I have an early 2010 15" MacBook Pro with mini display port and recently purchased a used 24" Apple LED cinema display. The MacBook works fine on its own, but when I plug in the display both screens begin flickering. The flickering is similar to a screen adjusting the resolution. The macbook goes blue for a second then returns to normal for a second, then blue, and so on. The cinema display gives picture for about a half second then goes completely black for a second and repeats this until it eventually stops trying. Both units stop adjusting when the minidisplay is unplugged. The cinema display has three plugs: MiniDisplay, MagSafe (power), and USB (for sound). Both the power and sound work. I can plug in the magsafe and USB to charge my laptop and play auddio. The display plug is the only problem. Thanks!
MiniDisplay will probabely not support the Cinema's screen resolution...
SOURCE: Screen resolution.
Hello there!
It's fortunately quite easy to adjust the resolution your MacBook Pro sends over to your external display. Try this:
This should adjust your resolution to the maximum. To make these settings easier to get to in the future, check the box in the display preferences labeled "Show displays in menu bar". You'll see a small icon, meant to look like a display, appear in your menu bar. Going forward, you can click on this to set/change resolution settings without going through all the above steps.
Hope this helps!
SOURCE: the USB/ Fire wire connections do not work with my Apple display
try updating the drivers sounds like a software issue conflicting when putting other connections in
actionman
SOURCE: Apple Cinema Display 23"
Hi all,
I had the “short long short” blinking led problem with my
23′ ACD after a power outage which left my screen blank and
my cheek wet with a tear for my baby. I read somewhere that
a guy was getting a 1 volt reading on the middle pin of his
damaged 90 watt power block. I figured maybe the display might
work if I could somehow block the middle pin. So I cut a small
strip of paper wide enough to block just the middle pin and long
enough to cover both sides and it looked like a “W”. I gingerly
pressed it into the brick receptacle with a toothpick leaving
just a little slack so it would not tear when I pushed in the
small white plug. It was a bit of a tight fit but guess what.
IT WORKED… I am now enjoying my beloved monitor anew and saved
$$$ on replacement brick or repair.
If you want to try it and you feel you’ve nothing to lose, make
sure you cover just middle pin (both sides) and you may have to try a
couple of times. It worked for me, I hope you have good luck too.
Regards, Moozler
SOURCE: the screen is half blue
You many need to reseat the Apple DVI to ADC Adapter that is connecting your Apple Cinema HD 23" to your Mac.
If that adapter is not properly seated, it can cause a color distortion with the display. Also, if the adapter is damaged, that can also impact proper resolution and color balance.
To try and resolve this issue for you, I have a procedure I would like you to try:
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-SAFE BOOT MODE-
I am going to have you take your Mac into Safe Mode to see if we can't isolate what may be affecting your display's resolution.
Try these steps:
• Reboot your Mac
• Upon restarting your Mac, press the Shift key.
• Hold the Shift key until you see a White Screen with Gray Apple icon and eventually a spinning gear.
• When you see the Spinning gear, release the Shift key.
• Allow the Mac to continue booting up. Also this may take a little while
(NOTE: this may take anywhere from 5 to 15 minutes to load to the Safe mode screen depending on the performance of your Mac, but if it exceeds this time, shutdown your Mac and try just once more. It may have just frozen up the first time around for you.)
• You are going to enter the Safe Mode (which looks like your main desktop environment - the only difference is certain startup items are disabled.)
• Once within the Desktop in Safe Mode
• From the Finder Menu, click Go> Go to Folder
• Type in this line: /System/Library/StartupItems
• This path, is going to take you to the System Library folder which has all of your Mac OS X Startupitems.
• Remove all of those folders to the Trash.
*Reboot your Mac normally and see if you can access your normal User desktop environment.
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Here is an additional support reference for troubleshooting Apple Cinema Displays color or distortion issues.
Apple Support Link:
Calibrating your Apple Cinema HD Display for color accuracy
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This should help. If it does not let me know.
Regards,
-Mactechtrainer
SOURCE: Hi i have an apple display connected to my macbook
Unplug the display from your macbook, and restart your macbook, when it's fully restarted and you are logged in, plug the display back in, then check to see if it is detected. Macbooks don't like to be put to sleep (shutting the lid) with a display connected, this causes issues with display detection. So always unplug your display and wait about 5 seconds before closing the lid on your macbook, and when you open the lid, wait another 5 seconds before plugging in your display. The only time it is acceptable to leave the display plugged in when you close the lid is when you plan to use the macbook in clamshell mode, this is done by plugging in and configuring your display, shutting the lid, and then "waking" the macbook from sleep mode with an external mouse (wired or wireless will work). That will start the macbook using the external display as the main display, without even turning on the macbook built-in display. Never connect or disconnect an external display when your macbook is off or in sleep mode. Have a nice day.
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