SUMMARY sometimes with firefox in the foreground and i focus/restore konsole it will not draw the full konsole window properly. it will look like a box-shaped chunk was cut out of it. i cannot reliably recreate this. somewhat similiar effect when you play a video fullscreen with mpv (also hw accel) on the same desktop, it closes, firefox will momentarily be a black window before it refreshes. STEPS TO REPRODUCE 1. firefox in foreground 2. restore a minimized konsole which overlays part of firefox 3. a box sized chunk will be cut out of konsole, it does not match the position it overlays firefox nor the size. OBSERVED RESULT konsole window drawn with square chunk missing. EXPECTED RESULT konsole window drawn properly. SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.22.3 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION desktop effects enabled, nvidia gtx 980, firefox hw accel enabled. if I catch it doing it again I'll take a photo with my phone. it's rare but it has happened recently. it seems to only happen with konsole.
Cannot reproduce with Intel HD620 iGPU. Seems like it could be an NVIDIA issue.
Had this happen again and this time I was able to recreate the secret sauce for having it happen every time. compositor enabled, nvidia drivers. open firefox, not maximized. open konsole, position konsole over firefox. half over it, half over open desktop. shade the konsole. minimize konsole to taskbar by clicking on the taskbar entry. restore konsole from clicking taskbar entry. konsole not drawn properly. if you cannot recreate this I can make a video.
This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number.
Just tried it again with ver 5.27.7-r2 on Gentoo. Can still recreate this bug using the steps listed previously. Nvidia drivers 535.104.05
I know I've written this before, but everything still looks like a driver issue given we have no other reports. This bug was reported against an outdated version of KWin. We have made many changes since then. If the issue persists in newer versions can you reopen the bug report updating the version number.
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!