SUMMARY When I have transparency active the parts are flickering when I am using the Zoom application. For me it looks okay, but for the person I present my desktop to, it is very disturbing. STEPS TO REPRODUCE 1. Set a translucent theme, e.g. Glassy or Harmony 2. Start a zoom session and share your screen 3. Enter the session with the phone or other client OBSERVED RESULT Flickering is visible for Windows that contain transparent elements EXPECTED RESULT The other person should see the same I see. SOFTWARE/OS VERSIONS Linux: Manjaro KDE Plasma Version: 5.20.2 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1
I just had a screen sharing session via Microsoft Teams and the other participants reported that there was no flickering. In Zoom this happens when compositing is one and probably the transparency effect. Could this be a Zoom issue? Should I file a bug there?
I have the same issue. In my case I've been able to fix it by switching to XRender for the compositor rendering backend: no flickering event with active transparency. With openGL 3.1 and 2.0 backends I get flickering, so I guess that OpenGL might play a role also for others affected by this issue. All of the above in a X11 session. My VGA is an Intel UHD Graphics 630 (integrated in a Core i7 8750H mobile CPU), and I'm currently using Mesa 21.0.2 and xf86-video-intel 2.99.917+916+g31486f40. SOFTWARE/OS VERSIONS Linux: Archlinux KDE Plasma Version: 5.21.4 KDE Frameworks Version: 5.81.0 Qt Version: 5.15.2
I forgot to mention that I have no problem when sharing screen with other applications like Discord.
This isn’t a Zoom issue per se. The same happens when recording the screen with e.g. Vokoscreen. I am assuming it uses the same video format as Zoom.
This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number.