MBP + Samsung Monitor = Monitor keeps cycling on and off during display sleep

Discussion in 'MacBook Pro' started by el3ctone, Aug 17, 2011.

  1. el3ctone macrumors member

    Jun 28, 2008
    I have a Early 2011 MBP13, and i have it hooked up via a genuine Apple Mini DP to DVI adapter to my Samsung P2770HD Monitor.

    When the display sleeps, the samsung monitor will sleep but then cycles on and off repeatedly just displaying the words "No Input Signal" when on, for the entire day/night. The MBP LCD however stays off. I cannot figure out what is wrong, but i did try another monitor on my and it works fine. I think its probably a compatibility issue with the samsung monitor getting along with the MBP, since the Samsung monitor worked fine when hooked up to my desktop PC.

    Anyone have any idea or similar experience in which i can fix this problem?
    I contacted samsung and they had no suggestions.
  2. turnerh macrumors newbie

    Aug 20, 2011
    Same problem

    I'm having the exact same problem. I have the same Samsung display. I have a 2011 15'' MBP hooked up via a DVI connection to the P2770HD.

    The monitor will sleep, but constantly cycles between sleep and "No Signal". I'm not an LCD expert but I imagine that this cannot be good for the display.

    It must be an issue with the monitor or maybe something that the drivers correct, but there's no Mac drivers on Samsung's site.

    I'm planning on returning mine to Costco where I got it, unless anyone has a solution. Apple's Thunderbolt display is looking more and more appealing ;)
  3. el3ctone thread starter macrumors member

    Jun 28, 2008
    its kind of sad because the past decade or more i've used computers without manually turning off the monitor. I'm leaning more towards samsung for the problem, but it seems both companys could be at fault, since my samsung works fine with another computer, and my MBP works fine with another monitor.

    I guess i will contact apple about this issue.
  4. Lennyvalentin macrumors 65816


    Apr 25, 2011
    Consider pressing the monitor's "off" button when you're not using the computer until your issue has been resolved. Also, while still using power, it will be less in an "off" state than in standby (and particularly if it keeps going on and off repeatedly.)

    You may want to try a different mini-DP to DVI converter. There was another thread in here recently that has a nice full cable converter (IE, not a dongle like Apple's) linked in it. I use that exact cable model myself, and it works great hooked up to an ancient Dell monitor (waiting for the thunderbolt display to come out.)

    In the meantime, you could also try another DVI cable to hook up to your Apple converter. Not that I expect it to make a difference, but hey... Why not try everything just to make sure? :)
  5. el3ctone thread starter macrumors member

    Jun 28, 2008
    Turnerh: what model MBP are you using?
  6. el3ctone thread starter macrumors member

    Jun 28, 2008
    i finally couldn't stand it anymore, I downgraded to a VGA connection and my monitor now goes to sleep properly.

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