling DPMS 
from X, but I'll have to check that tomorrow to be sure *yawn*.

> Also, what happens if someone is using one of those screensavers that do
> calculations while you're not using the computer? (like SETI,
> protein-foldings, etc.) Would it be stopped when DPMS turn off the
> monitor? (Not that I care about that, I suppose it's better to make those
> real background processes instead of screensavers, but I thought I should
> point it just in case).

Hrm, interesting point. They would be a problem yes if they integrated with 
the KDE screensaver system, which I guess they don't. IIRC SETI just used to 
be a daemon that run in the background.

- -- 
Cheers, Chris Howells -- chris@chrishowells.co.uk, howells@kde.org
Web: http://chrishowells.co.uk, PGP ID: 33795A2C
KDE: http://www.koffice.org, http://printing.kde.org, http://usability.kde.org

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