**Additional Information:** The glitch only occurs when the external monitor (1920x1200) is positioned above the internal display (1920x1080) in a vertical setup. In a side-by-side (horizontal) arrangement, no issues are observed.
- Internal display: 1920x1080 (eDP-1) - External display: 1920x1200 (HDMI-1/DP-1) - The issue does not occur in X11. Hypothesis: Likely a Wayland/Mutter bug related to vertical multi- monitor handling with mismatched resolutions and hybrid GPUs (Intel Arc + NVIDIA). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2130319 Title: Glitch on laptop screen when using dual display under Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.14/+bug/2130319/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
