Bug 140639

Summary: Screensaver doesn't start if power management is off
Product: [Unmaintained] kdesktop Reporter: Michael Satterwhite <michael>
Component: generalAssignee: David Faure <faure>
Status: CLOSED DUPLICATE    
Severity: normal CC: finex, rm, v_gkanis
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Michael Satterwhite 2007-01-26 04:16:13 UTC
Version:            (using KDE KDE 3.5.2)
Installed from:    Ubuntu Packages
OS:                Linux

The specific screensaver I first saw this on was Fireworks - although I have tried it with 3 other screensavers with the same results.

I right click on the desktop, setup the screensaver, test it, and it works. I also try locking the session - the screensaver works here as well.

I then invoke the KControl Center and disable power management on the Display menu. The screen saver then never comes up.

I again invoke the KControl Center and enable power management (the time frame doesn't seem to matter). The screensaver starts working again.
Comment 1 Matt Fago 2007-01-26 21:39:45 UTC
Is this the same as #128610?
Comment 2 Michael Satterwhite 2007-01-26 21:48:43 UTC
On Friday 26 January 2007 14:39, Matt Fago wrote:
> 128610


The description of #128610 doesn't mention any association with the Display 
Power Management being off. As a result, there's no way to tell whether it is 
a separate bug or not.

The problem I reported can be reproduced by turning off Display Power 
Management. At that point, the screen saver no longer comes up. If it's 
turned back on, the screen saver starts working again.
Comment 3 Matt Fago 2007-01-26 22:21:38 UTC
Read comment #21 of #128610. Perhaps that person has your bug ...

I'm having a similar problem, but Power Management does not seem to help.
Comment 4 Michael Satterwhite 2007-01-26 23:50:05 UTC
On Friday 26 January 2007 15:21, Matt Fago wrote:
[bugs.kde.org quoted mail]

It sounds promising, but in my case the screen doesn't go dark (still *COULD* 
be same problem, I guess)

> I'm having a similar problem, but Power Management does not seem to help.


I'm guessing there are several problems in this area. Got to be hard on 
developers when symptoms vary that way.
Comment 5 Philip Rodrigues 2007-01-27 00:37:11 UTC
*** Bug 140663 has been marked as a duplicate of this bug. ***
Comment 6 Michael Satterwhite 2007-01-27 02:22:50 UTC
On Friday 26 January 2007 17:37, owner@bugs.kde.org wrote:
[bugs.kde.org quoted mail]

Possibly premature. Note that in the case I reported, the screen does *NOT* go 
dark as reported in 140639. Absolutely nothing happens when the screensaver 
should be invoked.
Comment 7 Vasilis 2007-01-27 22:37:34 UTC
I am using KDE 3.5.6 on Gentoo 2.6.19-ck2, and xorg-7.1.1. I do not have exactly the same problem with  Michael Satterwhite, as a matter of fact I did not test it. But, I do have a huge problem with kscreensaver because it has a mind of its own. It starts when ever it wants to start! I have set it to start after 2 min, and the monitor to turn off after 5 min. Kscreensaver, might start after 2min, and of course the monitor might turn off after 5min.

Vasilis
Comment 8 Philip Rodrigues 2007-01-27 22:58:43 UTC
*** Bug 140710 has been marked as a duplicate of this bug. ***
Comment 9 Ralph Moenchmeyer 2007-02-03 14:30:31 UTC
Hi I do not think that Bug 140663 is a duplicate of this bug (140639). 
In the case I reported in 140639 any chosen screensaver starts as it should. However, the real powersaving modes for the TFT screen as "standby " or a "switch off" of the screen do not work correctly. Instead the picture of the screensaver (e.g. "flurry") freezes, when a powersaving mode of the TFT screen should be initiated. 
I get this behaviour on SuSE 10.1, only, with KDE 3.5.5 and letest Nvidia drivers. 
On Opensuse 10.2  instead the OpenGL screensavers  are initiated correctly and the powersaving options for the TFT work perfectly, even in combination with Beryl. 
Comment 10 Marijn Schouten 2007-03-19 15:31:52 UTC
dupe of bug 122680
Comment 11 Philip Rodrigues 2007-03-20 23:10:51 UTC
Thanks Marijn

*** This bug has been marked as a duplicate of 122680 ***
Comment 12 Ivo Emanuel Gonçalves 2007-08-09 16:42:20 UTC
This bug is marked as RESOLVED, yet the problem persists in 3.5.6.  My platform's Kubuntu, compiler's GCC 4.

If Monitor's Power saving is disabled, when the screensaver timer reaches 0 the screen blacks out like it's showing the screensaver, only it isn't.  Funny enough, testing the screensaver manually in screensaver configuration works.  It only doesn't work when it's supposed to show it automatically.

Just in case this was a Power saving thing common to all desktop environments I tried doing the same thing in GNOME, but there the screensaver works even if I don't allow the screen to turn off.

Regarding the "black screen", it vanishes as soon as a key is pressed or a mouse gesture, just as if it was a screensaver.  I have seen this problem in older versions of KDE, and I always expected someone would have noticed and fixed it.  People did not notice, but it was never fixed.

I have to assume that KDE's screensaver and screen power off functions are badly structured, as reading other comments in this bug and duplicates show that there are other problems in these features.  Maybe they need a rewrite.
Comment 13 FiNeX 2009-01-02 20:33:38 UTC
Bug closed. Kdesktop is no more mantained.