Created attachment 98643 [details] A part of what happens When I switch my virtual desktops, a dark rectangle appears on the top right side (see picture). On the picture one cannot see that in the same time all elements of the panel are one above an other, with low opacity. I don't know how to debug further and give more info.
Still nothing?
Other relevant info asked on IRC from lspci 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) Kernel driver in use: i915
I forgot to say: I'm using the cube animation. Following the advice of crazy on irc, I booted with 'nomodeset i915.modeset=0'. The glitch disappeared (but I don't have any the animation anymore)
More Info ======== Computer: DELL Inspiron 4000 - Series 7437 OS: ArchLinux, up to date Soft versions: Linux OLINUX 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun 8 08:40:59 CEST 2016 x86_64 GNU/Linux xorg-server 1.18.3-2 xf86-video-intel 1:2.99.917+668+gc28e62f-1
Same here. With Kubuntu 16.04 + backports and fresh Neon on 2 Machines. It happens only with the bar at the top and Cube. https://www.youtube.com/watch?v=kuzkPIZcTzI Graphics: Card: NVIDIA GM204 [GeForce GTX 970] Display Server: X.Org 1.18.3 drivers: nvidia (unloaded: fbdev,vesa,nouveau) Resolution: 1920x1080@60.00hz GLX Renderer: GeForce GTX 970/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 361.42
The glitch is now different: only a black band between the two desktops during the cube animation. It's already better, and it shows that it's mostly a hardware issue.
It is back since 5.7.2 :S Like in AndreasH59 video
looks like bug 361511
Andreas, is it still the case on Plasma 5.8? because it is for me...
yes, its still there
*** Bug 373036 has been marked as a duplicate of this bug. ***
i have the same bug on a dell inspiron 7559: a black rectangle appear on the upper right side of the screen when i switch virtual desktop using the cube animation.
*** Bug 398438 has been marked as a duplicate of this bug. ***
Git commit ca1b5ea1070ccd23dd742f35d449e4a531ff7951 by Igor Poboiko. Committed on 14/09/2018 at 09:36. Pushed by poboiko into branch 'master'. [effects/cubeslide] Fix visual glitches with Blur / BackgroundContrast effect Summary: Bugs occurred because KWin was not very happy when windows were painted during CubeSlideEffect::paintScreen(). Another issue is that blur, although it was supposed to, did not work at all (haven't found appropriate bug on bugzilla). As well as background contrast effect. This patch does the following thing: - Adopted WindowForceBlur / WindowForceBackgroundContrast logic from SlideEffect, instead of panels/stickyWindows QSets (those become useless anyway) - Added shouldAnimate code, which determines whether a window should be animated with the cube (i.e. ordinary windows) or should stick (i.e. panels or pinned windows, if corresponding options are checked in the settings) - It paints an additional non-transformed screen, on which it paints only "sticky" windows. This is done because otherwise KWin would apply blur not behind the OSD, but on the same place on moving cube face. - (in addition) switched to new Qt5 connect syntax. Reviewers: #kwin, zzag Differential Revision: https://phabricator.kde.org/D15175 Related: bug 361516 FIXED-IN: 5.15.0 M +87 -54 effects/cube/cubeslide.cpp M +10 -3 effects/cube/cubeslide.h https://commits.kde.org/kwin/ca1b5ea1070ccd23dd742f35d449e4a531ff7951
*** Bug 401387 has been marked as a duplicate of this bug. ***