The Kwin logout/desaturate effect now works, but countdown/updated areas causes the effect to flicker in that region. So, for example, CPU usage bars in Conky or the shutdown countdown dialogue on the logout box flickers while the screen is dimmed. Frequently, the region will jump between the new number and the previously displayed number. Appears similar to https://bugs.kde.org/show_bug.cgi?id=277409 Reproducible: Always Steps to Reproduce: 1. Enable the logout effect. Run some sort of output that is updated frequently, e.g.: 2. Set a screenshot delay to take a picture of the logout dialog (Countdown will be at the top of the screen) OR 3. Run Conky in the background Actual Results: 4. Areas where there is active updating will flicker and jump back to the previous number in the countdown. CPU usage spikes in Conky. Expected Results: 4. No flicker should occur, only smooth transitions in the countdown dialogue. Using OpenGL and Raster. Open GL 2 Shaders is checked in Desktop Effects.
because of glSwapInterval ./. page flipping. nvidia gpu?
No Nvidia here. Here is the driver I have installed currently: xf86-video-intel 2.20.3-1 (xorg-drivers xorg) [installed] X.org Intel i810/i830/i915/945G/G965+ video drivers lspci | grep VGA: 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
Driver / GPU is not crucial but you could have easily turned off page flipping then :-( The bug is on the Todo list, in doubt we'll just skip glSwapInterval until there's a correct solution. *** This bug has been marked as a duplicate of bug 304375 ***