https://bugs.kde.org/show_bug.cgi?id=403133
Bug ID: 403133
Summary: Plenty of flickering and graphical glitches during and
after startup if compositing is enabled
Product: plasmashell
Version: 5.14.5
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: kurko2...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
Flags: X11+
When KDE desktop is being started, there's a lot of flicker and other glitches.
After the startup is completed, the desktop may look normal or not. But if you
move mouse over the task bar, use the applications menu, or start an
application, the flickering continues. The startup splash screen often appears
when this problem occurs.
A workaround is to disable compositing. When compositing is off, this problem
does not occur. Also, this problem does not occur with Wayland.
Here's a video showing this problem:
https://mega.nz/#!4pQw1AgR!Ujblms_CSSIrczLKpRapoLBiZGrM8xwXJ3JZm7-1EG8
Compositing options:
Enable compositor on startup: yes
Animation speed: medium
Scale method: Accurate
Rendering backend: OpenGL 2.0
Tearing prevention: Full screen repaints
Keep window thumbnails: Only for shown windows
Allow applications to block compositing: yes
System information:
Arch Linux, x86-64, kernel version: 4.20.0-arch1-1-ARCH
Plasmashell version: 5.14.5 (also occurred with 5.14.4)
GPU: Nvidia GTX 980 Ti
GPU driver: Nouveau
KDE workspace themes:
--Look and feel: Oxygen
--Desktop theme: Oxygen
--Cursor theme: Oxygen white
--Splash screen: Breeze
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