After I open and close Krunner or any of the Plasma widgets (for example, Kickoff menu or Calendar which appears when i click on Clock widget, or Notification Zone), sometimes shadows around them remain on the screen and start blinking. I have Nvidia GTX770, 346.59 proprietary driver, ubuntu vivid. I have tried all the options about anti-tearing in effect settings, as well as opengl 2.0 and opengl 3.0. Disabling effects solves the problem, because without effects there are no shadows. Unfortunately, I cannot attach a video of this bug, because once I start recording it with recordmydesktop, the problem disappears! So, only screenshots (in attach). These shadows blink for 2-3 seconds and disappear totally Reproducible: Always Steps to Reproduce: 1. Open Krunner of click at any plasma widget, which would open a plasma popup 2. Close it Actual Results: The shadow remains around the place, where was window, and it blinks for 2-3 seconds Expected Results: Window should disappear totally
Created attachment 92270 [details] kickoff
Created attachment 92271 [details] krunner
Created attachment 92272 [details] clock
I have also tried XRender: the problem is still here, but these shadows do not blink, just remain on their place and disappear soon. I have tried disabling such effects as Blur, semi-transparency, fading out. Also, this bug is only seen only in the desktop zone (not on the window): 4th attachment
Created attachment 92273 [details] desktop
Animation speed setting?
BLAST!
With the biggest animation speed (no animation) it doesn't reproduce, in the next position it is just as on the screenshot, in the next position it still exist, but can hardly be seen, in next positions there is no such problem
By saying "can hardly be seen" i mean these shadows are more transparent.
*** This bug has been marked as a duplicate of bug 344359 ***