https://bugs.kde.org/show_bug.cgi?id=511852
[email protected] changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #12 from [email protected] --- I had same/similar issue on Ubuntu 26.04 with a hybrid AMD/NVIDIA laptop. It was fixed by upgrading kwin-wayland from 6.6.4 to 6.6.5. **Hardware:** * AMD Cezanne iGPU * NVIDIA RTX 3060 Mobile * External LG 4K monitor connected via HDMI * `prime-select on-demand` **Symptoms (KWin 6.6.4):** * `kwin_wayland` consistently used ~10–12% CPU while idle whenever the external HDMI monitor was connected. * `journalctl` continuously logged: * `GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT` * `GL_INVALID_ENUM` * Unplugging/replugging HDMI cable with external monitor would stop/start both the CPU usage and the log spam. **Resolution:** Upgrading `kwin-wayland` from **6.6.4** to **6.6.5** completely resolved the issue. The framebuffer errors no longer occur, and `kwin_wayland` idle CPU usage returned to normal. -- You are receiving this mail because: You are watching all bug changes.
