SUMMARY When closing a window (or when hovering the mouse over 2 windows and the desktop in the background) in the "Show windows of all Virtual Desktops" Overview (Ctrl+F10), then rendering stops for one second. After about one second the rendering continues at a normal framerate. STEPS TO REPRODUCE 1. Open 2 windows (Maybe it shows even with one window). For instance 2 konsole-Terminals. 2. Press Ctrl+F10 in order to activate the "Show windows of all Virtual Desktops" Overview. 3. Close one terminal window OBSERVED RESULT After closing the window, the screen content hangs for one second. The mouse cursor movement is still rendered at proper speed. The hang occurs at the time when the window is fading out as a result of the close action, but it doesn't seem to be related to the exact state of the rendering. My setup uses 2 monitors, but it is also possible to see the hang if only one monitor is used. With 2 monitors, however, it is possible to produce a hang by hovering the mouse between 2 windows that are on different monitors. It is necessary to move the mouse between the 2 windows and to hover also a piece of the desktop region in order for the hang to show. It doesn't work when the 2 windows are on the same monitor. EXPECTED RESULT Average framerate above 50 frames per second. Longest interval to be smaller than 40 milliseconds. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 18.04 using X11 (available in About System) KDE Plasma Version: 5.12.8 KDE Frameworks Version: 5.44.0 Qt Version: 5.9.5 ADDITIONAL INFORMATION Kernel-Version: 4.18.0-18-generic VGA Controller according to lspci: 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07) Laptop Model: Thinkpad T480
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Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!