Thunderbolt (Mini DisplayPort) to VGA doesnt support Full HD Properly?

Hello,
Last month, I've bought a MacBook Pro 15" 2011 Model with 2.2Ghz Intel i7 2nd Generation with AMD 6750M. I've also got a Mini DisplayPort to VGA adapter in order to connect it to my FULL HD Samsung 23" monitor.  The display works fine but there is a lot of flickering going on.  Also whenever I set the screen resolution to 1920 x 1080, the screen gets shrinked and moves to the sides.  Half of the screen is beyond the limits of the display ,that is, i cant see the left half of the display.  I've tried changing the monitor setting also but no use . Tried connecting it to windows (using BootCamp) but still the result is the same. All other resolutions work well but the native resolution of the monitor is 1920 x 1080, So i'm in dire need of it...Please help

By any chance were you using a VGA->DVI adapter when trying to use the Mini-DisplayPort->VGA adapter? As in Mini-DisplayPort->VGA->DVI?
I had trouble with this. I found going straight to Mini-DisplayPort->VGA or Mini-DisplayPort->DVI worked perfectly but once I added a VGA->DVI or DVI->VGA adapter to the chain the screen would be detected by OS X but the monitor itself would give the "No signal detected" message. I tried all these combinations on the same monitor.
Not sure if it helps your situation but I have noticed some similar issues.
EDIT: Oh, and I have the new MacBook Pro 15inch with Retina all fully updated. I noticed that with my late-2009 White Macbook didn't have this issue with the cables and adapters.

Similar Messages

  • Does Mini DisplayPort to VGA adapter support DDC/CI?

    I have a Mac Pro and a MacBook5,1.
    Mac Pro is attached to a BenQ monitor which supports DDC/CI communication.
    With a capable software I'm able to set brightness and contrast of the monitor without using monitor's OSD (thanks to DDC/CI communication).
    If I attach the same monitor to my MacBook5,1 with VGA cable through a Mini DisplayPort to VGA adapter, DDC/CI stops working.
    I'm no more able to set brightness and contrast and the app reports that monitor isn't DDC/CI capable.
    I'm sure its not an issue related to the app that I'm using to set brightness and contrast. It detects correctly both of the monitor (the internal and the external one) and I'm sure that I'm sending DDC/CI commands to the external monitor and not to the internal one.
    So, does Mini DisplayPort to VGA adapter support DDC/CI, and therefore passthrough its signal?
    Or is it a problem of MacBook and its Mini DisplayPort which does not support DDC/CI at all? I don't think so.
    I hope you can help me.
    Regards
    Andrea

    No. Unlike DVI, which in the DVI-I configuration has both digital and analog pinouts, DisplayPort (and mini-DisplayPort) are purely digital. Mini-DP to DVI then DVI to VGA will not work. If you look carefully at the Apple Mini-DisplayPort to DVI adapter, you'll notice it's a DVI-D connector - digital pins only.
    The Apple mini-DisplayPort to VGA adapter contains a digital-to-analog converter.
    So, you'll have to choose. If you want VGA, get Apple's mini-DisplayPort to VGA adapter.

  • Thunderbolt display: devices not discovered after using Mini DisplayPort–to–VGA adapter

    I have an interested problem related to using my MacBook Air in clamshell (closed) mode, connected to a Thunderbolt display. The problem appears to be related to moving my MacBook air between my office and my home.
    At the office, I use the MacBook Air with an external VGA display, connected via the Mini DisplayPort–to–VGA adapter. At home, I use the MacBook Air together with a Thunderbolt display. An Apple USB keyboard is also connected to the display.
    Mini DisplayPort–to–VGA adapter implicated
    The following sequence of events causes the problem to occur:
    Use the MacBook air (open) together with a VGA display, connected via a Mini DisplayPort–to–VGA adapter (depicted at right);
    Put the MacBook Air to sleep by closing the lid, and disconnect the Mini DisplayPort–to–VGA adapter (I am not sure if the order of these two steps is significant—I usually perform them almost simultaneously when packing up my MacBook Air and getting ready to leave the office); and
    With the MacBook Air still closed, connect it to a Thunderbolt display with a connected USB keyboard.
    At this point, I would expect to be able to wake up the MacBook Air by tapping on the space bar of the keyboard. However, what I have observed is that this does not wake the MacBook Air.
    I can wake the MacBook however by moving or clicking a Bluetooth mouse that is paired with the MacBook Air.
    At this point, although the MacBook Air is awake, and the display is working, the USB keyboard connected to the display still does not work. This is the problem, in a nutshell.
    Unplugging the USB keyboard from the display, and plugging it back in causes the MacBook Air properly to identify the keyboard.
    I used Apple System Profiler to save a list of identified devices at two points in time:
    Immediately after waking the MacBook Air by moving the Bluetooth mouse (at which point the USB keyboard was not working); and
    After unplugging and plugging in again the USB keyboard (at which point the USB keyboard worked fine).
    Many devices are enumerated in the second list that are missing from the first. For example:
    Keyboard Hub@fe110000  <class IOUSBHubDevice, id 0x1000378ef, !registered, !matched, inactive, busy 3 (37993 ms), retain 6>
    AppleUSBHub  <class AppleUSBHub, id 0x1000378f2, !registered, !matched, inactive, busy 1 (37987 ms), retain 6>
    IOUSBInterface@0  <class IOUSBInterface, id 0x1000378f4, !registered, !matched, inactive, busy 1 (37986 ms), retain 6>
    Keyboard Hub@fe110000  <class IOUSBHubDevice, id 0x1000378f6, registered, matched, active, busy 0 (7 ms), retain 10>
    AppleUSBHub  <class AppleUSBHub, id 0x1000378f9, registered, matched, active, busy 0 (1 ms), retain 9>
    IOUSBInterface@0  <class IOUSBInterface, id 0x1000378fb, !registered, !matched, active, busy 0, retain 7>
    Apple Keyboard@fe112000  <class IOUSBDevice, id 0x1000378fd, registered, matched, active, busy 0 (112 ms), retain 11>
    and many child devices…
    Using the Mini DisplayPort–to–VGA adapter appears to be a necessary step to causing this problem to occur. If I merely disconnect the MacBook Air from the display, let it go to sleep, and then reconnect it again, the USB keyboard will work immediately and can be used to wake the computer from sleep.
    Some devices are discovered even when the computer is in sleep mode. This is how it should work.
    The problem appears to be that when a Mini DisplayPort–to–VGA adapter has been used since the last time the computer was connected to a Thunderbolt display, the MacBook air does not discover devices completely when it is again connected to the Thunderbolt display while in sleep mode.
    Can anyone else reproduce this problem?

    Hi glraczon.support,
    It sounds like the external display you are using (projector) operates at a smaller resolution than your MacBook Pro. You may want to configure the display preferences in System Preferences for the external projector.
    Here is an article that may help you with that process:
    OS X Mountain Lion: About the Display pane of System Preferences
    http://support.apple.com/kb/HT5369
    Thanks,
    Matt M.

  • Mini-Displayport to DVI adapter not working, but Mini-Displayport to VGA and Thunderbolt work fine

    Mini-Displayport to DVI adapter not working, but Mini-Displayport to VGA and Thunderbolt work fine.
    This is a brand new MacBook Pro (15-inch, mid-2012) just received.  I suspect that this is a hardware problem as:
    The mini-displayport to DVI adapter and the external monitor that I am utilizing connect and operate just fine using my older MacBook Pro (mid-2010) with the same OS.
    The new MacBook Pro powers the external monitor with a mini-displayport to VGA adapater without issue.
    The new MacBook Pro powers an Apple Thunderbolt display without issue.
    Both MacBook Pro's are running OSX Lion 10.7.4.
    The only combination which does not work is the mini-displayport to DVI adapater used in conjunction with the brand new MacBook Pro (mid-2012).
    All adapters and components (mini-displayport adapters) are Apple retail adapter.
    I have tried several external monitors, including my Dell U2412m.
    When I connect the mini-displayport to DVI adapater to the new MacBook Pro (mid-2012), nothing happens. The external monitor reports "no signal" and attempts to go into sleep mode.  Using the "Detect displays" button has no effect, even when used multiple times.  Rebooting does not help, nor does resetting the SMC or PRAM.
    Any other suggestions before I take it to the Genius Bar?

    I turns out that the logic board of my MacBook Pro was faulty (despite being brand new).
    I took it to the Apple Store, presented the problem, and one of the Tech's came to the same conclusion that I had -- hardware failure.  Phone support was no help in the matter (and even told me that what I was trying to do wasn't a supported option, which is rediculous).  However, the Genius Bar did take care of the problem, and my MacBook Pro was back to me with a replaced logic board within a few days.
    Hope that htis helps.

  • Mini-DisplayPort to VGA adapter & other thunderbolt devices

    I currently use the mini-DisplayPort to VGA adapter so that I can work on a large external vga monitor.
    Will this work if the adapter terminates the chain or will I need to connect the adapter directly to the laptop thus preventing me from using any thunderbolt devices?

    I was just thinking.. It is possible that belkin is support the miniDisplay in that port as well.
    Yeah, that was my thinking as well...
    The matrox dock is going to have DVI on it, but it doesn't support chaining (i.e. it only has 1 TB port)
    Does your external monitor support DVI - let me go look at the Matrox - ugh - don't like it compared to the Belkin.
    They're BOTH expensive and, as I don't believe that either is shipping, I'd have to wait on someone else to do the beta testing.
    I've never tried a USB>DVI adapter - here are a few from my favorite adapter/cable company, though.
    Good luck,
    Clinton

  • HT3382 With a MacbookAir (mid-2012) using a mini DisplayPort to VGA adapter plugged into the Thunderbolt port, can you configure the external monitor to FULLY display in portrait mode yet keep the built-in display in landscape mode?

    With an 11"-inch Macbook Air (mid-2012) using a mini DisplayPort-to-VGA adapter plugged into the Thunderbolt port:
    Can you configure an extended desktop with an external monitor (20") displaying full portrait mode (1200 x 1600 resolution) and keep the built-in display in landscape?
    I'd like to see something like
    External monitor / Built-in display

    Yes, I can't see why not.
    Just give it a try and report back if you have a problem.

  • HT4617 Even though thunderbolt is not hot puggable in Bootcamp, is the use of mini displayport to vga/dvi still hot pluggable under Bootcamp?

    Even though thunderbolt is not hot puggable in Bootcamp, is the use of mini displayport to vga/dvi still hot pluggable under Bootcamp?

    This is Apple support on the subject
    http://support.apple.com/kb/HT4617
    Can I plug and unplug devices into a Thunderbolt peripheral that is already recognized?
    Yes. That is the best way to add and remove devices from the Thunderbolt chain while Windows 7 is running.
    Have you tried?

  • Does Mini Displayport to DVI adapter support analog VGA signal?

    I'm just about to buy a macbook pro. Since the MDP (mini displayport) to DVI and MDP to VGA adapters are £20 a pop, I can only afford to get one. Obviously DVI is better in general, but VGA supports more older hardware, CRTs, and the spare VGA input on one of my displays (where the desktop uses the DVI).
    What I'd like to know is does the MDP to DVI adapter also support the analog VGA signal on certain pins (like most physical desktop DVI ports do)? If it does, since I have about 3 or 4 DVI to VGA adapters lying around, I can get the MDP to DVI adapter and use the DVI to VGA adapters with it if necessary, but if it doesn't I might be better off getting the MDP to VGA...

    No. Unlike DVI, which in the DVI-I configuration has both digital and analog pinouts, DisplayPort (and mini-DisplayPort) are purely digital. Mini-DP to DVI then DVI to VGA will not work. If you look carefully at the Apple Mini-DisplayPort to DVI adapter, you'll notice it's a DVI-D connector - digital pins only.
    The Apple mini-DisplayPort to VGA adapter contains a digital-to-analog converter.
    So, you'll have to choose. If you want VGA, get Apple's mini-DisplayPort to VGA adapter.

  • HT3492 What do I need to do to use the iMac as a monitor from my HP laptop? I have my HP connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

    What do I need to do to use the iMac as a monitor form my HP laptop?  I have my laptop connected to the Mini DisplayPort to VGA adapter which is plugged into a Thunderbolt port.

    vga may not be a compatible port
    https://discussions.apple.com/thread/2246912?start=0&tstart=0
    more hits
    https://www.google.dk/search?source=ig&hl=da&rlz=1G1TSEH_ENDK367&q=use+imac+as+m onitor+for+pc&oq=use+imac+as+mon&gs_l=igoogle.3.0.0l10.2417776.2420497.0.2421354 .15.11.0.2.2.0.316.1723.0j4j3j1.8.0...0.0...1ac.-OkFwmTKBg0

  • What cable do I need to buy to connect my Macbook Pro (2011) to a VGA screen? I tried the "Mini DisplayPort to VGA", but apparently it doesnt fit the 2011 Pro version...

    As the topic says,
    What cable do I need to buy to connect my Macbook Pro (2011) to a VGA screen? I tried the "Mini DisplayPort to VGA", but apparently it doesnt fit the 2011 Pro version...
    Help me out please.

    Yes ... minidisplay
    But what I do not like in that picture (my personal view, others may think differently), is that there is much plastic around the connectors where the cable must fit.  You may ot may not be able to get the cable to *fully seat* with the adapter.
    Other adapters (http://www.microcenter.com/single_product_results.phtml?product_id=0334087, yes I know this is a DVI) hve no plastic barriers to connections.

  • Mini DisplayPort to VGA Adapter won't work on thunderbolt port

    Hello
    I bought 2 new Macbook Pro 13' , 2.9 Ghz Intel Core i7, with 8 Go 1600Mhz DDR3,  Intel HD Graphics 4000 512 MB, Mac OS X Lion 10.7.4 (11E2617).
    I have connected a Mini DisplayPort to VGA Adapter in order to show presentations on different LCD projectors but  no image appear.
    The external monitor is detected but no image is shown. I have tried to change the frequencies: parts of the screen appears but no a correct image. I have the same symptoms with the 2 Macbook Pro. Using old Macbook Pro with the same Mini DisplayPort to VGA Adapter, the slides are showns normally.
    I make a test with a Mini DisplayPort to DVI Adapter and with a Mini DisplayPort to HDMI Adapter and everythings works correctly with both adapters.
    Does anybody has a solution?
    Thank in advance for your help
    Philippe

    By any chance were you using a VGA->DVI adapter when trying to use the Mini-DisplayPort->VGA adapter? As in Mini-DisplayPort->VGA->DVI?
    I had trouble with this. I found going straight to Mini-DisplayPort->VGA or Mini-DisplayPort->DVI worked perfectly but once I added a VGA->DVI or DVI->VGA adapter to the chain the screen would be detected by OS X but the monitor itself would give the "No signal detected" message. I tried all these combinations on the same monitor.
    Not sure if it helps your situation but I have noticed some similar issues.
    EDIT: Oh, and I have the new MacBook Pro 15inch with Retina all fully updated. I noticed that with my late-2009 White Macbook didn't have this issue with the cables and adapters.

  • Mini DisplayPort to VGA Adapter-is it reliable?

    I have to give a Keynote presentation with my 13" 2009 mid year Macbook Pro, and planned on using an Apple mini displayport to VGA adapter, to connect to the projector. The reveiws I've read about this adapter are pretty dismal. Apparently, they burn out very quickly or just plain fail to work! How risky is this? What are my options?
    Thanks in advance for any advice!

    my thunderbolt to HDMI set up has failed a few times. Adapters are gonna fail. I've had great luck with a company called "moshi"  They've had great support as well. Hope this helps, cheers!

  • Mini DisplayPort to VGA blurred

    I'm using an early 2012 MacBook Pro 13 inch with a ViewSonic VG2230wm monitor using a Mini DisplayPort to VGA adapter plugged into the Thunderbolt port.
    The resolution of the external monitor is set to 1680 x 1050 which is the recommended but the quality of the image is poor.  All text on webpages and documents has a slight shadow on it and is visibly poorer than the built in display on the MacBook.
    My question is will I get a better result if I use a Mini DisplayPort to DVI adapter instead of VGA?  The monitor supports both.
    Is there a better way of getting a crisp clean image on my external monitor?
    Thanks,
    Paul.

    Edit:  I've just tried the same monitor and adapter on my Mac Mini with the same results.  The picture still looks slightly blurred and with a shadow.
    The Mac Mini also has a Mini DVI port and when I use a Mini DVI to DVI adapter on the same monitor the picture is nice and crisp.
    Will switching to a Mini DisplayPort to DVI fix my blurred vision?!?

  • New 13" Macbook Pro trying to connect to a Panasonic VIERA TC-L42U30 as second monitor. I've used multiple hdmi-thunderbolt/mini displayport adapters and multiple hdmi cables and still no success. The Macbook does not sense the second monitor (TV). Help?!

    I've been a Mac since 2008, so I know my way around the system pretty well. This issue, however, has me stumped. I had an iMac until now and only now am I experiencing some difficulty with my new MacBook Pro. The model I have is the newest 13" Macbook Pro model and I'm trying to connect a Panasonic VIERA TC-L42U30 42" HDTV as a second monitor via the Thunderbolt port.
    It worked the first two times and hasn't worked since, after 10-15 attempts with different configurations, turning things on n off, restarting the mac, unplugging the cables, adapters, TV, resetting the P RAM, etc... I've used multiple hdmi-thunderbolt/mini displayport adapters and multiple hdmi cables and still no success. No matter what I do, the Macbook does not sense the TV as a second monitor anymore.
    I took the MacBook Pro to the Apple Store, and their "genius" there had it working fine with a DVI connection to a regular monitor. The Panasonic TV I have has HDMI connections and one VGA connection which does not support HD, but no DVI option. I want an HD connection to mirror or extend my MacBook Pro screen. At the Apple Store, they didn't have a Thunderbolt/Mini DisplayPort to HDMI adapter, so he could not try that out for me.
    Anyone else have this configuration or another similar one with a Panasonic HDTV?
    Ideas? Suggestions? Anything?! Help!!
    P.S. I'm running Mountain Lion, if that wasn't already obvious. Everything is up to date in my App Store as well.
    Thanks!

    Hi There,
    I have had the exact same issue but with a projector.
    The issue lies with Mountian Lion 10.8.2.
    I tried many a combination with no luck to get HDMI working.
    Took my mac into the apple store and came to the conclusion it was the software, so I asked them to install 10.8 onto it (this is destructive so a backup is a must)
    Bought my macbook home and voila, now displaying through my projector.
    There is a small graphics update after 10.8.1 which seems to be the cause.
    Hope this helps.
    Thanks.

  • Apple Mini DisplayPort to VGA Adapter flickers

    I have 2 Samsung SyncMaster 23 in, HD Displays connected to my Mac Mini. The Display connected via the Mini DP to VGA adapter flickers erratically. This started happening after installing the latest upgrade of OSX Mountain Lion. I called Apple support, they gave me a list of steps to try to fix the problem, which I followed to the letter, to no avail. The problem is annoying, to say the least. I tried to find out if there was a firmware update for the adapter, but I am running the latest firmware (1.03).
    I would appreciate any help to solve this issue.

    Thank you for your message.
    1. Both monitors only have VGA input.
    2. The other adapter, Mini-DVI to VGA has always worked properly.
    3. The Mini DisplayPort to VGA adapter is an Apple original product I bought at an Apple store. I bought 2 adapters.
    4. Actually I have 2  Mini DisplayPort to VGA adapters: The one I use with my Mac Mini, and another adapter I use to connect my Mac Book Pro to a Panasonic projector.
    5. I have tried using both adapters, and the flickering problem is present using either adapter.
    6. I believe the flickering problem is definitely something that needs to be addressed and solved by Apple. The adapter is its product, and should work as advertised, no matter what version of OSX I am running. Please remember that there was no flickering before I upgraded to the latest OSX Mountain Lion.
    7. I do not believe buying an adapter from another manufacturer, as you suggest, would solve the problem.
    Thank you for your help.

Maybe you are looking for

  • How do i download my PHP site and edit it with Dreamweaver CS5?

    I have followed the instructions and installed MAMP for mac. Connected and downloaded the entire site. When i open the index.htm file it appears with a URL for the main website. When i place it in live view the website code and design appear, but i c

  • ST-PI plug- in

    Hi SAP, We are planning to do ST-PI plug in upgrade in ECC for theTechnical preparation of GFLUV Session, do u think that do  we have to do any preparations on the BW side. Also I dont think BW extractions will be affected, any advices. Kindly please

  • Low Power - No Warning

    I have a 15.4 " MacBook Pro. I've had it for several months now. For the first few, whenever the battery charge dropped to about 4 or 5 minutes, a warning would pop up on the screen. It told me the computer was about to resort to reserve power and I

  • 1 policy-map for more than 1 physical interface

    Hi, the situation I want to achieve is, that 2 physical interfaces (here 2 TP GigbitEthernet Ports of a 3750) are limited together from one 'service-policy'/'policy-map'. In the example below I have 2 Ports on one switch and the traffic coming in on

  • Combining war files

    Hi, is there any ways to combine add stuff from other war files to existing project??? Thanks alot for help!!