Disappointed in Cinema Display...

Perhaps it's just the way of flat screen monitors, but I just bought a 20" cinema display and I have to say it's pretty disappointing. Graphics look pretty good but text looks like somebody smudged it with their thumb. Even the Apple logo that comes on when you boot up looks really low res, especially compared to my old VGA monitor. Plus -- you'll probably think I'm crazy -- but the whites are so bright it hurts the eye after a while to look at it, like staring at a light bulb. I wish there was some way to tone down the brightness. Anyway I went to Best Buy and looked at other displays and none looked all that sharp, so I guess that's the way of the world these days.
Am I the only one who thinks these flat panels are overrated?
Scott
G4 Mac OS X (10.4.9)

The smudged looking text may be because of the anti-aliasing or font smoothing. LCDs are generally so sharp compared to a CRT you can see the individual pixels that make up each character. This can also lead to a jagged appearance for characters containing diagonal lines, for example, an upper case 'A'. Anti aliasing or font smoothing attempts to correct this but can result in soft or fuzzy looking text. You can adjust the amount of smoothing applied or switch it off entirely for smaller font sizes using the Appearance(?) system preference. There should be an option 'Medium - best for flat panels'.
The Apple logo is low res, but perhaps deliberately so, as it has to cater for the lowest resolution screens. I think the resolution in general switches during the blue screen when the OS starts loading. You also need to run the display at it's native resolution (and hence need a graphics card capable of supporting it).
As for the brightness, the default setting is too high for me as well but it should be easily adjustable via the relevant system preference. Lowering it may also increase the longitivity of the back light.

Similar Messages

Hello everyone, hoping for some help with my new Apple Cinema Display 20"

Hi everyone, I bought an Apple Cinema Display 20 inch LCD monitor, just about 3 weeks ago. I have two issues I am hoping to get some help with.
1) I am using the screen on a PC with Windows XP, and I was very disappointed at the lack of PC support. I have no on screen display (OSD), so I can't see what percentage I have my brightness set to, and I can't alter the colour or contrast of the display, etc. Luckily it defaulted to very good settings, but I would really like to be able to use the (fan made?) program called "WinACD". If I would be best asking somewhere else, please direct me there. If not, my problem is that I installed it added the "Controls" tab, but it just says, Virtual Control Panel "None Present". I have tried googling for an answer, and I have seen many suggestions, but none of them worked. I installed the WinACD driver without my USB lead plugged in, and someone said that was important. So I have tried uninstalling, rebooting, then reinstalling it again with the USB plugged in, and a device plugged in to my monitor to be sure. It didn't seem to help. I have actually done this process a few times, just to be sure. So I would really like to get that working if possible.
2) I am disappointed at the uniformity of the colour on the display. I have seen other people mention this (again, after a google search), and that someone seemed to think it is just an issue we have to deal with, with this generation of LCD monitors. Before I bought this screen, I had an NEC (20wgx2), and it had a very similar issue. Most of the time, you cannot see any problem at all, but if you display an entire screen with a dark (none prime) colour, like a dark blue green colour, you can see areas where it is slightly darker than others. It was more defined on the NEC screen, and that is why I returned it. I now bought this Apple Cinema Display, because it was the only good alternative to the NEC. (It has an 8bit S-IPS / AS-IPS panel, which was important to me). But the problem exists in this screen too. It isn't as bad thankfully, but it still exists... I have actually tried a third monitor just to be sure, and the problem existed very slightly in that one, so I think I am probably quite sensitive in that I can detect it.
It is most noticable to me, because I do everything on this PC. I work, I watch films, and I play games. 99% of the time, I cannot see this problem. But in some games (especially one)... the problem is quite noticeable. When you pan the view around, my eyes are drawn to the slight areas on my screen which are darker, and it ruins my enjoyment. To confirm it wasn't just the game, like I said, I can use a program to make the entire screen display one solid colour, and if you pick the right type of colour (anything that isn't a bright primary colour), I can see the problem - albeit fairly faintly.
I am pretty positive that it is not my graphics card or any other component of my PC, by the way, because everything is brand new and working perfectly, and the graphics card specifically, I have upgraded and yet the problem remains - even on the new card. Also, the areas that are darker, are different on this screen than on the other screens I have used.
So basically, I would like to register my disappointment at the lack of perfect uniformity on a screen which cost me £400 (over double what most 20 inch LCD screens cost), and I would like to know if anybody could possibly suggest a way to fix it?
It is upsetting, becuase although this problem exists on other screens too, this is, as far as I know, the most expensive 20" LCD monitor available today, and uses the best technology available too.
p.s. If anyone would like to use the program that lets you set your entire PC screen a specific colour, it is called "Dead Pixel Buddy", and it is a free piece of software, made by somebody to check for dead pixels. But I found it useful for other things too, including looking at how uniform the colour of the screen is. That's not to say I was specifically looking for this problem by the way... the problem cought my eye.
Thanks in advance!
Message was edited by: telelove

I've been talking about this on another forum too, and I made some pictures in photoshop to describe the problem. Here is what I posted on the other forum:
Yes, "brightness uniformity" definitely seems to be the best description of my issue.
Basically it just seems like there are very faint lines down the screen, that are slightly darker than the other areas on the screen. They aren't defined lines, and they aren't in a pattern. It's just slight areas that are darker, and the areas seem like narrow bands/lines. Usually you can't see it, but in some cases, it is quite noticeable. It is mainly when I'm playing a game. The slightly darker areas are not visible, and then when the image moves (because I am turning in a car, or turning a plane, or turning in a shooter etc.) the image moves, but these slightly darker areas stay still, and that makes them really stand out.
As for how it looks, I tried to make an example in photoshop:
Original Image:
http://img340.imageshack.us/img340/3045/td1ja9.jpg
Then imagine turning the car around a bend, and then it looks like this:
http://img266.imageshack.us/img266/959/td2hq7.jpg
It's those lines in the clouds. If you can tab between the two images, you can see the difference easily. Imagine seeing those lines appear, every single time you move in a game. (I haven't tested this in movies yet, but I am assuming it's the same).
It isn't very clear on a static image. But when the image moves, the darker areas stay in the same place and it draws your eyes towards them. It isn't terrible, but it is annoying, especially consider how much this screen cost.
Message was edited by: telelove

How to simulate windows pc monitors using a mac cinema display?

I occassionally have to produce jpegs to be posted on photographer's websites. These are high-end fashion images and the photographers are really picky about making them look good online with accurate hues, saturation, etc.
On my old iMac I used to 'preview' how they would look on a windows pc by simply changing my display profile to 'Generic Monitor' under system preferences. This worked pretty good and gave me results that matched the windows machines I have in my studio. However I just bought a Mac Pro with a 23" cinema display and for some reason this option is no longer availble, the closest thing in the Displays panel is now 'Generic RGB Profile' and testing this by comparing jpegs on my cinema display to those viewed on a windows laptop on the same desk I can see that this profile does not seem to come anywhere nearly as close to matching the contrast and saturation of crappy pc monitors.
Any one else had this problem? When I call apple tech support they seem very vague about what these profiles are actually meant to represent and why the very useful Generic Monitor profile is no longer present ("that monitor doesn't come with that profile, it's a professional monitor" one tech told me, obviously not understanding what I'm trying to do). This is kind of disappointing given that I've just spent over $6,000 on hardware that doesn't perform as well in this respect as my old iMac did.
Anyone know of a simple fix or somewhere I can download a profile that will work with my cinema display and mac pro? Any thoughts would be much appreciated.
PS - I am not very technical so I don't know if these profiles are in some ways connected with the graphic card, my mac pro has an ATI Radeon 2600XT and is running Leopard 10.5.1.
Thanks!

No, the saturation can't be adjusted during calibration. But the Cinema Display desn't have especially saturated colours. It matches the sRGB standard of most PC displays.
Cinema Displays are normal screens. Macs look different because the operating system adjusts the gamma to 1.8. There is nothing special about the monitor itself.
On the other hand, it will always look more saturated than a laptop screen. PC or Mac ...

Can't Use Cinema Display 30-inch With G5 (AGP)

After making a trip to the Apple store to make sure we got what we needed, and because we needed a monitor ASAP, we brought home a 30-inch cinema display. The people at the store assured us that even though they didn't carry it, we could easily find a graphics card that would support this monitor on a G5 that has only AGP and PCI. Turns out they were wrong. After spending most of the day, between the hour drive each way to the store and lots of searching on the Internet, we finally came to the conclusion that we need to return the monitor. There are currently no available AGP or PCI cards that support the 30-inch monitor on a G5. The few that do support it are either discontinued or out of stock indefinitely, even from their manufacturers. Even Ebay only has one or two that are certain to work (as there are apparently multiple versions of the Radeon 9600 Pro). Whatever video card you get, you must be sure it specifically supports Mac, since the Mac's video card requirements are apparently not standard.
So this serves as a warning, if you have a G5 you may or may not be able to use a 30-inch monitor. It is far from a sure thing, and definitely not something you can go out and buy and then just bring home and plug in. This was also my first (attempted) purchase at an Apple store (since we buy mostly mail order), and it was very disappointing. We got bad information, a product we can't use, and now two wasted 120-mile round trips. Actually the best advice we got from the Apple store was to buy another brand of monitor. We should have listened.

Thanks. I saw your post just in the nick of time. I read it while I was on the phone with the Apple store discussing their restocking fee. I'll have the card tomorrow and hopefully my problem will be solved. And I was also able to cancel my order for the other monitor as it had not shipped yet.
But I still think my warning is valid. This particular card is discontinued and OWC only has a few left. And as far as I can tell, no one else has anything compatible. So in the near future, driving a 30-inch monitor with a G5 without PCI-Express will not be a sure thing, and will certainly not be a one-stop shopping experience.
Interesting side note, the Apple store was going to waive their restocking fee because they could not find a compatible card for me. When I told them I just found one, they said OK and didn't even ask what I found or where I found it.
1.25 GHz G4 DP

DVI Adapter for LED Cinema Display Mini DisplayPort?

Is there an adapter for use with the new LED Cinema display port? I expect the new Mini's to switch to the Mini DisplayPort, if there is a new Mini, but in the meantime ...
Now that everything is going black, glass and aluminum, when is Apple going to update:
1) Keyboards to black keys?
2) Mouse to black and/or aluminum?
3) Mini, AirPort Extreme, Time Capsule to black & aluminum?
4) Power Adapters, Airport Express, cables, etc. to black and/or aluminum?
Finally a unified product line/look!

Woodwyn wrote:
Actually after thinking about it, the immediate solution is likely a short DVI extension cord combined with the Mini DisplayPort to DVI adapter. I would prefer a small Apple adapter to ship with the display however, much in the same way as the DB-15 adapter shipped with the VGA version of the old LCD Studio Display, or at least make one for sale. Guess Apple is leaving this up to third parties as usual.
The Apple Mini DisplayPort to DVI adapter would not work in this case as it is a male (Mini DisplayPort) to female (DVI) adapter. The new 24" Cinema Display has a non-removable cable ending in a male (Mini DisplayPort). As a male plug will not connect to a male plug it will not work.
I am sure soon enough various third-parties like Gefen, Griffin, and Belkin will come up with suitable adapters which do have the right genders. It is somewhat disappointing Apple have not done this themselves as I am sure plenty of Mac Pro owners are also salivating over this new display.
Arguably, Apple are repeating the same mistake they made with the ACD (Apple Cinema Display) connector and making it much harder and more expensive to use their displays with non Apple computers. That is they should have stuck with a standard DisplayPort connector rather than the esoteric Mini DisplayPort.
I equally hope someone comes up with Mini DisplayPort to (big) DisplayPort adapters as well.
On a totally different topic, I was also surprised and disappointed Apple did not switch to 16:9 displays for these new products (they are all still 16:10). The rest of the industry has already started switching to 16:9 displays and the clear trend is that 16:10 is on its way out. Still, the black border of these Apple displays does very conveniently hide the blank pixels (when playing a 16:9 video).

24' Cinema Display with Dead Pixel

I just exchanged an LED Cinema Display under AppleCare for the blinking/cord problem. Got the new one set up and see that it has a dead pixel. Is there a fix for these, especially being brand new, or do I have to exchange this one too?
Running tests it is very visible on a black background, then blue, and slightly on a green background. Red and white backgrounds make it so that the pixel is not a visible problem.

When I chose my LED Display, I refused two monitors because of dead pixels (green pixels on full filled white background). All of them I tried to order in on-line shops.
When I found out that Apple use LG panels for the LED Display and I understood that I have to go to the off-line shop and choose the display by myselfl. I met 2 years ago with usual LG TFT displays on my work - they all had dead pixels. (IMHO, LG is not good).
I came to one shop and there were 2 Apple LED displays - one at the exposition and one in the storehouse. Of course I wanted new one from storehouse and let manager know beforehand about not going to buy if dead pixels. He brought up the display from storehouse, unpacked, plugged and I personally start to check. I changed the background to whole white and pointed into two green pixels. "***", - I said to the manager - couldn't believe that the display costs crazy money (in Ukraine - $1400-1500) and everyone with dead pixels!
I also have 20" NEC display with perfect IPS panel that I bought 3 years ago for $800. And I should leave the buying of the Apple LED Display and back to my favourite and proven NEC it could be the right decision as you'll see below .
But the manager offer me to check the exhibition example - he assured me that exhibition one is also absolutely new and stood only 5 days in the shop. We plug it, set the background to white and ... "O, miracle! No dead pixels! After three checked displays! Can't belive!" - and this one was really total perfect.
So I forgot about to buy new NEC instead of Apple display. Brought Apple LED Display to home, connected to my brand new MBP 13, compared to my old NEC - everythnig was perfect, colors and overall picture are better than old NEC.
I was happy ... BUT JUST FOR ONE WEEK! It started to blink/flash/blackout - this is the known problem as I found out later: http://discussions.apple.com/thread.jspa?threadID=1902288&tstart=0
I'm very disappointed because I realize that if I give it for guarantee service and they offer me to change it - I'm sure that I'll got the display with dead pixels and I don't want it! So I hope that it the software/firmware trouble and it'll be fixed in the next MacOS update. If no - it'll be the disaster because I'll not be able to return the display and give my money back from the one hand (under Ukrainian laws the money back period of goods is 14 days), and I don't want to give the guarantee replacement with dead pixels!
Sorry for large text I had to to unburden myself!

ED Cinema Display - compatibility

At the point of buying a LED Cinema Display 24 inch.... I was disappointed to hear that this marvelous screen was not going to work with my Apple MacBook Pro from January 2008... I needed the newest version of my MacBook. No additional cables available....nothing.
Any ideas or news to be expected from Apple on this or can I just forget about the purchase untill I have "upgraded" to a newer model??

Not compatible. Period. The new 24" uses a different (newer) video standard, making an adapter unlikely. There are other 24" displays (DVI) out there, and Apple's 30" ACD is compatible. Else, hold off until you upgrade your computer.

Dual Cinema Displays - Worth it?

Greetings to all!
I just wanted to ask about the general opinion of the Apple Cinema Displays versus some other various Widescreen LCD's out there at the moment.
I'd like to run a pair of 20 Inch units off a Quad G5, however, I'm looking at the specs for the Cinema Display, and they don't appear to be too impressive (14ms Response time?) for a $999 Monitor.
For reference, I'm also considering the Viewsonic VX2505WM and the Acer AL2016W.
I'm not sure what I'm missing- but specs wise, ether of these units appear to be better then the Cinema Display, for less-then-half of the price ($350/Unit, versus $999/Unit). Better Contrast Ratio, lower Response Times, higher brightness, etc.
Am I missing something (other then the Aluminum enclosure- and the fact that it's an Apple product), or are there truely better monitors out there then the Apple Cinema 20" unit?
Thanks!
SC

I needed more real estate for a project recently, so I pulled the 20" acd from each of my minis and combined them on a G5 instead of the 23" - wow can't believe I didn’t do this sooner- the display’s DPI has always been crisper to my eye on the 20's and together they make a great space for design and digital imaging. I was going to buy another 23" but given the dual 20" scratched that for a few bucks more I’ll get 2 20” acd’s. To those that use "cheaper" monitors you must not do any critical color work or use them in an environment without an apple display- I just sold my Dell 2405 24" because (in my subjective opinion) I couldn't stand looking at it anymore compared to the rest of my apple display based systems -and yes it was calibrated and used on the same dual 2.7 G5 configurations with the same getrag eye I use on the rest of my monitors. Dells and such are fine for basic computing, but cheap is cheap. If you buy anything except a high-end lacie eizo or sony don't run it next to an apple display, you’ll be disappointed and of course always have a 21” apple studio display crt to put them all to shame….
4 G5's, 2 intel minis 1.25ghz pb Mac OS X (10.4.6)

Bridge CS5 preview / slideshow not working on 27" Apple Cinema Display

I'm using my 2009 (black key) MacBookPro and Mac OS X 10.6.7 running Snow Leopard.
2.4 GHz Intel Core 2 Duo
4 GB 1067 MHz DDR3
Adobe Bridge CS5 works beautifully on my MBP, my photography workflow depends on Bridge.
However, when I attach my 27" Apple Cinema Display and try to preview images by hitting the space bar I get a gray screen. Likewise, the slideshow renders only gray.
It's not the "black out other monitor". I've cleared the cache to re-render all the previews.
I've scoured these forums as well as the Apple ones, and the helpful folks currently at Photoshop World in Orlando advised me that, collectively, the kind people here know everything. I know I can't be the only photographer who uses this configuration. I'd like to use the display for client previews/ordering.
I would so appreciate any tips you may have for me; thank you in advance for your time.
Warmly,
Darcy
http://hisandhersphoto.net

Yes, thank you. I found that post - among others when researching before I asked. I tried all the suggestions in that one and in the others.
My issue isn't low quality rendering in the preview and slideshow - my issue is NO rendering at all in slideshow and preview. It's just blank. Gray.
I deleted the cache in my library and through the Bridge program itself to rebuild the previews. I tried the various options of "software rendering" on and off, and different configurations in the preferences and none seem to make the preview or slideshow work. I have all the updates from Adobe and from Mac.
I tried importing the photos I need to show my clients (who are coming to my studio this evening!) into Lightroom 3, and the LR slideshow works. But using LR and having to import photos into it is an extra step not in my workflow.
Ideally, I can make Bridge work instead of making yet another resource-consuming copy of these photos on this computer via the Lr library.
So - current state is unsolved.
Lightroom 3 slideshow and preview works, but isn't ideal since it involves importing the images into Lr. Since that works - would that mean my video card is acceptable?
Bridge can show thumbnails on the 27" display but no preview or slideshow.
Bridge preview and slideshow works perfectly on my 15" MacBook Pro.
I'm so disappointed since I bought the 27" Apple Cinema Display this week and was told it would work with my computer "out of the box" - I was sure to ask several times, "so there's nothing else I need to buy or do to make this work with my programs? Just plugin and go?" and several times I was assured, "Yes... plugin and go."
I sure would appreciate anyone who's made Adobe Bridge work with a 27" display. Thank you!
Darcy

Black band on my 30 inch cinema display. Any known causes?

Hey everyone,
My 30 inch cinema display is doing some wierd things which I havent encountered before.
If you can see the image, towards the LEFT SIDE CENTRE, there are these BLACK BANDS.
these start to appear after about 5-15 mins after the display is turned on. although they dont show up on bright backgrounds.
If I let to monitor cool down for 10 mins and start it up again they are gone and they start appearing again in about a min or two,
Has anyone seen any such issues before or is this a known issue with the 30 inch.
Any ideas on what I should do about this.
I will be taking it to Apple for sure as its still under warranty but would like to know
what is causing this and whats apples take on it.
Cheers,
Ani

I bought a 30inch as well a couple of months ago but have very little use except for watching movies. But when I use grey colour as the background the banding mark became very noticeable. It seems to be some kind of design issue i suppose and I dont know how Apple is going to address this. It's not a cheap monitor after all and i am very disappointed with this.

USB Over Current Notice on G5 with 22" Cinema Display

USB Over Current Notice on G5 with 22” Cinema Display
I have owned a Dual 2GHz 64 bit Power PC since 2004. In that time, it has performed virtually flawlessly (as in having no major issues to speak of). Now, all of a sudden, I'll be working away and a warning window with a large white exclamation mark in a red octagon pops-up stating: “USB Over Current Notice. A USB device is currently drawing too much power. The port to which it is attached will be deactivated.” The window repeats itself cascading down 3, 4 or 5 times. This will continue to happen even when I’ve disconnected the only 2 USB devices attached to the computer, i.e., an Apple keyboard and a Kensington Expert Mouse (#K64325). Can anyone shed some light on this problem. It is very disconcerting (not to mention annoying). Does anyone have a solution for me (other than “junk the old beast”)? The fact is it still works great with both Final Cut and Pro Tools. Last but not least, I think I’ve narrowed the problem down to my 22” Cinema display. With the computer is attached to another monitor, I’ve yet to have that warning pop up. Is that possible? Could the display be the culprit?

Yes, in answer to your question (BDAqua) my Cinema Display has a ADC connector & USB ports on the back.
Your asking that question brings another to mind. If there are those, who have figured out, wherein the actual problem lies, i.e., with the monitors that have USB connectors built in, why didn't Apple just issue a recall on those monitors rather than having so much spurious and speculative information floating around out there on the internet?
I've just for the first time tuned in to these user forums and blogs only to discover that this is a wide spread problem that has been going on for years. (???) People saying, "Oh you just need to restart the computer" or "it's a bad mouse" or "bad keyboard" or worse yet, "it's your MOTHERBOARD!!!" when in fact it appears to be none of the above. Surely this is something that Apple became aware of long ago. Why didn't they correct the problem raher than letting it persist and making their buying public jump through hoops. I've been an Apple user for many many years. I've spent tens of thousands of dollars with that company from my first Quadra 950 to my MacPro -- I find this very disappointing.
In conclusion, all I can say is, I sincerely appreciate that you've taken the time to respond in an attempt to help. Thank you.

Cinema display adapter for Mac Book Pro

I have an old 23" Cinema display. Which adapter do I need to run it from my MacBook Pro purchased May 2008? (I was disappointed when I tried to hook it up with the extant cable)

There are a number of Cinema displays variants and not all have the same video ports. Please look at the back of your display and post the Model code. It should be a 4-digit number preceded by either an "A" or an "M"

30" Cinema Display vs 24" LED CInema Display

I am on the fence about a 30" Cinema Display vs. a 24" LED Cinema Display. My concern is the technology of the 30" display. Are there any concerns I should have about its technology being outdated? How about the CCFL bulbs and their lifetime vs. that of the LED? I know I can get them refurbed for $1299 but price is not the issue. I want to invest money into something that is going to last a while.
Any owners out there with 30" displays that have had them for a while with no issues?
Message was edited by: Michael710

I just took delivery of the 30" and to this point I am disappointed. In my opinion, my wife's 24" iMac display is much clearer and much more vibrant. I have the older plastic 20" that is much easier to view with it's mat finish than the 30" mat finish. The 30" has some sort of subtle sparkle to it and the 20" is perfectly flat looking. I can't explain the look on the 30" but it is very disturbing to me. It's almost like the glisten on a screen when you wipe a damp rag across it.

Apple TV Setup to Apple Cinema Display

Is there any Hack to setup your apple tv to an Apple TV Cinema Display? After all you would think so being they are both apple products.
Karla

Karla the cinema display is 16:10 and not 16:9, its DVI and not HDMI and likely doesn't support HDCP which you'll need for rented movies. If you jump through a few hoops and get it working you'll be disappointed, you can get a really good tv for the same price which will work so much better.

27" Cinema Display - Black Screen

I have two of these 27" displays. One display works great. The other display has a black screen. It has power and will play music through the speaker and USB works. When I hold a flashlight up to the screen I can see what should be showing brightly and even read it (takes some work to read). When connected to the laptop it's recognized in the Display preferences etc.
This problem started by the screen going black from time to time. I could get it to come back on by unplugging etc. Then it went black and it won't come back.
I don't want to pay a bunch to repair. I'm very capable of doing the repair myself and with the tutorials online I can get it done. I've read numerous threads on this and several things are mentioned as the problem:
Blacklight or driver need replaced
Logic Board needs replaced
Power supply needs replaced (I don't see how it could be this since sound and stuff work on the display)
PRAM or clear preferences etc
I believe it's probably the backlight or driver and/or the logic board. I just don't know how to diagnose which it is. Any suggestions greatly appreciated.

I have the same issue. This a common issue with Apple's LED Cinema Displays since they first launched to replace their CCDL LCD's, it's not your system. I spent three years, using 2x 24" LED LCD"s that were problematic since day 1; power supplies and LCD panels replaced 2-3 for each. My AppleCare was due to run out in Oct., so I called AppleCare in May. Within 24 hours, they approved 2 new 27" LED Cinema Displays. Everything was working perfectly, until last night. One of the 27" displays shut down. As a communications and tech consultant (and former Apple Corp employee), I reset my Mac Pro's NVRAM and SMC, tried the display with my MacBook Air and Mac Mini, all three systems will not detect it. From my experience with Apple's horrible LED LCD's, it's definitely a power supply issue. I run my system off an APC SMART-UPS 1500 Sine Wave for servers, and my other display and 6-Core Mac Pro5,1 are fine.
Really disappointed in Apple's lagging quality. Before the LED LCD's I owned 2 23" CCFL LCD's that lasted me ~8 years before burnout began, which is fantastic. I don't know who produced the panels and internal components, but Apple had better get this together.
The thread I posted is below, hope this gains traction:
24" and new 27" LED Cinema Displays constantly malfunction, anyone having similar issues as below?

Disappointed in Cinema Display...

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