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ThunderBolt + External Monitor = Mounds of Woe

105637 Views 164 Replies Latest reply: Jun 5, 2013 3:54 PM by enrybo RSS
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entropic23 Level 1 Level 1 (0 points)
Currently Being Moderated
Mar 7, 2011 5:42 PM
I posted this issue in another thread but since I'm seeing more issues I thought it best to create my own post.

I use an external monitor, connected using either HDMI or DVI. This monitor (an Ausus) works fine & has been working correctly attached to my old macbook.

With the new 2011 MBP, I can get the external monitor to work, but it exhibits strange behavior. It's difficult to make it the primary monitor using the normal macbook methods, and so I have resorted to just dimming my MBP display to zero (which I don't like having to do).

Once the external is running (either mirrored or as extended) it functions normally. However if the MBP display goes to sleep (or the MBP itself goes to sleep), the external will go black but remain on. When this happens I can no longer turn the external on/off or use any of the buttons on the display. It's frozen in this black "on" state. I have to remove the mini display adapter from the Thunderbolt port which makes the MBP screen primary again & I can then enter pass and wake the MBP up.

At first I thought I could turn the external off and access the controls once the mini display adapter was removed but this is no longer the case. Once it's in this "frozen" state the external won't do ANYTHING until I actually unplug the power cord.

This renders an external monitor on the new MBP's unusable. I reported this to Apple directly along with this post. I may call apple tech support when i have the time. Hopefully I won't have to return this lappie because overall I really like it, but no external monitor is not cool.

I would love to hear if anyone else is having this issue or has any ideas for a fix.
13" macbook pro (early 2011), Mac OS X (10.6.6)
  • gonzoguy24 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 11, 2011 9:37 AM (in response to entropic23)
    I just purchased a 13" 2011 MBP. Came home all happy and took my Moshi MDP to HDMI adapter, plugged in an HDMI to DVI cable to my 23" DELL P2311H monitor only to find that it says that the output frequency is wrong and I should set it to 1920X1080@60Hz, which is what my MBP was set at. Got another HDMI to DVI cable and this time nothing happened at all. The MBP detects to the monitor but nothing shows up on the monitor.

    My P2311H has no HDMI input and I just bought it. I can confirm when I plugged in my Samsung HDTV using an HDMI to HDMI cable with my adapter and my MBP, it worked flawlessly.

    I will call Apple as well and see what happens.
    Macbook Air 13.3" (Winter 2011), Mac OS X (10.6.6), 4 GB Ram
  • evandepol Level 1 Level 1 (0 points)
    Currently Being Moderated
    Mar 14, 2011 3:13 PM (in response to entropic23)
    Not sure if Apple Tech got the message clearly enough yet, as the particular support person I talked to consider the problem "resolved" when mentioned that VGA does work (of course, DVI is still broken, which is the reason for calling them in the first place).
    Macbook Pro 2011, Mac OS X (10.6.6)
  • CameronChamberlain Calculating status...
    Currently Being Moderated
    Mar 16, 2011 3:05 AM (in response to entropic23)
    Same Issue. Apple branded adapter with Dell Monitor. Computer does not realise that there is a monitor attached.

    Pretty please fix it Apple.
    MacbookPro2011, Mac OS X (10.6.6)
  • wind1084 Calculating status...
    Currently Being Moderated
    Mar 16, 2011 3:23 AM (in response to entropic23)
    Same issue.
    I have a Benq G2200HD monitor and it works well with my old Macbook on with DVI adapter.
    I bought my new 13 inch macbook pro last week and it was working.
    Today, when I replug the miniDP to DVI adapter, it won't detect the display anymore. I am sure that my monitor, cable, adapters are working.
    Macbook pro early 2011, Mac OS X (10.6.6)
  • M Gnu Calculating status...
    Currently Being Moderated
    Mar 16, 2011 6:05 AM (in response to entropic23)
    I would not say HDMI is trouble free either.

    Problem: New 13" MBP i7, connected to ASUS VE276Q via mini-display port to HDMI converter. Display sleep causes the ASUS to go to sleep (orange LED), then power cycle on after about 1 second. After the computer sleep timer threshold is hit, this behaviour continues, and MBP won't sleep until you touch the trackpad (internal or bluetooth).

    Solution: MBP & ASUS behaves and sleeps the way it should when connected to this monitor via mini-display port to display port cable.

    Also Another Solution: MBP & older ASUS VE22 series will both sleep correctly using the previously buggy MDP to HDMI converter.

    Conclusion: MBP & some monitors don't work well together.

    Sorry, not more scientific.....
    Mac OS X (10.6.6)
  • speters703 Calculating status...
    Currently Being Moderated
    Mar 16, 2011 10:52 AM (in response to entropic23)
    Just a note and I know it goes to a different crowd of people outside of those with 13 inch models. But the Thunderbolt + DVI combo on my new 2011 (17inch). Required me to have the discrete GPU enabled before it would detect. So if any of you with 15/17's are running something like gfxCardStatus and locking down to only integrated GPU for power savings make sure to enable dynamic switching again if you goto multi-display setup.

    Forgive me if this has already been stated in other threads etc.
    MacBook Pro 17 (2011), Mac OS X (10.6.6)
  • Wyseman Calculating status...
    Currently Being Moderated
    Mar 17, 2011 12:00 AM (in response to entropic23)
    I have a similar issue here with an ASUS VK266H and a 15" 2011 MBP.
    Tried the Apple branded Mini-Display-Port to DVI adapter and external monitor won't sleep, it just goes black but remains powered on. Apart from that, no problems with the display, works great.
    I tried with a Toshiba monitor via DVI adapter and it worked just fine, powered off when it should.

    I picked up a Moshi MDP to HDMI adapter (Asus Monitor has DVI, HDMI and VGA), but this has the same problem, no sleep, just black.
    2011 Mac Book Pro 15", Mac OS X (10.6.6), Connect to ASUS Vk266H via DVI or HDMI
  • George Waxstetter Calculating status...
    Currently Being Moderated
    Mar 17, 2011 9:45 AM (in response to Wyseman)
    I also had a similar problem. When I attached my new 15" 2011 MBP to my dell sp2309W,
    the computer screen went black and the monitor indicated there was no DVI signal.

    The monitor had worked perfectly for two years with my old MBP 2007... so I figured it wasn't the monitor.

    So I went back to the apple store and exchanged the Apple Branded Min-Display-Port to DVI adapter
    for a new one and the problem was solved. I've been using it intensively for a week and a half
    and so far there haven't been any additional problems.
    Fingers crossed I just got a bad adapter.

    I don't know if this will work for anyone else, but it worked for me. Worth trying if nothing else
    is working.
    Macbook pro 15inch 2.2 Ghz core i7, Mac OS X (10.6.6), 4 GB Ram
  • blabla123 Calculating status...
    I don't use a DVI oder HDMI Adapter. I've just a normal Mini-Display-Port to Mini-Display-Port-Cable. But the same problems.

    Anyone else?
    MBP 2011, Mac OS X (10.6.6)
  • matthewadams Calculating status...
    Currently Being Moderated
    Mar 18, 2011 11:28 AM (in response to entropic23)
    My temporary workaround is to disable "Automatic Graphics Switching" and let the machine run on the Radaeon all the time since it's plugged to a power outlet anyway.
    Macbook SR, Mac OS X (10.5.1)
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