If you desire to mirror your internal PowerBook monitor to an external DVI monitor, there are a few things to consider:
- If you have an older pre-DVI, ADC PowerBook (Titanium), this has not yet been tested.
- If you have an NVidia card, as shipped with the 12" portables, this will not work.
- You need an ATI video card foundation, as shipped with the 15" and many 17" PowerBooks.
- Do NOT use the Display configuration panel provided from the System Tools menu.
Instead, do the following:
- Download this xorg configuration file.
- As root, move it to /etc/X11/
- Edit the screen0 resolution to match that of your PowerBook and external display*:
Section "Screen" Identifier "Screen0" Device "Videocard0" Monitor "Monitor0" DefaultDepth 16 SubSection "Display" Viewport 0 0 Depth 16 Modes "1280x854" <-- modify this (built-in screen) ... EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Videocard0" Monitor "Monitor1" DefaultDepth 16 SubSection "Display" Viewport 0 0 Depth 16 Modes "1920x1200" <-- ... and this (external display) EndSubSection EndSection
- Backup (copy) the current xorg.conf file:
cp xorg.conf xorg.cong.bak [ENTER]
- Sym-link the new xorg file to make it active:
ln -s xorg.conf-dual xorg.conf [ENTER]
- Attach your external DVI monitor, power it on, and make certain it is set to the DVI port.
- Reboot your PowerBook.
This HOWTO was prepared by Kai Staats, Terra Soft Solutions