Posted 03 December 2007 - 10:59 AM
One of my coworkers from another office has a Sony Vaio VGN-TXN15P laptop. He has used the external display feature with projectors before, and was able to see both the laptop display and projected display simultaneously. Recently he came to our office, plugged into the projector, and did the FN-F4 (or whichever function key it is on his, itís F4 on mine.) He did get the pop up that lets you choose between laptop display only, external display only, or both. (I think on some laptops that operates at the BIOS level, not in Windows.) He chose both. He got the external display, but the laptop display went black. We tried it a few more times, same thing Ė we could see the pop up on the projected display to make a choice, we chose the icon for both displays, but the laptop display stayed black. After disconnecting from the projector, we had to cold boot the laptop to recover the display. Has anyone else seen this sort of problem?