1600 X 1200
The native resolution fo UXGA is 1600 x1200.Ben
1600x1200
UXGA
A native resolution on a monitor refers to the resolution it is meant to be run at, where the resolution usually matched to being pixel perfect.
The native resolution of a television or display is the physical layout of the pixels in the display. It is fixed and cannot be set. Any signal received that is not at the display's native resolution will be re-sized to that it will fit the native resolution of the display.
The native resolution, which is the actual (and fixed) number of pixels built into the monitor.
Use your monitors native resolution.
When there is a mismatch between the native mode and the native resolution of a peripheral, such as a monitor, the display may not appear sharp or clear. This can result in blurriness, distortion, or scaling artifacts, as the image is adjusted to fit the screen's resolution. Additionally, colors and details may not render accurately, leading to a suboptimal visual experience. To achieve the best quality, it's essential to match the output resolution to the device's native resolution.
The specific resolution that displays are designed for is called the "native resolution." This is the optimal resolution at which a display can present images most clearly and accurately, as it corresponds to the actual number of pixels the screen has. Using a resolution other than the native one can result in a distorted or blurry image.
native
The most likely possibility is that your monitor might not support that particular resolution. Some monitors can be finicky about the resolution they support. Furthermore, if your monitor is an LCD monitor, you might not actually want it to be at 1366x768 if that is not the monitor's native resolution. LCDs are designed to look best at their native resolution.
Native Resolution is 1366 x 768