How to disable keyboard/mouse input locking when in Target Display Mode

Discussion in 'iMac' started by jediDev, Jun 7, 2013.

  1. jediDev macrumors regular

    Jun 13, 2012
    So here's my scenario

    * MBPr using 2012 21.5 iMac as a display via Thunderbolt Cable and Target Display Mode.
    * iMac display mirrored on a large external monitor via mini displayport

    This is admittedly an unusual scenario but there are times when I need to use my MBPr for video editing but I need to monitor a live video feed on the iMac and sometimes use the keyboard to control that video feed.

    The problem is that while I can get the video to show up properly, the iMac disables its keyboard and mouse when it's in target display mode (except for the command-f2 sequence for exiting target display mode). This makes sense in 99% of cases but for me, I'd like to be able to interact with the iMac.

    So, does anybody know if there's a way to disable the normal behavior here? There are workarounds, like VNC and I suspect Synergy. But ideal would be just reenabling the iMac's keyboard when it's in target display mode but mirroring.

    Thanks. And I guess if this is possible to do it means there's more than one person in the world with my use case. But I'm not optimistic...
  2. chiarov macrumors newbie

    Jul 28, 2013
    Yes, I have a similar issue. I want to use my iMac 27" and a PC connected to it in target display mode, but I also want just one keyboard / mouse across both systems.

    Have you figured out a solution to keep the Mac KB/mouse alive while in target display mode?

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