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List:       kde-bugs-dist
Subject:    [Bug 189428] New: nVidia: Some KWin desktop effects cause entire
From:       peaches <pzcdyhbb0nzq9layi4mcj1hhp () gmail ! com>
Date:       2009-04-12 2:34:57
Message-ID: bug-189428-17878 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=189428

           Summary: nVidia: Some KWin desktop effects cause entire screen
                    to stop updating.
           Product: kwin
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: compositing
        AssignedTo: kwin@kde.org
        ReportedBy: pzcdyhbb0nzq9layi4mcj1hhp@gmail.com


Version:           KDE4 trunk r951942, qt-copy trunk r942603 (using Devel)
OS:                Linux
Installed from:    Compiled sources

GeForce 7950GT
nVidia driver v.180.44

I made a list of effects with problems:

Zoom and Snow effects:

* toggling these freezes the video display, except the mouse cursor which can
move around and change form.
* the desktop is still interactive, just can't see what you're doing.
* with Snow, going into "Present Windows" effects mode actually shows the
window presentation just fine as well as the white snow falling around. but
exiting "Present Windows" mode goes back to a frozen display
* having "Show Paint" effect on while frozen shows the entire screen empty in
what looks like a base gray color being repeatedly flashed with the effect's
update indicator colors
* can toggle out of these effects and get display unfrozen just fine
* FPS effect overlay updates regularly while these effects are toggled, showing
FPS increase while display frozen

Looking Glass, Sharpen, Magnifier effects:

* using these has same display freeze / interaction as above
* display doesn't repaint normally like above while in "Present Windows" mode,
nor does FPS display update
* "Show Paint" effect doesn't show any color updates anywhere, just a frozen
screen
* have to --replace kwin to get properly display back

Configuration:
compositing type: OpenGL
OpenGL mode: Texture From Pixmap (Shared didn't make a difference)
enabled DRI
vsync didn't make a difference

my xorg.conf basically just has glx module, dynamic twinview for multihead..
nvidia-settings has all vsync related stuff off... (is this enough info?)

All other KWin effects seem to work just fine.

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