Thunderbolt question

Discussion in 'MacBook Pro' started by Prodo123, Oct 8, 2011.

  1. Prodo123 macrumors 68020


    Nov 18, 2010
    If the ATD doesn't support Mini DisplayPort daisy-chaining, how about the one on the MacBook Pro?
  2. iMacDragon macrumors 68000


    Oct 18, 2008
    I'm not sure anyone knows, and I've not heard of a display port 1.2 monitor with chaining support being on market yet for anyone to be able to test with.

    And the reason the ATD doesn't is a technical limitation of the thunderbolt chipset, as shown by anandtechs comprehensive review of the display, each chip can only separate one displayport stream out of the thunderbolt traffic, leaving the rest to be forwarded on, still as part of the thunderbolt traffic, rather than as a raw display port input, hence a display port adapter doesn't working directly though the display, but does though another device chained that doesn't extract the display port output for it's own use.
  3. dusk007 macrumors 68040


    Dec 5, 2009
    Apparently there is this weird config.
    MBP <-> ATD <-> ATD //works with all MBPs according to Apple
    MBP <-> ATD <-> DP Display //doesn't work
    MBP <-> ATD <-> someTBdevice like the Paragon raid thingy <-> DP Display //works

    The reason is probably because Apple wants you to buy more ATD and throw away all your old DP Displays and polluting the environment more by advertising the way of a throw it away and buy new culture.
    and the link in the update

    I guess at some point they might release a FW upgrade that ends this limitation again.

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