X11 on Support Toolshttps://support.tools/tags/x11/Recent content in X11 on Support ToolsHugoen-USFri, 23 Oct 2026 00:00:00 -0500xrandr: Add a Custom Resolution and Set Up Multiple Monitorshttps://support.tools/linux-display-management-xrandr-guide-2025/Tue, 05 Aug 2025 10:00:00 -0500https://support.tools/linux-display-management-xrandr-guide-2025/<p>The two things people reach for xrandr to do are adding a resolution the monitor does not advertise and arranging two or more screens. Both take three or four commands on X11. This page starts with those commands, then covers persistence, Wayland (where xrandr cannot change outputs), and scripts for automatic profile switching.</p>