Toshiba Portege A600 - Manual (Page 181)

User’s Manual B-1
Display Controller and Video mode
Appendix B
Display Controller and Video mode
Display controller
The display controller interprets software commands into hardware
commands that turn particular parts on the screen on or off.
The display controller also controls the video mode and uses industry
standard rules to govern the screen resolution and the maximum number of
colors that can be displayed at any one time. Therefore, software written for
a given video mode will run on any computer that supports that mode.
Video mode
Video mode settings are configured via the Display Properties dialog.
To open the Display Properties dialog, click Start  Control Panel 
Appearance and Personalization  Display.
Due to the display panel's increased resolution, lines may appear broken
in when displaying images in full-screen text mode.
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.
Disabling Windows Aero
TM may also help correct this issue.