Toshiba Libretto U100 User Manual page 206

Display Controller and Modes
3) Select the Monitor (CRT display), then select Apply button, because
2. Some reproduced DVD picture may not be displayed when the display
of the computer and a CRT display are used at the same. Reduce the
resolution, use the display of the computer only, use the CRT display
only or set display device in the multi-monitor, then play DVD.
Please refer to
Devices or the application guide for the setting of each display device.
3. When playback DVD title with Multiple Monitors mode, there are some
case that DVD Overlay is not shown. In this case, please try to playback
WinDVD with decreasing resolution, refresh rate or color depth after
exit WinDVD player.
4. There are some case that you can select non-support mode with LCD/
CRT Dual Clone mode or MultiMonitor mode. In this case, please try to
decrease CRT resolution, refresh rate or color depth.
B-8
the Primary Device is fixed into Notebook (the display of the
computer).
Figure B-2 Intel(R) 82852/82855 GM/GME Graphics Controller Prope...(1)
External monitor in this manual of Chapter8 Optional
User's Manual