miller11178
Level 1 (2 points)

Q: Cant connect dell U2715H monitor to macbook pro mid 2009

bought a new dell u2715h monitor to connect to Macbook pro mid 2009. Mini displayport to Displayport with dell supplied cable will not work. Dell in power save mode and system prefs cant detect external monitor. Im crying - why does everything have to be so hard??

MacBook Pro, OS X Mavericks (10.9.5)

Posted on May 5, 2015 2:12 PM

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miller11178

Q: Cant connect dell U2715H monitor to macbook pro mid 2009

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  • by norm123,

    norm123 norm123 May 7, 2015 1:02 PM in response to miller11178
    Community Specialists
    May 7, 2015 1:02 PM in response to miller11178

    Hello miller11178,

     

    If you want are having issues with your monitor not working with your MacBook Pro as an extended or mirrored desktop, then take a look at the article below to get you started with getting it working for you. I would try a different mini display cable if you can get access to one. 

     

    Apple computers: Troubleshooting issues with video on internal or external displays

    https://support.apple.com/en-us/HT201177

     

    Regards,

    -Norm G. 

  • by marvinrox,

    marvinrox marvinrox Jun 18, 2015 2:51 AM in response to miller11178
    Level 1 (0 points)
    Jun 18, 2015 2:51 AM in response to miller11178

    Hoping you have fixed this, it's an obvious question but did you change the source on the Dell monitor and select the port (HDMI or other) as the source. this fixed it for me

  • by Bugmango,

    Bugmango Bugmango Sep 9, 2015 2:59 PM in response to miller11178
    Level 1 (0 points)
    Sep 9, 2015 2:59 PM in response to miller11178

    Hey Miller! I hope you fixed your problem by now, but for the others who (like me) found this question because they are having the same issue here is how I just solved it:

     

    There are two things you need to make sure are correct in order for it to work.

     

    1) There are multiple spots on the back of the Dell monitor in which the mDP cord to display port fits. If you have it in the wrong one all you will see is the 'power saving' screen of death. The correct one is labeled 'DPin'. It looks like there are 2 of them, the one i'm using (which works) is the one directly to the right of HDMI 2.

     

    2) After it is connected to the proper port, use the buttons on the front to select the input source as 'DP' which is the one on the top. I kept having issues because i assumed it was supposed to use 'mDP' (3rd from the top) but that wont work.

     

    Hope this works for you as well!

  • by codestryke,

    codestryke codestryke Feb 29, 2016 10:33 AM in response to Bugmango
    Level 1 (0 points)
    Feb 29, 2016 10:33 AM in response to Bugmango

    Thanks a lot, this helped me. There are two ports one in and one out. I was connecting the cable to the DPin out

  • by AxeBox360,

    AxeBox360 AxeBox360 Mar 26, 2016 11:59 AM in response to codestryke
    Level 1 (37 points)
    Apple Watch
    Mar 26, 2016 11:59 AM in response to codestryke

    Lucky, I could not get it to work so I used a regular HDMI cable.