Hello! Whenever I open fullscreen applications like games, the taskbar will freeze when switching windows and display the state it had on the first time it freezed. Steps to reproduce: 1. Open a fullscreen application. (In my case these were games from Steam, like Rocket League or DOTA 2) 2. Switch windows by pressing ALT-TAB Actual Results: 1. The taskbar freezes (no animations, elements are static like in an image) 2. The taskbar displays a state of itself, when it freezed the first time (example: Before executing a fullscreen application, the bar looks like this: [ ... [ Vivaldi - New Tab ] [ Steam ] ... 12:00 ] After starting it and switching to [Steam], it still looks like before with no visual changes. Elements are still movable, and the preview by hovering is appearing. Now after closing the application, the bar looks like this: [ ... [ Steam ] [ google.com ] [ #general - Discord ] ... 12:10 ] After opening another fullscreen application (at 12:10) and switching windows, it will return to the first state: [ ... [ Vivaldi - New Tab ] [ Steam ] ... 12:00 ] ) Expected results: The taskbar should still display the current state (open windows, time, animations, tray icons) when a fullscreen application is opened and windows are switched. Build date & Platform: I'm running Arch Linux with kernel version 4.8.13-1-ARCH with KDE 5.8.4-1. CPU is Intel Xeon E3-1230v5 and graphics card is a NVIDIA GTX 760 with the proprietary drivers (package version 375.26-1). I experience that problem since installing KDE about 2-3 weeks ago on a fresh install.
I want to add that this problem didn't occur yet with League of Legends started with Wine, and that it doesn't always happen on first try (sometimes 2nd to 4th time).
Can you tell me if this still happens and what version of Xorg you have?
It still happens with KDE 5.9.0 and Xorg 1.19.1.
I believe this is a dupe/may be related to: https://bugs.kde.org/show_bug.cgi?id=401272
here is short clip for you to understand: https://youtu.be/EPiDbixyOao sadly i have the same problem on the latest KDE Neon. i run the latest nvidia driver 430. Operating System: KDE neon 5.15 KDE Plasma Version: 5.15.5 KDE Frameworks Version: 5.58.0 Qt Version: 5.12.0 Kernel Version: 5.1.3-050103-generic OS Type: 64-bit Processors: 4 × Intel® Core™ i5-7600K CPU @ 3.80GHz Memory: 23,5 GiB of RAM
If I use the composer with opengl instead of xrender, I always get the bug. If I start any game in steam that deactivates the composer, when it goes to full screen, the image of the desktop is frozen as you can see in the video of comment 15. If I press ALT+Shift+F12 and I activate the composer, the desktop image is fine, if I press it again, the desktop is still "frozen". Another way to provoke this bug is when I use the composer in opengl and I deactivate the composer and start steam. In this case I can see that the desktop stays frozen and if I activate the composer manually you can see that the desktop works correctly. My graphics card is hybrid. If I change to intel graphics card I don't experience this problem. Operating System: Manjaro Linux KDE Plasma Version: 5.17.4 KDE Frameworks Version: 5.65.0 Qt Version: 5.14.0 Kernel Version: 4.19.91-1-MANJARO Nvidia drivers: 440.44-4 OS Type: 64-bit Processors: 8 × Intel® Core™ i7-7700HQ CPU @ 2.80GHz Memory: 7,7 GiB graphics card: nVidia GP107M [GeForce GTX 1050 Mobile] Intel VGA compatible controller
(In reply to francisco_t from comment #6) > If I use the composer with opengl instead of xrender, I always get the bug. > > If I start any game in steam that deactivates the composer, when it goes to > full screen, the image of the desktop is frozen as you can see in the video > of comment 15. I mean video of the comment #5 , sorry I can fix using "kwin_x11 --replace" after the problem, but I think it's not a good solution. How can I to help to debug this bug?
*** This bug has been marked as a duplicate of bug 353983 ***