No laptop display when external monitor attached
I just purchased a Dell P2210 LCD monitor and attached it to my MBP using the DVI cable. Everything looks good on the external monitor but when I try to view both the external and internal laptop, the laptop screen is completely black/blank. I've arranged the windows in the Display sys preferences to be side-by-side and I can drag a window to the blank internal monitor but it doesn't show up there. I've tried many different resolution settings and nothing works. Does anyone know what I can do to get it to work? Mirror displays is turned off.
Thanks,
Bob
Thanks,
Bob
Comments
did you already find the solution? i have exactly the same problem with my new LG Television (http://www.plasma-discounter.nl/product/1818727/lg-55ec930v.html) and my old macbook pro (http://support.apple.com/kb/SP583)