myanonap
Level 1 (0 points)

Q: 4K monitor not working with 10.9.3

Hi,

 

I installed Mac OSX 10.9.3 in my Early 2011-13inch MacBook Pro.

 

When I connect the 4K monitor from Samsung - U28D590D, via DisplayPort, it seems that Monitor/MacBook Pro detect the connection,

but the OS itself is frozen till I disconnect the DP cable. connecting via HDMI doesn't hang but with only 1080p resolution (as expected by the HDMI spec).

 

I guess I need to submit a bug report, but wonder if anybody has the experience with 4K monitor with 10.9.3 via DP port.

 

Thanks,

MacBook Pro, OS X Mavericks (10.9.3)

Posted on May 16, 2014 4:33 PM

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myanonap

Q: 4K monitor not working with 10.9.3

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  • Helpful answers

  • by Christian A. Burkert,

    Christian A. Burkert Christian A. Burkert May 16, 2014 4:47 PM in response to myanonap
    Level 2 (305 points)
    May 16, 2014 4:47 PM in response to myanonap

    hi there

     

    4K is supported on MacPro (late 2013) and if I am not mistaken MacBookPro 15" Retina (late 2013) both using OSX 10.9.3 only.

     

    So, you Early 2011 MacBookPro will not work with 4K, sorry.

  • by myanonap,

    myanonap myanonap May 17, 2014 1:15 AM in response to Christian A. Burkert
    Level 1 (0 points)
    May 17, 2014 1:15 AM in response to Christian A. Burkert

    Hi, Christian,

     

    I already read 10.9.3 release note that it only mentions those H/Ws.

    and I know that the Thunderbolt Gen1 doesn't support 4K at 60Hz.

    but it should support 4K at 30Hz or 1440p, 1080p at 60Hz according to the specification.

     

    The problem is that it hogs the cpu resources and make OS frozen once I connect a DP cable to the monitor.

    I have no problem with HDMI cable connection and can use this monitor at 1080p.

     

    I believe OS shouldn't be frozen when it is connected to a monitor (regardless 4K monitor, 1440p monitor, 1080p monitor).

     

    And I think the Mac OSX must support 4K at 30Hz or 1440p at 60Hz, as MS Windows and Linux OS support those resolutions.

  • by obarrufet,

    obarrufet obarrufet Oct 9, 2014 1:00 AM in response to myanonap
    Level 1 (0 points)
    Oct 9, 2014 1:00 AM in response to myanonap

    Hello myanonap

     

    I have the same issue  with my macbook pro early 2011 (Mavericks 10.9.5) with the same Samsung U28D590D monitor.

     

    Have you solved this problem? Can you tell me if exists any solution?

     

    Thanks in advance

  • by afein03,

    afein03 afein03 Oct 18, 2014 5:24 PM in response to obarrufet
    Level 1 (0 points)
    Oct 18, 2014 5:24 PM in response to obarrufet

    I have an early 2011 Macbook Pro and am using it with the Samsung U28D590D monitor running in full 4K.


    You need to buy an Active DisplayPort to HDMI adapter and download SwitchResX for it to work. Hook up the adapter, set the resolution in SwitchResX to 3840x2160 at 24Hz, and then (this part is key!!) close your laptop!!! With my Macbook Pro open I was not running anywhere near 4k.. I accidentally shut the screen while messing with the cord and it automatically switched the resolution to full 4k! I will put the links to the two products below.


    Hope this helps!

     

    Here is the link to the adapter: http://www.amazon.com/gp/product/B00DOZHL82/ref=oh_aui_detailpage_o03_s00?ie=UTF 8&psc=1

    Here is the link to SwitchResX: http://www.madrau.com/srx_download/download.html

  • by holymooly,

    holymooly holymooly Nov 18, 2014 5:10 AM in response to afein03
    Level 1 (0 points)
    Nov 18, 2014 5:10 AM in response to afein03

    Thanks for the info. I am trying this today. Does the OS your running make a difference?

  • by amgupt01,

    amgupt01 amgupt01 Nov 30, 2014 7:00 AM in response to holymooly
    Level 1 (0 points)
    Nov 30, 2014 7:00 AM in response to holymooly

    @afein03: Thanks a bunch for that info!

     

    Just wondering: is your 2011 Macbook Pro a 13-inch model? Does it use integrated graphics (Intel HD Graphics 3000) or a dedicated graphics card? Is it possible to use a slightly lower resolution than 3840x2160 and still keep your laptop open?