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Old 03-01-2010, 05:27 PM   #1
wilsonsamm
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KDE 4.3.5 with compositing periodically freezes the screen for about a second


I'm on Gentoo Linux and I use KDE 4.3.5.
I use the proprietary nVidia drivers with my (NV44 based) Geforce 6200LE.

I have the desktop background change every so often so I see all my favourite pictures up there on my screen, but every time it changes, the rest of the screen freezes momentarily. If I am typing something, then it will take a fraction of a second for something to fill the last few letters in and move the cursor across. If I am watching a film (even fullscreen – when the desktop isn't showing!) then the film stops for half a second, and then plays at more than triple the usual speed until it's caught up with itself. But the CPU is not heavily burdened or anything. I reckon it's only to do with the GPU.

I know my graphics card is not that powerful, but I'm choosing to make do instead of replacing it. I don't remember this problem before the time when I upgraded to KDE post 4. Is this being more demanding of my GPU's power?
 
Old 03-01-2010, 08:39 PM   #2
lugoteehalt
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Don't know but could you be missing some stuff from /etc/X11/xorg.conf? e.g.
Code:
Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24       
    Option         "TwinView" "0"
    Option         "metamodes" "1360x768 +0+0; 1280x768 +0+0; 800x600 +0+0; 640x480 +0+0"
    Option         "RenderAccel" "true"
    Option         "AddARGBGLXVisuals" "true"
    Option         "AllowGLXWithComposite" "true"
    Option         "TrippleBuffer" "true"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection
The wrong stuff and it will slow down horribly.
 
Old 03-02-2010, 04:25 AM   #3
wilsonsamm
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I did not know about those options in Section "Screen"!

I'm going to see if the flickering and the freezing has stopped. Are there any more of these options I should know about?
 
Old 03-02-2010, 05:07 PM   #4
lugoteehalt
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Don't really know, just put in everything I could come up with. Get strong impression renderacceleration true speeds things up hugely. This might help, http://www.x.org/wiki
 
Old 03-02-2010, 05:37 PM   #5
tredegar
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Warning:- Off topic: but lugoteehalt, Bush doesn't seem to be president of the US any more.
Maybe it's time you edited your sig ?
Linux distros, and times, move on
 
Old 03-02-2010, 11:39 PM   #6
lugoteehalt
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Au contraire Bush is still the president. You should have some sort of basic instinct for survival.
 
  


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