SUMMARY STEPS TO REPRODUCE 1. log in / kde desktop OBSERVED RESULT see description, always reproducible EXPECTED RESULT well, what a compositing window manager should do... SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: 5.3.0-3-amd64 #1 SMP Debian 5.3.15-1 (available in About System) KDE Plasma Version: 5.14.5 KDE Frameworks Version: 5.62 (?) Qt Version: 5.12.5 ADDITIONAL INFORMATION Intel CPU with integrated graphics, nvidia optimus, nouveau blacklisted, no nvidia-drivers installed (more info below) The following is basically a quote from debbugs (#deb943585, 27 Oct 2019): Right after login I get flickering black rectangles on the screen, which may cover up to 90% of its area. Windows mostly remain black or their content suddenly becomes visible, the task bar remains black and I see other residuals of the kde splash screen where windows should be drawn or the background wallpaper be restored. Swithing to a VT; all seems ok, kwin, the desktop and applications are running. So far, my only clue as to what may be going on is a workaroud I found: if I start a terminal via keyboard shortcut and issue blindly DRI_PRIME=1 kwin_x11 --replace then afterwards things behave mostly normally (Sometimes window content is still not correctly updated). I just picked this line up from older bug reports against kwin on the net without understanding what it does. This is the output of kwin following this command in the hope that it helps OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2) OpenGL version string: 4.5 (Core Profile) Mesa 19.2.1 OpenGL shading language version string: 4.50 Driver: Intel GPU class: Unknown OpenGL version: 4.5 GLSL version: 4.50 Mesa version: 19.2.1 X server version: 1.20.4 Linux kernel version: 5.3 Requires strict binding: yes GLSL shaders: yes Texture NPOT support: yes Virtual Machine: no -- System Information: Debian Release: bullseye/sid APT prefers unstable APT policy: (990, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.3.0-1-amd64 (SMP w/8 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE (tainted module is vmware kernel stuff (patched Workstation 14)) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)
I remember getting this with older versions when - disabling then re-enabling compositing by pressing Shift+Alt+F12 twice - modifying window rules I can no longer reproduce this with the current version from master branch.
Hi Christoph, thanks for your feedback. I have tried to compile a current version of kwin from the KDE repositories. Unfortunately, I will have to recompile some parts of kf5 to set up all dependencies (5.66 is required, 5.62 is the best my distribution would provide as is). This is currently out of scope for me. As I have a workaround, I will wait and report back once debian as progressed to that level. Thanks again, Stefan
It is also worth to mention that 5.14 is no longer supported by KDE.
Stefan, do you still experience this? Does it look like I have reported in #450329 ?
Uuhps, ghosts from the past. No, I haven't seen this for a long time now. It doesn't at all look like your wayland issue in #450329. From my POV the bug can be closed.
(In reply to stefan.schwarzer from comment #5) > Uuhps, ghosts from the past. > From my POV the bug can be closed. Great! :-)