i just mirror my displays.
Which is fine if you have the 17" MacBook Pro because they both share the same resolution. Otherwise, Mirroring is not a good idea.
i have a 15" and it woks just fine with mirroring.
So instead of running your 24" Cinema Display at the native 1920x1200 resolution, you're running it at 1440x900?
no its running at 1920x1200. huh i see what your saying tho. well frick me i dont know what im doing then. it just worked when i plugged it in.
Well if you are running your ACD at 1920x1200, then you aren't using mirroring at all. You'll have your MacBook Pro set as the secondary display (if the Dock appears on your ACD) or as the primary display if the Dock appears on your MacBook Pro's screen.
Mirroring is where the same is on both screens - hence why they must both be running the same resolution, and because the 15" MacBook Pro can only go up to 1440x900, mirroring isn't a good idea.
Can I configure my mac so that whenever I dock it, it automatically goes into single monitor mode and chooses the external LED screen? As soon as I undock it, it should switch back to the laptop LED screen.