SUMMARY *** When enabling HDR to my 4K Samsung TV QLED, it just freezes and then after 30-40 seconds I am to change modes again and disable HDR to correct it *** STEPS TO REPRODUCE 1. Enabling HDR on 4K Samsung TV OBSERVED RESULT just freeze without turning HDR or any indication of it working EXPECTED RESULT to work just as it is on my 2 DisplayPort Monitors, Tried different cable with same results SOFTWARE/OS VERSIONS Operating System: EndeavourOS KDE Plasma Version: 6.0.2 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernel Version: 6.7.9-x64v3-xanmod1 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 5800X3D 8-Core Processor Memory: 31,3 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 3090/PCIe/SSE2 ADDITIONAL INFORMATION Additionally I also experience this on my Laptop which uses AMD+Nvidia prime, same OS, Steam Deck through Gamescope works correctly with the TV.
I was able to track more info in regards to this, when the freeze occur in journal this message is flooding it until it reverts to regular back. kwin_scene_opengl: Invalid framebuffer status: "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT" kwin_wayland_drm: Checking test buffer failed! kwin_scene_opengl: 0x502: GL_INVALID_OPERATION error generated. <image> and <target> are incompatible
*** This bug has been marked as a duplicate of bug 483697 ***