Minidispay to DVI adapter using TB Display port

Discussion in 'Mac mini' started by mdgolom, Dec 2, 2012.

  1. mdgolom macrumors 6502

    Joined:
    Oct 26, 2006
    #1
    I currently have a 2012 Mini and a Tunderbolt Display. I have a secondary monitor plugged in using the HDMI to DVI adapter that came with the Mini. Since I'm experiencing the occasional flicker using the HTML port, I decided to pick up a TB to DVI adapter and plug it into the TB port on my display. For some reason it doesn't work and the display just stays black and goes into power saving. Have anyone successfully plugged in a monitor using the MiniDispaly Port to DVI (Apple's) adapter to the back of the TB display. I know both the display and DVI cables are good since it works off the HDMI port on the mini.

    Thanks
     
  2. philipma1957 macrumors 603

    philipma1957

    Joined:
    Apr 13, 2010
    Location:
    Howell, New Jersey
    #2
    mac mini (T-bolt cable) T-bolt display (t-bolt/mini display to dvi cable) monitor

    is this your setup? With the monitor on the end of the setup being dead.
     
  3. theanimala macrumors 6502

    Joined:
    Mar 2, 2007
    #3
    Dumb questions but did you change the input on the monitor to tell it to use the DP port rather than the HDMI port?
     
  4. jimbo1mcm macrumors 68000

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    Mar 21, 2010
    #4
    I use the Thunderbolt to DVI adapter for my Samsung Syncmaster monitor and it works perfectly.
     
  5. mdgolom thread starter macrumors 6502

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    Oct 26, 2006
    #5
    Yep, that's the setup.

    ----------

    Since I was using an HDMI->DVI adapter and switched to a MiniDisplayPort->DVI, I didn't need to change the input on the monitor. I did, however, try that with no luck.

    I haven't ruled out a problem with the TB port on the display. I'll probably put a call into AppleCare this week to see if they know of any issues.
     
  6. dogmusic macrumors member

    Joined:
    Oct 28, 2012
    Location:
    Ontario
    #6
    Could you please check your Thunderbolt bus Port Status in Systems Information and see if it shows a device connected?

    I have your set-up (different monitor) and my Thunderbolt bus Port Status in Systems Information shows "No device connected" and I'm wondering if this is normal.
     
  7. mdgolom thread starter macrumors 6502

    Joined:
    Oct 26, 2006
    #7
    On your setup is the adapter plugged into the back of the mini or to a TB Display?
     
  8. chrise2 macrumors 6502

    Joined:
    Sep 17, 2012
    #8
    From what I've read, you can ONLY plug in Thunderbolt data devices or a second Thunderbolt display to the Thunderbolt port on the TB display. You cannot plug in a minidisplay port monitor.
     
  9. jimbo1mcm, Dec 3, 2012
    Last edited: Dec 3, 2012

    jimbo1mcm macrumors 68000

    Joined:
    Mar 21, 2010
    #9
    My Thunderbolt Bus status: No device connected
    And I am reading that information off the screen that is working!!
    ----------

    I am using Apple part MB570z/A MiniDisplay port to DVI adapter. The adapter is plugged into the Thunderbolt output on my Mini and mates with the DVI Male end of the cable going to my Syncmaster 172W

    Under Graphics/Displays ( also in system info )in the Intel HDGraphics 4000 it shows under Displays:

    Syncmaster:

    Resolution 1280x768@60 Hz plus other specs
     
  10. dogmusic macrumors member

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    Oct 28, 2012
    Location:
    Ontario
    #10


    Thanks for checking. I guess it must be normal to see "No device connected" if you are not connected from one Thunderbolt port to another Thunderbolt port.
     
  11. uncleMonty macrumors regular

    Joined:
    Jun 8, 2012
    #11
    There is no miniDisplay port passthrough from an Apple Display. If you connect your Apple Display directly to the mini, it will only pass through TB to the next device in the chain, not miniDisplay port. Read anantech's review of the new displays for the details--he tested it.

    Your non-TB display might work if the first link in the daisychain is a storage device with two TB ports, then your TB display, then your non-TB display. The first link in the chain determines what passes through, as far as I understand but I have not tested it myself.

    Most external storage devices with two TB ports *will* allow miniDisplay passthrough, though. (Not that that helps you...)
     
  12. mdgolom thread starter macrumors 6502

    Joined:
    Oct 26, 2006
    #12
    This may be where the problem is. The TB Display is connected to the Mini, and the second monitor is connected to the TB Display. I guess the easiest solution is to call Apple Tech Support and ask the question. I'll try to do it tonight and post back the answer.
     
  13. blevins321 macrumors 68030

    Joined:
    Dec 24, 2010
    Location:
    Winnipeg, MB
    #13
    It 100% won't work. It's only passing one display channel. The only way to get this setup to work is to put another TB device in the middle, like a hard drive or something, and have the non-TB monitor connected to that device instead.
     
  14. mdgolom thread starter macrumors 6502

    Joined:
    Oct 26, 2006
    #14
    For anyone interested, I put in a call to Apple Support over the weekend. The Thunderbolt port on the TB display does not support MiniDisplay adapters.
     

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