SUMMARY Since I installed KDE Plasma on Artix Linux, I can't record or screenshot the screen properly because the 'recording video buffer' is glitching/tearing constantly with old frames, unless reseting the compositor with [alt]-[shift]-[F12] two times. Most of times, obs will show 1 frame of actual existing screen and second frame with an older frame. This process will repeat forever. Dragging windows fast with Wobbly Windows desktop effect will accelerate this process, but even rendering videos produce this effect. This will also affect screenshots or any screen capturing software, except the actual physical display(s). STEPS TO REPRODUCE 1. Install the kde plasma on Artix Linux 2. Install OBS or any recording software [WARNING, the next step may include fast epileptic seizures] 3. Record and drag around fast the windows with wobbly effect to accelerate this process. OBSERVED RESULT A glitchy epileptic screen. Video of the bug: https://youtu.be/dgIPl1XOh3o EXPECTED RESULT To record smoothly. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Artix Linux rolling with kernel 6.0.12-artix1-1 KDE Plasma Version: 5.26.4 KDE Frameworks Version: 5.101.0 Qt Version: 5.15.7 Graphics Platform: X11 ADITIONAL INFO: I don't know exactly what this bug is, so I just gave it the best name I could think of.
(In reply to bajcsielias78 from comment #0) > SUMMARY > Since I installed KDE Plasma on Artix Linux, I can't record or screenshot > the screen properly because the 'recording video buffer' is > glitching/tearing constantly with old frames, unless reseting the compositor > with [alt]-[shift]-[F12] two times. Most of times, obs will show 1 frame of > actual existing screen and second frame with an older frame. This process > will repeat forever. > Dragging windows fast with Wobbly Windows desktop effect will accelerate > this process, but even rendering videos produce this effect. > This will also affect screenshots or any screen capturing software, except > the actual physical display(s). > > > STEPS TO REPRODUCE > 1. Install the kde plasma on Artix Linux > 2. Install OBS or any recording software > [WARNING, the next step may include fast epileptic seizures] > 3. Record and drag around fast the windows with wobbly effect to accelerate > this process. > > OBSERVED RESULT > A glitchy epileptic screen. > Video of the bug: https://youtu.be/dgIPl1XOh3o > > EXPECTED RESULT > To record smoothly. > > SOFTWARE/OS VERSIONS > Linux/KDE Plasma: Artix Linux rolling with kernel 6.0.12-artix1-1 > KDE Plasma Version: 5.26.4 > KDE Frameworks Version: 5.101.0 > Qt Version: 5.15.7 > Graphics Platform: X11 > > ADITIONAL INFO: I don't know exactly what this bug is, so I just gave it the > best name I could think of. Here it's a recording of my screen in real life: https://youtu.be/vX7ozRsuUTE
Can't reproduce on Wayland. And I don't know what XDP does on X11
(In reply to Vlad Zahorodnii from comment #2) > Can't reproduce on Wayland. And I don't know what XDP does on X11 I tested in Wayland. Can't reproduce it either in Wayland, but can in X.
On X11 it's not handled by XDP (or anywhere in Plasma or even KDE). It's between OBS and X11.
I am no expert in capturing screens and stuff like that, but I can see it happens only when the compositor is active. In fact even Spectacle can take fullscreen screenshots with the old frame if screenshots at the right moment and basically everything that can take capture output from screen. I never experienced something like this in any DE/WM except for KDE. In fact I also have a secondary WM, dwm.
Moving it to kwin for now.
Kwin isn't involved in this