Created attachment 176066 [details] This is what I see in the tabbox SUMMARY When pressing alt-tab, the tabbox only shows flashing garbage (like pieces of windows alternating twice every second). alt-tab works, only the tabbox shows garbage. It's been this way since 6.0 in wayland. STEPS TO REPRODUCE 1. press and keep alt-tab OBSERVED RESULT garbage EXPECTED RESULT The same as with X11 SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20241119 KDE Plasma Version: 6.2.3 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.0 Kernel Version: 6.10.9-1-default (64-bit) Graphics Platform: Wayland Processors: 6 × AMD Phenom(tm) II X6 1100T Processor Memory: 15.6 GiB of RAM Graphics Processor: AMD JUNIPER ADDITIONAL INFORMATION
I cannot reproduce this - possible graphics card hardware/driver issue? Operating System: Fedora Linux 41 KDE Plasma Version: 6.2.3 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.0 Kernel Version: 6.11.8-300.fc41.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor Memory: 30.4 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 4070 SUPER/PCIe/SSE2
I've found the culprit, a wrongly configured .drirc file <driconf> <device screen="0" driver="r600"> <application name="Default"> <option name="force_glsl_extensions_warn" value="false" /> <option name="mesa_glthread" value="true" /> <option name="mesa_no_error" value="true" /> </application> </device> </driconf> The question I ask myself is: Why this wrong dri configuration only affects the tabbox? Renaming the file and restarting the session, the tabbox works as expected. Also this warning is produced. file:///usr/share/kwin/tabbox/thumbnail_grid/contents/ui/main.qml:170:37: Unable to assign [undefined] to bool
>The question I ask myself is: Why this wrong dri configuration only affects the tabbox? Not entirely sure, but kwin is very special when it comes to it's GL usage being a compositor. I don't think there's anything that implies kwin is doing something wrong.