[HELP] Screen Smearing / Frame Buffer Ghosting on Kubuntu 26.04 (Wayland)
System Info:
The Problem: I am seeing "screen smearing" or a "ghosting effect." When I switch windows or close a browser, the previous window remains visible for a few hundred milliseconds as a partial image. It feels like the display buffer isn't clearing instantly.
Context:
System Info:
- CPU: Intel Core i3-8100 (Coffee Lake)
- RAM: 8GB (4+4 DDR4)
- GPU: Intel UHD Graphics 630
- Storage: SATA SSD + HDD
- OS: Kubuntu 26.04 (Plasma 6.6 - Wayland)
The Problem: I am seeing "screen smearing" or a "ghosting effect." When I switch windows or close a browser, the previous window remains visible for a few hundred milliseconds as a partial image. It feels like the display buffer isn't clearing instantly.
Context:
- This was NOT happening on Linux Mint 22.3 cinnamon (X11).
- I currently have intel-media-va-driver-non-free installed.
- I suspect it's a synchronization issue between the Intel i915 driver and the KWin Wayland compositor.