SUMMARY When I start a KDE wayland session the system log receives the following message at a rate of about 4 messages per second. kwin_wayland[ PID ]: kwin_scene_opengl: 0x1: GL_INVALID_OPERATION in glUniformMatrix(matrix size mismatch) STEPS TO REPRODUCE 1. Start KDE Wayland 2. type journalctl -f OBSERVED RESULT A constant stream of the above message. EXPECTED RESULT No messages or a single message. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 40 Rawhide KDE Plasma Version: 5.93.0 KDE Frameworks Version: 5.249.0 Qt Version: 6.6.1 ADDITIONAL INFORMATION Machine is Qemu/KVM vm. inxi -G Graphics: Device-1: Red Hat Virtio 1.0 GPU driver: virtio-pci v: 1 Display: wayland server: Xwayland v: 23.2.4 compositor: kwin_wayland driver: N/A resolution: 1920x1080 API: EGL v: 1.5 drivers: kms_swrast,swrast platforms: gbm,wayland,x11,surfaceless,device API: OpenGL v: 4.5 vendor: mesa v: 24.0.0 renderer: llvmpipe (LLVM 17.0.6 256 bits) API: Vulkan v: 1.3.268 drivers: llvmpipe surfaces: xcb,xlib,wayland
https://invent.kde.org/plasma/kwin/-/commit/a649be64db7c66eee5ed26e26ea3f5aeb45552d8 fixed this, but only for when you have HDR enabled or KWIN_DRM_FORCE_COLOR_MANAGEMENT set, which I assume you don't?
No, I don't. Bog standard Fedora 40 KDE deployed in a WM. But here is a thing. I didn't see this with kwin_wayland 5.92.0. After upgrading to kwin-wayland-5.93.0-1.fc40.x86_64, the errors suddenly started rolling about 4 hours into the session. Can't see what triggered it in the systemlog. Today the errors started right after logging into the session. However, I just upgraded to kwin-wayland-5.93.0-2.fc40.x86_64, and I haven't seen the errors yet after a reboot. I will leave the session running and report back.
Haven't seen these errors again in the systemlog in nearly 24h. I suggest closing this bug unless there something you want me to test.
Ok cool, let's close it until you see it again.