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Reading display modes and refresh rates
A display mode combines resolution and refresh rate, but the numbers shown in different parts of Windows describe different stages of the output path…
Read the articleWhat this section covers
The image on a screen is the result of rendering, composition, transmission, and display timing. Learn how graphics processors, operating-system interfaces, monitors, and cables contribute different parts of that result.
Understanding this family
A graphics processor can render images or perform other computation, while the display path presents a sequence of images to a physical panel. These activities are connected but not identical. An application may use one processor for rendering and another component's output path for presentation, especially on portable systems.
Display settings summarize capabilities negotiated among several pieces of equipment. Resolution, refresh rate, color depth, and signal format all consume resources along the link. A monitor's headline specification does not guarantee that every combination is available through every cable, adapter, dock, or operating-system configuration.
A useful place to begin
Read the rendering topics for the software-facing side and the display-link topics for the output side. They separate descriptive labels from compatibility guarantees. For actual graphics packages, use Windows Update or the computer or graphics-device maker's reference source, taking account of the exact system and its documented integration requirements.
Field notes
Display & Graphics at a glance
Display & Graphics: Drawing a frame (output)
- Applicationrequests drawing
- Graphics APIfor example DirectX or Vulkan
- Display driveruser and kernel parts
- GPUrenders the frame
- Monitorover the display cable
Write these down first
- Current driver version and date from the adapter's Driver tab
- Resolution, refresh rate and scaling for each monitor
- Which port and cable each display uses
- Any per-application graphics settings you changed
Clues, not a diagnosis
Might involve the driver: Flicker or black screens that began right after an update, a fallback to a basic display adapter, or one application misbehaving while others look fine.
Check these too: A loose or damaged cable, the wrong input selected on the monitor, a refresh rate the cable cannot carry, overheating, or a failing card. Artefacts that appear before the operating system loads are less likely to be a driver matter.
Where updates usually come from
The GPU maker for many desktop cards; for laptops check the computer maker first, because some ship display drivers customised for that model.
Practical articles
Topic
Rendering and graphics software
Rendering translates an application's description of a scene or interface into image data. The operating system and graphics software provide structured…
Topic
Display signals and monitor information
A monitor receives a timed signal with an agreed format. The available choices depend on the source, the receiving display, and everything between them…
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