23" Apple Cinema Displays gos black when routed through DVI extenders boxes

I have an ATI radeon 9650 with two DVI ports. My new set up requires my Mac to be further than the dvi connector's present lenght to my 2 HD cinema displays. I purchased 2 DVI extender boxes. Once connected the Utilities does not show the displays as Cinema HD Displays. And worse yet they both go black and the power light blinks. When I hook up the 23" directly through DVI to the G5 both displays come on. However the one connected through the extender box still shows the wrong display profile.
I have check and re-checked the cables, extender boxes, my graphic card and all seems to test out properly. I know this because I have another G5 with same specks that I have tested these hardwares on. Finally I thought it was my Bootup drive so I did a full erase and clean reinstall. the monitors worked fine for 10 minutes and then when I clicked on Displays in system pref window they both went black again. I can only conclude that the DVI extender box is somehow changing the signature of the HD Displays and the the system freaks out!
THE MODEL OF THE DVI extenders are DAS 101,and 101R
www.cooldrives.com/cadvexcat5dv.html ;
I am at my wits end. I need to get to work before I loose all my clients. PLEASE SOMEBODY HELP!
PS total lenght of CAT5 DVI extenders from Mac to Display 15ft max

Naelm G, I just read your first post a little more carefully. Is it true you are only trying to place the Cinema displays 15 feet away from the Mac? That's not very far. If you don't care about also extending the Firewire and USB, then you might be able to get away with a simple 10 foot DVI extension cable like this:
http://www.monoprice.com/products/product.asp?cid=102&cp_id=10209&cs_id=1020903&pid=2406&seq=1&format=2
The combinded length of the Cinema's built-in cable plus the 10 foot extension cable will be more than 15 feet. This would be the cheapest way to go by far.
Or if you want to extend the Firewire and USB along with the the video, then Gefen makes an extender that will do that:
http://www.gefen.com/kvm/cables/applecombocable.jsp

Similar Messages

Mac Pro 2008 Apple Cinema Displays are black and there are start up issues

I have a Mac Pro 2008 Dual quad 2.8 GHz. I have two Apple Cinema Displays (graphics are the standard ATI Radeon HD 2600 – 2 dual link DVI. I have 4 2-GB RAM sticks (8 GB total).
Neither of my displays are showing anything. Their power lights are on but they are completely black throughout the start up process. In addition when I try to boot up with both graphics cards installed, I get nothing – no beeps no chimes. If just one card is installed (either card in either slot) the computer beeps, chimes and makes the sounds of booting up, but not a flicker on the displays. RAM does not seem to be the issue as I have tried booting with several configurations of RAM sticks with no negative or positive effects. I tried booting up with Hard Drives 1 & 2 removed with no effect. I have tried several different start up moods and have reset PRAM.
My guess is that there is something wrong with the motherboard. Or is it possible that both graphics cards are bad?

The "least intensive" thing you can do is hold down Alt/Option at Startup. Thsi invokes the all-in-ROM Startup Manager, which will light up the screen gray or blue, then attempt to draw an Icon for each potentially-bootable Volume attached (if any). It works as if in slow motion, so you must be patient. If no activity after about two minutes you may count that as a failure.
The next most intensive is to attempt to boot from an incorruptible source of software, such as an Installer/Utilities DVD. This again uses the "one-size-fits-all" display driver, and attempts to load software off the DVD. The dark colored Apple is loaded off a drive -- it is not present inside your Mac.
The next most intensive step is to attempt to boot into Safe Mode. This also uses the "one-size-fits-all" display Driver, and does a disk check as it starts up, adding five minutes to the startup time. It then drwas a login screen and deamds your username and password, even if you normally auto-login.

How do i connect my Fujitsu Tablet + mac Pro to Apple Cinema Display 23'?

Dear Mac users
thanks in advance for your help.
I currently own:
• Fujitsu T 4220 (tablet) – Mobile Intel 965 Express – 60 Hertz – goes up to 1680*1050 (guess SXGA) – (it has the following other supported resolutions: 1400*1050, 1280*1024, 1280*768, 1280*720, 1024*768, and 800*600)
• Mac Pro
• Apple Cinema Display 23’
What I would like to do is, please refer to the jpeg posted on http://www.flickr.com/photos/34831802@N06/3234336204/, connect – at the same time – my tablet pc and my Mac Pro to the 23' Apple Cinema Display and switch (when I need) from tablet to MacPro using the same 23’ ACD. Top would be to be able to switch for one to the other while they’re both switched on. Usually on 2 pc’s with vga I’d use a switch A → B (in the jpeg it would be I → E) with a selector.
Have been reading different posts such as: http://discussions.apple.com/thread.jspa?messageID=8000641&#8000641 or http://discussions.apple.com/thread.jspa?messageID=6530475&#6530475 or
http://discussions.apple.com/thread.jspa?messageID=7417258&#7417258
+ others on the net and have (hopefully) understood that:
a) from Vga to Dvi I need a converter such as Geffen’s or similar
b) the problem with ACD 23’ is that it has only 3 resolutions: 1024*640, 1280*800 or 1920*1200
In the attached image I guessed a connection in order to connect – at the same time – both the machines to the 23’ ACD:
1) my fujitsu tablet (i in the image) has to be connected, with a Vga cable (h), to the Vga → Dvi converter (g).
2) from the Vga → Dvi converter (g) I need to connecto to the Dvi switch (c)
3) easier is connecting the Mac Pro (e), since I only need a Dvi cable (d) to connecto to the Dvi switch (c)
4) the Dvi switch (c) will then be connected to the 23’ ACD with a Dvi cable
Now, my questions are:
a) is the solution described above (Vga cable (h) to the Vga → Dvi converter (g)) a good solution or should I use, instead, a docking statione that comes with a Fujitsu Port Replicator (FPCPR65) which has a 1 x DVI-D port?
b) Given the 3 resolution accepted by the 23’ ACD (1024*640, 1280*800 or 1920*1200), I do not understand if I can use my tablet through a Vga to Dvi Converter and at which resolution (my tablet has the following other supported resolutions: 1680*1050, 1400*1050, 1280*1024, 1280*768, 1280*720, 1024*768, and 800*600).
c) Is there a way, also using an external video card or converter, to bring my resolution from 1680*1050 to 1920*1200? (the 16:10 ratio is in fact the same = WXGA (1280x800), WXGA+ (1440x900), WSXGA+ (1680x1050), WUXGA (1920x1200)
d) Talking about Vga → Dvi converter (g), am aware of the gefen product. Can you please list some others that might be good as well?
e) And how about the DVI switch? Any will work? Any particular suggestion?
Thank you very much for your help.
If you have any other suggestion, please let me know.
Regards,
Emil

Noone to help me?
No ideas?
Thanks,
Emil

HT4293 i am trying to use dual monitors when editing with FCPX. I have a macbook pro and an apple cinema display monitor. I have connected them and opened Fcpx but the option to use second monitor is not active! what do i do ? please help going bonkers!

i am trying to use dual monitors when editing with FCPX. I have a macbook pro and an apple cinema display monitor. I have connected them and opened Fcpx but the option to use second monitor is not active! what do i do ? please help going bonkers!

<http://support.apple.com/kb/HT5891>
You can use USB for the Apple trackpad.
<http://www.mobeetechnology.com/the-power-bar.html>

Cinema display goes black upon resolution change in Windows XP

Greetings
Earlier today, I updated my ATI X1600 Radeon to the latest Windows Catalyst drivers and to the Catalyst Control Center from ATI. Even since, whenever a Windows application (games, in this case) tries to change the resolution on my external Apple Cinema Display (designated as the main monitor in the ATI Catalyst Control Center, with the MacBook Pro display disabled), the display goes black, and the monitor power lamp starts to flash.
If I unplug the external Cinema Display from my MacBook Pro, my MacBook Pro display activates, and displays whatever it is I was trying to launch, so the problems is somehow related to the Cinema Display, even if the new drivers are causing it.
This happens regardless of my Catalyst Control Center settings, such as scaling the lower resolution to fit the screen, or keeping it the original size, with black borders around. The problem does not occur when I launch games using 1600 x 1024, the Cinema Display's native resolution.
Any ideas what might be causing it, and how to resolve it?

Update on my situation: when I tried to change the resolution manually in Windows, I encountered the same problem. Now, whenever I connect the Cinema Display to my MacBook Pro, the same thing occurs: the screen goes black, and the power lamp starts flashing, even though I've changed back to 1600 x 1024.

20" Apple Cinema Display not recognised after upgrading to OS 10.8.2 (Mountain Lion)

20" Apple Cinema Display not recognised after upgrading to OS 10.8.2 (Mountain Lion).
Hello Apple! Anybody there? How long does your community have to wait for a solution?
The same problem has been unsolved for months now. No statements from Apple either.
I was told today to wait for 10.8.3. This might solve the issue. I can not belive my ears.
My MacBookPro 4,1, Intel Core 2 Duo with 2.5 GHz Processor and Graphics chip: NVIDIA GeForce 8600M GT, will not talk to the exter. 20" Cinema Display ( Model Number A1081 ). The screen stays black. Resetting the PRAM did not help. I removed the 'com.apple.windowserver.plist' and the 'com.apple.windowserver.OE35739etc,etcxxxxxxxxxxx.plist', but that did not help either.
Any other solutions, or do I have to downgrade or give up on Apple Computers alltogether after using them for over 25 years?

I found out that I needed a $100 mini displayport to dual-link dvi adapter to make my $30" cinema display work with my macbook pro
http://store.apple.com/us/product/MB571Z/A/mini-displayport-to-dual-link-dvi-ada pter?fnode=51
When I found out that solved the problem, I took it back because that was too expensive for a stupid adapter, and it still didn't work perfectly.

Is an Apple Cinema Display (ca 2005) Compatible with Mac Mini?

I have a 2005 Power Mac Dual G5/2.3 I took off-line last year. It used an Apple Cinema Display 20" that has it's own power supply "brick" and a cord with the monitor connection, a USB connection, and a FireWire connection. Is this display compatible with the latest Mac Mini? Thank you for any advice you may have.

That's correct, the link perfectly describes the Apple 20" Cinema Display I have. With the new Mac Minis requiring an HDMI cable to link to a display, the HDMI to DVI (female) adapter looks like the one I need. I found this on Amazon: http://www.amazon.com/Gino-Black-Female-Converter-Adapter/dp/B006Z8N60C/ref=sr_1 _18?s=electronics&ie=UTF8&qid=1371158207&sr=1-18&keywords=hdmi+to+dvi+adapter+ca ble
This adapter is an all-in-one plug with no cable linking the HDMI to the DVI ends. It looks like it might be too wide to plug in anything immediately adjacent to the HDMI socket on the Mac Mini due to the width of the adapter when the adapter is plugged in. However, I could get around this by purchasing an extension cable with HDMI male on one end and the HDMI female on the other if I had to.
However, one of the comments said that the DVI is video-only and that another cable is required for audio. Can I assume that plugging in either or both of the other connections (a USB and a FireWire) coming out of the 20" display will take care of audio?
That leads to another answer, but I'm confident that I'm almost there thanks to your help. Close enough to mark this as "solved". Thank you! Let me know if you have any further thoughts with regard to the audio though.

20" Apple Cinema Display - Dim Backlight Fixed! (Sorta)

Well... as many other Apple Cinema Display owners have experienced the infamous dim backlight with the "short short long blink" - I have some wierd news to report...
Mine got fixed last night on total accident.
Last night there was a huge storm in my area and there was a lot of lighting and massive down pour of rain, stay with me honest I have a point.
My G5 was on last night while I was asleep in the other room within visual range of the display. There was a lighting strike on my property about 20' from where my office is which is on the corner of the house. The lighting hit the tree and send an obvious surge of power into my house and zapped some electronics.
Wireless router, cable modem, and thermal label printer all bit the dust - and the USB ports on the back of the ADC display. I jumped up from the sleep and saw the monitor light up out of screen saver because the house shook so hard. I ran over to the machine and tried to move the mouse and keyboard and no go since the USB ports are burned out, but the monitor was FULLY LIT UP. I have unplugged the monitor and plugged it back in multiple times, turned the machine off and let it sit and it still is working great minus the USB ports.
My hunch is this... because of the dead USB ports which are no longer drawing any power, is it possible that the USB ports are the cause of the "short short long blink"?
My screen went dead initially when it was in a deep sleep mode and NEVER came out of it until now.
So basically what I am suggesting is that someone try and unhook the USB (if it is even possible) and see if that helps with their display - if not, I guess I am just lucky and my Apple Cinema Display is just lucky to not have fully bit the dust.
-Jonathan
Dual PowerMac G5 Mac OS X (10.4.10) 20" Apple Cinema Display (Clear)

We can't answer that because that's going to depend on who you talk to. By the book, AppleCare covers defects and not accidental damage, so you could get a No answer if they determine it was not due to a defect. But realistically, sometimes you talk to someone who decides to use their ability to authorize an exception and get it fixed anyway. The only way to find out is to call AppleCare.

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

Apple Cinema Display

HI. I have a question. I am replacing (finally) a MAC G5 PPC with a MAC Intel (tower). I have 2 Apple Cinema Displays - a 20 inch and a 23 inch. When I migrated everything from the PPC to the INTEL, I hooked up one monito to each cmputer. Good. All fine and dandy. Now, I shut everything down and I want to connet both Apple Cinema Displays to the new Intel. However... the new Intel has DVI pots and only one PIN port. Ok..so I went and bought a MINIDisplay to DVI adapter. Now.. here's the problem:
When I pug in both displays, the bigger 23 inch stays dark (although the power is on)...but it takes OVER as a primary display! Which annoys me because now I cannot see my desktop...only that is in he secondsary monitor... So I went to System Preferences and tried the DETECT DISPLAYS.... it only shows one. However when I go to GATHER WINDOWS.. I see TWO blue icons that symblize displays. My bigger display..still dark. I tried resetting the PRAM...nothing.
I'm wondering if all of a sudden my biggers display gave out? I mean..it was just eralier today that it was working. Oh...and one more thing: if I do not use the 20 inch and plug in ONLY the 24 inch... still dark.
Help. (my mac is Intel Tower running on Mac OS 10.7
Many thanks in advance.
PS I now see two window displyas when I say DETECT WINDOWS One is 1920x1200 (which I assume is the 23 inch) and the other is 1680x1080 (which I assume is the 20 inch). So I would think that the system preferences can detect these two monitors, but why is my 4 inch black??? Did it fry>

Solved it. I am an idiot. It was the power unit. They look the same so I hooked up the 20 inch to the 24 and viceversa. I'm an idiot :-)

Apple cinema display, IP address, Computer Name and Apache

I have been working on getting Apache, php, mySql setup to do a bit of web design and playing with wview (weather station), drupal, wordPress, etc. Right off the bat, let me make clear that I am not attempting to host sites to the big bad WAN. LAN only!
The changes to OS X over the last several versions were a definite speed bump but with the help of Neil Gee's youTube video and this forum pointing me to a permissions problem, Apache, mySql, and php are installed. Browsing localhost, localhost/~myname and a couple of sites I set up using vhosts in ~myname/Sites from the laptop works. Joy! Browsing from other computers on the network nothing worked. Half a day googling the problem before I noticed something odd about the IPv4 Address for my Mac.... when I tried switching it to a static IP I got the message that the IP was already in use.
At this point I need to describe my setup... a MBP with Thunderbolt connection to an Apple Cinema display. The ACD is connected via ethernet and the laptop was connected to the LAN via the Thunderbolt. The network router is (unfortunately) an HGV-3800 whose radio is turned off. Wireless in the household is accomplished by a Time Capsule in bridge mode. Not my preferred setup but after killing off several good days, I capitulated to the recommended AT&T configuration.
A quick browse of devices on the router revealed that the IP being used by my MBP/ACD had an unknown device name while all the other devices in the house had their names... odd. So I fired up the wireless on the MBP and took another look at the device list... the router listed this new connection with my correct device name. Even better, when I browsed to http://myComputerName and http://myComputerName/~myname from another computer on the LAN the It Works! and My Site Works! came up perfectly. However, the sites that i set up in vhosts stubbornly refuse to come up on the other devices.
My interpretation of what is happening with the ethernet connection to the ACD is that this connection is not identified as being to my laptop... it is to the ACD and somehow the laptop is borrowing it... surfing works and I can connect for file sharing to other computers on the LAN (though it is a bit clunky)... the borrowed connection is not up to the task of hosting on the LAN. My question about this is whether there is a setting I can make which will correct this behaviour and allow the Thunderbolt connection to function as if the ethernet was directly connected to the laptop?
The other more important question is what is needed to make the sites I have in myComputer/~myName/Sites browseable from other devices on the LAN... these same sites that are coming up perfectly when I browse to mySite1.com from the laptop?
I am not really looking for advice to go get Mavericks Server... many different issues with that scenario.

Your router only has a limited about of features to make it "stealthy."
Here are a few things you can try...
- Access the router's web-based administration @ http://192.168.0.1.
- Advanced > Virtual Server
-- Virtual Server: Disabled (pg. 25)
- Advanced > Applications
-- Applications: Disabled (pg. 26)
- Advanced > Firewall
-- Enabled (pg. 31)
- Advanced > DMZ
-- Disabled (pg. 33)
- Tools > Admin
-- Change the default passwords for both the admin & user accounts.
-- Remote Management: Disabled (pg. 36)
- Tools > Misc
-- Discard PING from WAN side: Enabled
-- UPNP Settings: Disabled
-- Gaming Mode: Disabled
-- VPN Pass-Through
--- PPTP: Disabled
--- IPSec: Disabled (pg. 41)

Apple Cinema Display on PC w/Radeon 5850

I have an Apple 24" LED Cinema Display and thought it would work with the new Radeon 5850 since it has DisplayPort. I'm using a female Mini DisplayPort to male DisplayPort cable.
http://estore.circuitassembly.com/pr...ter-Cable.html
When hooked to the PC, the Apple display doesn't have a picture. If I hook up a DVI display I get the following error in Windows.
"The system has detected a link failure and cannot set the requested resolution and refresh rate on your DisplayPort display. Your display might not support the requested resolution or there may be an issue with the cable connecting the display to your computer."
The Apple display shows up in the Catalyst Control Center, I am just unable to use it without getting that error. The display itself works fine on my MBP, and I have tested the cable using the Apple Mini DisplayPort to DVI adapter to hook up a DVI display to the PC's DisplayPort, and that works, so I know the cable is good and the DisplayPort connector on the card works too. XFX technical support doesn't have the Apple display to be able to test it in their lab, and ATI is on holiday break until next Tuesday. So, in the meantime I thought I'd check here and see if anyone else has tried this same setup or one similar.
I've heard from others who have connected the Apple Cinema Display using the same cable to other PC video cards with DisplayPort, and it works, so it seems like a compatibility issue with either the 5850 series or the XFX card in particular. It is a very strange issue because technically there is no reason the Apple Cinema Display shouldn't work on a DisplayPort equipped PC.

I just drove down to CA and bought one of those cables. It worked with my XFX 5870 to connect an Apple MDP to Dual-Link adapter....to get the "DP" part of Eyefinity covered. Oddly, I also found the same Femal MDP to Male DP adapter from another company called CPUSTuff. They happened to be in THE SAME BUILDING. 2 different guys came out with each of the cables. The white one from CA works...the black one from CPUStuff...DOESN'T.
The Eyefinity connection is touch and go, at best. I am able to make it work....but it drops out everytime I end a game or let monitors go to sleep.
Hope better compatability is coming...feels very "buggy"

Apple Cinema Display with DVI to VGA graphic adapter... HELP

A friend of mine has a PC (Windows XP based) and is using the Apple Cinema Display. Since his graphic card has both vga and dvi slot, he can plug the monitor to DVI and got it working, but when he tried to plug it into the VGA slot using DVI to VGA converter, it did not work. Is there a need of special converter or adapter?

Hi royz86,
To run a DVI display off a VGA output, you need a rather expensive converter box. These converters vary in performance, reliablility and application possibilities and certainly don't compare with using a native DVI output.
Your friend was probably trying to use a DVI to VGA adaptor (which won't work "the other way around"). It works by grabbing the analogue signal that is included in a DVI-I output and setting up a VGA output that way. These don't work with DVI-D outputs, by the way.
Cheers!
Karl

Macbook Air + 30" Apple Cinema Display + Powered USB hub

I just received my dual link DVI to mini display port adapter in the mail today, and so far it's working just fine connecting my newer generation Macbook Air to the older 30" Apple Cinema display (the Air is closed, with an Apple wireless mouse/keyboard connected via Bluetooth).
I'm wondering if anyone has any success connecting a powered USB hub to either the adapter itself or the 30" display in order to gain some USB functionality out of the Air? I have a powered 4 port D-Link hub which worked fine directly into the Air, but I can't seem to power any devices when it's hooked up to the 30" display or directly into the adapter. I can't even get devices (external powered hard drives, Mbox) to work when plugged into the screen directly (no hub).
I called AppleCare about the problem and they said they don't support USB hubs via the 30" Apple Cinema Display when connected to the Macbook Air, but if anyone has any experience with this situation or if someone could offer me advice to get USB functionality out of my MBA + 30" ACD, it would be greatly appreciated!

Welcome to the Apple community.
Unfortunately not.

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

23" Apple Cinema Displays gos black when routed through DVI extenders boxes

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