https://bugs.kde.org/show_bug.cgi?id=512511
--- Comment #8 from Nikola Novoselec <[email protected]> --- You're right, and I apologize for the noise. I let an LLM have a go at analyzing the logs and the conclusions I'd drawn, and clearly didn't verify the output thoroughly enough. The `DRM_MODE_FLAG_DSC` reference is definitely a hallucination - that flag doesn't exist in the kernel and there's no proposal for it either. I should have caught that before posting. I've since traced the actual KWin code path and confirmed you're correct: `DrmOutput::setDrmDpmsMode()` calls `commitPipelines()` with `CommitMode::TestAllowModeset`, which does set `DRM_MODE_ATOMIC_ALLOW_MODESET`. The premise of my analysis was wrong. The DSC correlation in my testing still holds (7680x2160@120Hz fails, lower bandwidth modes work), but as you pointed out, if KWin is doing the right thing, the issue is in the NVIDIA driver. I'll open a bug with them instead. Thanks for taking the time to respond and for catching the hallucinated content. Lesson learned on verification. -- You are receiving this mail because: You are watching all bug changes.
