• 3.0 out of 5 stars

    Firmware Version 1.03 does not eliminate "flickering snow" problem

    I tried this adapter with a NEC PA271W monitor. I am using a 17" MacBook Pro (2011 model, 8GB RAM) with OSX 10.6.8. Initially, I was experiencing the "flickering snow" problem about 25% of the time when my computer woke from a sleeping state.

    It was very frustrating to have to cycle the monitor off and back on or to unplug it from the computer and then reconnect it so often to clear up the display.

    It was able to reduce the frequency of the problem by connecting a USB cable between the monitor's Upstream USB Port 1 and the USB port on the Adapter. But this did not eliminate the problem.

    NEC tech support sent me a Mini DisplayPort-to-DisplayPort cable (NEC Part Number PA-MDP-CABL, price $29.99). They also instructed me to connect an A/B USB cable between the monitor's Upstream USB Port 1 and the computer.

    So far, this has fixed the problem.

    This cable does support the Monitor's highest resolution, 2560 x 1440, 60 Hz.

    I do not know how well this particular cable will work for non-NEC monitors. There is a latch on the end of the cable that locks into the DisplayPort on my NEC monitor. I do not know if the DisplayPort connections on monitors from other manufacturers have the same fitting.

    19 of 21 people found this useful

  • 3.0 out of 5 stars

    Can't play rented iTunes content, and shows "snow" on blacks

    This adapter lets me connect my mid-2011 (Thunderbolt) MacBook Air to my old 30" Apple Cinema Display. It works for the most part, but it has significant flaws:

    1. Pure black areas show a little "snow" on the Cinema Display.

    2. The adapter doesn't seem to support HDCP, which means I can't rent a movie in iTunes and play it back on the 30" display. This is annoying given that I'm using an all-Apple setup, and renting iTunes content! (This does not seem to affect purchased iTunes video content, though -- just rented video content.)

    Neither is a deal-breaker, but both are annoying.

    20 of 21 people found this useful

  • 3.0 out of 5 stars

    New cable with Firmware 1.03 did the job!!!

    Followed the advice of entry: Aug, 2011 from MK Atlanta. I "Screen grabbed" (Cmd + Shift + 4) and printed MK's entry, and information about my Mac's hardware, which showed that I had a old 1.02 firmware cable. Took all the printed information and old cable to Apple store and they exchanged it, no problem. We weren't able to test it as the store was packed and everyone was using the monitors and laptops etc. But as soon as I got home, connected the new cable no problems, no snow, no flickering....Halleluiah!!! Why can't they post this, or send us an update? My new Subaru has had some computer updates since I bought it in February..... I get a letter, take it in, update, end of story. (note: I have a mid 2010 MacBook Pro)

    27 of 28 people found this useful

  • 3.0 out of 5 stars

    Works, but then not completely

    The noise in black when connecting a MacBook Pro to a 30" Cinema Display seems to be a 50/50% occurrence, yet nobody at Apple Support or at Apple Dealers know about this or what to do about it.

    It's quite odd that Apple hasn't sent out a replacement program for the default ones of these. Seems like a subcontractor that made an error, yet you feel that you have to convince Apple folks about that the problem exist.

    8 of 9 people found this useful

  • 3.0 out of 5 stars

    Works fine but so pricey

    Seems to work without any issues so far described by others. I am just very surprised that my adapter has firmware 1.01 even though this seems very old and supposed to not work. Hence only three stars as it is very expensive and with outdated firmware.

    16 of 16 people found this useful

  • 3.0 out of 5 stars

    stop working after OSX upgrade from 10.6.2 to 10.6.3

    My cinema 30" display worked fine with this adaptor on my macbook pro 17" (late 2009) up until I upgraded my OSX to 10.6.3 , upgraded again to 10.6.4 and in both cases external display is not detected

    24 of 28 people found this useful

  • 3.0 out of 5 stars

    flicker and other issues

    I have a MBP w/NVIDIA GeForce 9400M/GT video cards connect with this adapter to an LG W3000H. The monitor flickers, and if I turn my monitor off, when I turn it back on, I see the image, but it's snowy (very hard to see). I have to unplug the mini displayport, wait a few seconds and plug it back in.

    From system profiler, it looks like I have version 1.01. I plan to go back to the apple store to try to get version 1.03 which folks in this forum suggest fixes many issues.

    Does anyone know if we order directly from apple, if it's possible to get fw v1.03?

    10 of 11 people found this useful

  • 3.0 out of 5 stars

    Hybrid rating: Replacing adapter fixed problem

    Rating is 5 stars for eventual performance, 1 star for putting many defective adapters on the market and making me (and many others posting comments here) deal with this. Average rating then = 3 stars.

    I have one of the original Apple 30" Cinema Displays which has worked flawlessly for over 5 years with multiple Macs. It has the original full size DVI connector on the end of the cable. When I recently upgraded from a 2006 MBPro to a 2010 MBPro I had to buy the dual link DVI mini displayport adapter to drive the 30" to full 2560x1600 resolution. The first adapter created the horizontal video lines on the 30". They would appear only in areas displaying dark colors. Apple Support (phone call) had me unplug EVERYTHING except for the monitor. They had me reset the PRAM (power-command-option-P-R for 2 sec) and then reset the SMC (shift-control-option-power) to no avail. So we made a Genius Bar appt and I took the adapter and my new MBPro back to the local Apple Store. We plugged my MBP and this adapter into one of their new 30" Cinema Display HD monitors in the store. Of course, everything worked perfectly.

    After some head scratching and no satisfactory explanation, they swapped out the adapter for a new one and sent me home to try out. If it still didn't work I was prepared to go back with adapter, MBPro, and my 30" monitor. Luckily, It worked fine when I hooked up everything at home. So take your adapter back if you see these horizontal video lines appear. It solved my video noise problem, it may solve yours.

    21 of 22 people found this useful

  • 3.0 out of 5 stars

    this cable work on my NEC 30" 3090

    just bought this cable plugin from my new mac mini to NEC 30" multsync 3090 monitor. It works so far without any problem.
    No flick
    No noise
    No problem after sleep.
    The 2460x1600 res is very detail and line is very sharp and fine showing on my monitor.
    Before I bought this cable, I had tried this cable with a apple cinema 30" in an apple store also no problem.
    I think it does the job..

    I don't like just it is too expensive but 30 " with 2460 res need this so I have no choice and I don't even know what else cheaper can replace this.

    Also not many staff in apple store I have been know this cable well.
    I heard someone can't get this cable work is because the firmware of this cable is not 1.03. Also no one in apple store can confirm to me the one I bought is 1.03 or not.

    Luck I have my one work and I think my one is the latest firmware

    15 of 16 people found this useful

  • 3.0 out of 5 stars

    Flicker = Power Issue

    Great intentions for this apparently quick fix solution. Yeah, for what is rare to happen, Apple botched a bit on this extension. I can't complain in the end though because at least it works as desired.

    USB on almost every class of machine have the tendency to have power related issues. Devices that have a separate power adapter don't have to rely on this voltage. Bus powered devices are all trying to pull the voltage they need. In this case v1.02. If for any reason you get power fluctuations, your monitor will flicker, have issues, or not work at all.

    The Fix, plug the USB cable that is on the Y with the Mini DisplayPort and plug it into an external powered USB Hub that has its own power adapter.

    Don't have a powered USB Hub? No problem. Try using the 2nd Monitor's built in USB Hub. Plug the USB from the Y and plug it into your iMac and then take the USB out from the Mini DisplayPort to Dual-Link DVI Adapter and using a iPod/iPhone power cable and plug it into a Wall outlet for AC.

    Not sure any other way of doing it is worth it. Still glad I got it because there isn't really a better solution out there at this time.

    30 of 32 people found this useful

  • 3.0 out of 5 stars

    It's a power issue

    Folks - 2 simple steps to make this work
    1. verify you have v1.02
    2. plug adapter's usb into a ipod/iphone ac power adapter and plug that into ac

    27 of 28 people found this useful

  • 3.0 out of 5 stars

    Finally Working. Pricy.

    Finally working under the following condition. Price is too high. Should be $30.

    Gefen DVM KVM DL Switch
    Dell 30"
    Macbook Pro 2.53 9400M GT
    OS 10.6.2
    Dual-Link DVI Adapter Firmware 1.02

    9 of 9 people found this useful

  • 3.0 out of 5 stars

    Works for me, but has some display issues

    I was also scared off by the reviews, but since this was really the only option available to connect my 24" iMac to my 30" Cinema Display (which I already owned and previously used with a PowerMac G5), I decided to bite the bullet and order it.

    Luckily, it works, and for the most part, works well. The image quality is very good and I love having two big high quality monitors for apps like Aperture, Photoshop and Final Cut Express.

    However, I'm a tad disappointed that there are flickering horizontal pixels lines visible in the dark areas. The lines are usually red, but occasionally other colors and seem to appear toward the bottom of the screen most frequently. If I set the background to pure black, they are more visible throughout, but under normal use, it's not noticeable enough for me to return it...especially since I have no other option.

    If I can find a way to fix this, I'd give it 4 or 5 stars, but as is, it's just an average 3 for me.

    26 of 29 people found this useful

  • 3.0 out of 5 stars

    A bit on the inferior side

    I have 2 setups with unibody MacBook Pro and 30" Apple monitor. I'm on the phone with Apple right now switching out the cable for the 2nd time. Works fine for a couple of months and then, launch up to a non-working monitor. By process of elimination, we've deduced it is the cable that is faulty. Going on my 3rd cable now. Kinda blows!

    18 of 22 people found this useful

  • 3.0 out of 5 stars

    Flicker

    New 17" Macbook Pro and 4 year old 30" Cinema Display. I have my display set to "Higher performance" in the Energy Saver preference pane.

    When displaying large areas of black on the Cinema Display there is clearly flickering horizontal lines. I once tried unplugging and replugging in the connector and the flickering was a bit less. But I do plug the adapter in virtually every day since I commute with the laptop. Generally speaking it will flicker when displaying black areas.

    I will probably try to return it for another one to see if it varies.

    I can live with it if there is no fix as the flicker is only there in black areas.

    17 of 19 people found this useful

  • 3.0 out of 5 stars

    Initial problems now solved with Dell UltraSharp 3007WFP-HC

    I had the same problem as anyone else with flickering and bad noise intermittently. It got so bad at some point that every switch back and forth with my Dual DVI KVM switch screwed up my display.

    What finally solved my problems was to connect the usb cable directly to the usb hub in my Dell UltraSharp 3007WFP-HC monitor. As another review states here the problems seem to have to do with the quality of the power that the usb cable receives. Apparently my monitor does a good job with that.

    13 of 17 people found this useful

  • 3.0 out of 5 stars

    Buy this adapter or they'll kill your dog

    I initially purchased the single channel adapter not being aware of the 1280x800 signal limitation. I returned to the store (without packaging, but with receipt) and explained that it was unlikely anyone on the planet would benefit from the single channel adapter, and the staff agreed. I was given full credit for the single channel and purchased the dual.

    It worked as expected, and I am running 2560x1600 w/millions of colours. No flicker, no warbles. Samsung 30 inch SyncMaster 305T.

    So why a 3 star rating? Because it is a solution after the fact. My old MBP had a DVI port on the side and ran this monitor just fine. Exactly how is this Mini DisplayPort suppose to benefit me? There is a high PIA factor plugging two cables where prior I had one and now I have 3 feet of cable and a box the size of a deck of cards on my desk.

    So in summary.. If you are reading this, chances are that you already purchased a new laptop and are trying to solve your display problems. Go ahead and buy it.

    19 of 27 people found this useful

  • 3.0 out of 5 stars

    Got a Fix to the Flickering Issue for MacBook Pro

    Had the same problem that everyone else seems to have, but got a fix from the apple store:

    For the MacBook Pro (15", unibody)

    1) Open System Preferences
    2) Open Energy Saver
    3) Check the button for Higher Performance.

    The issue disappeared and everything is working fine now.

    7 of 12 people found this useful

  • 3.0 out of 5 stars

    Mostly works

    I was glad that it has a USB pass-through because I really didn't know how I was going to handle even one less USB port on the laptop. Still I need a hub because the 30" Applemonitor only has 2 ports.

    As for the quality of the device, it works most of the time. Every couple of hours it will blink a blank screen for a fraction of a second. I can deal with that.

    I really just want a 30" version that uses the display port natively and has more USB ports. But I'll have to wait and see if Apple makes one.

    9 of 15 people found this useful

  • 3.0 out of 5 stars

    Sync fix

    I experienced the out of sync issues about 3-4x a day. What I've found works every time is going in to display preferences and changing the resolution down to 1280x800 and then back to 2560x1600. It seems to reinitialize the screen that way and fix it. Since that works it is probably a software issue and should be corrected in a software update. I'm hooked up with an aluminum Macbook to a Dell 3007wfp-hc.

    24 of 24 people found this useful