After the machine goes to sleep, hit a key on the external keyboard, the machine will awaken and work great.
BTW: When running with an External monitor, my TiBook is quiet, and cooler to the touch than when open. Also Apple does support a closed PBG4 with external monitor.
I'm still trying to figure to shut off the screen when open but with out sleeping (For saving Battery when traveling) also I sometimes have the screen off after using the sleep disconnect ext trick, and even the open, detect display, disconnect, detect again, then sleep. When I reawaken, the screen will not power on, and I have to restart.
Any Idea?
TEG