PORTÉGÉ M400

Appendix B

Display Controller and Modes

Display controller

The display controller interprets software commands into hardware commands that turn particular parts on the screen on or off.

The display controller supports VGA, SVGA and XGA modes on the internal LCD display panel.

Two models are available:12.1" XGA, 1024 horizontal × 768 vertical pixels12.1" SXGA+, 1400 horizontal × 1050 vertical pixelsBecause of the LCD’s increased resolution, lines may appear broken in DOS mode.

The display controller also controls the video mode, which uses industry standard rules to govern the screen resolution and the maximum number of colors that can be displayed on screen.

Video modes

Video mode settings are configured via the Display Properties dialog.

To open the Display Properties dialog, click Start ->Control Panel ->Appearance and Personalization ->Personalization ->Display Settings.

If you are running some applications (for example a 3D application or video playback and so on), you may see some disturbance, flickering or frame dropping on your screen.

If that occurs, adjust the resolution of display, lowering it until the screen is displayed properly.

You could also disable Windows AeroTM to help correct this situation.

User’s Manual

B-1