1 2 3 4 Previous Next 50 Replies Latest reply: Jan 18, 2014 4:37 AM by Gabrielig Go to original post
  • 15. Re: 24" LED Cinema display won't wake from long sleep
    Dead Drive Level 1 Level 1 (0 points)
    "Me Too" It started about 2 years ago. Finally I called Apple support they shipped me another video card it seemed to work for a period of time but then it re-appeared if the monitor was left on to long. Now I can not get it to wake. I tried another monitor to ensure the card worked - it did work. Plugged my monitor back in nothing. Got the short - long - short blinking which tells you to check the power adaptor - its the right power adaptor. Maybe my adaptor has gone bad?? Maybe not. I used to unplug the monitor from the computer and unplug the monitor and let it sit for 15 minutes. That always use to work. I am now in the middle of letting it sit to see if it works this time. I will report back if it works.
  • 16. New iMac 27inch, Quad Core i7, 2.98ghz, 16GB mem is SLOW
    Dead Drive Level 1 Level 1 (0 points)
    Not sure if I have a bad machine or not. It appears very slow at startup, it took me 11 hours to Load Logic Studio? It seems to take twice as long to startup vs my 23 inch iMac 4gb mem, 2.9ghz. Anyone else experiencing these issues. I would expect with Quad core and 16gb memory on the i7 would be lightening fast yet it appears to be turtle slow with basic operations - especially loading software.
  • 17. Re: 24" LED Cinema display won't wake from long sleep
    Dead Drive Level 1 Level 1 (0 points)
    Ok did not work. Off to the genius bar
  • 18. Re: 24" LED Cinema display won't wake from long sleep
    Dead Drive Level 1 Level 1 (0 points)
    Genius Bar was no genius. He plugged in my monitor pressed the button and it did not wake up. The Genius said it would cost me $400 I asked what if its a fuse or something simple - he stated it was $400 no matter what. Seeing how this has happened to THOUSANDS of customers you would think they would perform a recall. I have checked numerous other sites and the # of people who have experienced this same exact issue is in the thousands. I am positing my Displays specific info which you can find by going to "About This Mac" under your apple and clicking on Display.

    Manufacturer: 00000610
    Model: 0000921C
    Serial Number: 020018D7
    Chipset Model: ATY,RadeonX1900
    Type: GPU
    Bus: PCIe
    Slot: Slot-1
    PCIe Lane Width: x16
    VRAM (Total): 512 MB
    Vendor: ATI (0x1002)
    Device ID: 0x7249
    Revision ID: 0x0000
    ROM Revision: 113-A52027-140
    EFI Driver Version: 01.00.140
    Displays:

    Cinema HD:
    Resolution: 1920 x 1200
    Pixel Depth: 32-Bit Color (ARGB8888)
    Mirror: Off
    Online: Yes
    Rotation: Supported

    Display/Graphics Card
    ATY,RadeonX1900:

    Name: ATY,Alopias
    Type: display
    Driver Installed: Yes
    Bus: PCI
    Slot: Slot-1
    Vendor ID: 0x1002
    Device ID: 0x7249
    Subsystem Vendor ID: 0x1002
    Subsystem ID: 0x7249
    Revision ID: 0x0000
    Link Width: x16
    Link Speed: 2.5 GT/s

    Manufacture Date: C22CBD80

    I'll bet there are a lot off the same lot, date and manufacturer.
  • 19. Re: 24" LED Cinema display won't wake from long sleep
    Dead Drive Level 1 Level 1 (0 points)
    OK so I paid the $400 for the repair. I got a call a week later and they told me that instead of repairing the screen they would just replace it with a new "up to date - their latest LED Display". Cudo's to Apple I am very happy with this outcome. They are the best in customer service.
  • 20. Re: 24" LED Cinema display won't wake from long sleep
    RISDMasters Level 1 Level 1 (0 points)
    I had this same problem, too. Oddly though, ONLY when he display was connected to my G5 Dual 2.7 tower. When I unplugged the display and immediately plugged it into either my MacBook Pro or my Mac Mini, it would work every time.

    I tried all kinds of voodoo with resetting various things on my G5 tower, unplugging/replugging, moving the display power adapter to another surge strip, etc... everything I saw in various forums.

    *WHAT FINALLY WORKED FOR ME:* I unseated the video card, blew off the connectors with compressed air and reinstalled it. At the same time, I pulled the second drive I had installed in the tower (original drive is 250GB and I had put in a second 80GB drive). Rebooted the system and the monitor started up just fine.

    I'm skeptical that this issue lies only with the monitor's power supply. After spending 6 hours trying to resolve the problem, I question the following as possible culprits:

    1. Could our computers be drawing the necessary power away from the monitor? In my case, pulling that extra drive could have been the solution.

    2. Could our connectors just be dusty? I've noticed a lot of posts around this issue are running big machines... towers and Pros. These generally run hotter and keep their fans moving... creating more dust. In my case, both my other machines that the monitor connected fine to are very clean inside. My MacBook Pro is new so of course it's clean. But my mini is older than my tower, and is still perfectly clean inside... likely due to the fact that I barely use it. But my G5 tower that had the monitor problem is my workhorse... the fan is constantly running. When I opened it up I was shocked at how filthy it was. Martha Stewart would have gasped at the sight. Perhaps the connectors on these monitors are extra sensitive?

    3. Could the issue lie in VRAM? In my case, pulling the video card and reseating it would have cleared the VRAM, yes?


    These are just thoughts I'm throwing into the mix for consideration, based on what worked for me. I'm just glad to have it working again. Apple should be of more help with this issue... their support documentation on this is terrible... reflects the fact that they have no clue what the problems are and/or they don't care to dive down into something so complicated in order to help us.

    *I buy Apple so that these things won't happen.*

    Apple, we shouldn't have to hold torches to our computer equipment and flit about in voodoo power strip dances to get our expensive machines to work.
  • 21. Re: 24" LED Cinema display won't wake from long sleep
    dawsman Level 1 Level 1 (0 points)
    I just had this problem with my refurb 24" aluminium cinema display that I've had for 2 weeks. Shut down on Saturday evening and Sunday morning the display wouldn't wake up. I tried moving it from my iMac to the Macbook Pro, then back to my iMac, but to no avail. The display was detected, but no image was displayed (I thought it was a backlight issue). I carted it down to the Genius Bar today, the Genius plugged it in and it worked fine! He said that unplugging the monitor for 15 minutes would have reset the SMC controller on the logic board of the monitor, which probably fixed the problem. I wish Apple technical support would have suggested this on the phone when I rang them BEFORE I went to the trouble of taking it to the Apple store!
  • 22. Re: 24" LED Cinema display won't wake from long sleep
    yeequon Level 1 Level 1 (0 points)
    So is it a logic board issue? I have the same issue... If it goes to sleep it will not come back on. I have to shut it down all the way to have it wake up.

    Here are the specs for my Video/Display

    ATI Radeon HD 2600 XT:

    Chipset Model: ATI Radeon HD 2600
    Type: Display
    Bus: PCIe
    Slot: Slot-1
    PCIe Lane Width: x16
    VRAM (Total): 256 MB
    Vendor: ATI (0x1002)
    Device ID: 0x9588
    Revision ID: 0x0000
    ROM Revision: 113-B1480A-252
    EFI Driver Version: 01.00.252
    Displays:
    Cinema HD:
    Resolution: 1920 x 1200
    Depth: 32-Bit Color
    Core Image: Hardware Accelerated
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Quartz Extreme: Supported
    Rotation: Supported
    Display Connector:
    Status: No Display Connected
  • 23. Re: 24" LED Cinema display won't wake from long sleep
    C3C1li4 Level 1 Level 1 (0 points)
    I just experienced this very issue when starting my CPU this morning. After restarting, resetting the PRAM (made no difference), disconnecting and connecting the monitor cable from my MacBook (still no difference) - I unplugged the powercable from the back of the Cinema display, and plugged it in again while my laptop was on (and all cables from Cinemadisplay connected to the laptop). This forced the screen back on and it works a treat.

    Wish there was a powerbutton on the display, as yanking the cable out feels like an extreme measure.. but if that's what it takes..
  • 24. Re: 24" LED Cinema display won't wake from long sleep
    GuyBruce Level 1 Level 1 (0 points)
    I have the 27" Cinema Display with the most recent 12-core Mac Pro, OS 10.6.5. Everything is a month old. Today I had to restart it several times because it would not wake up from the sleep mode. Not much help from Apple - zapped pram and ran disk utility/Repair Disk Permission - with apparently no luck (it just did it again).

    I already had the problem with the sound I read about in other posts (which was resolved by zapping the pram). And a flickering issue with the video and audio (repaired by replacing the graphics card - it was one of the mini ports). If it makes anyone feel any better, this Mac is a replacement for my 2-year old Mac Pro, Duo Quad 2.8ghz which kept shutting down on me. What is going on with Apple?

    After reading these posts, I'm turning the sleep off and either taking the display back or exchanging it. Why waste more of my time?
  • 25. Re: 24" LED Cinema display won't wake from long sleep
    Guy Parrot Level 2 Level 2 (410 points)
    I'll add my two cents by stating I have the very same problem with my 24" iMac and a 24" ACD. Put it to sleep for a short while and the ACD will wake shortly after the iMac. Put it to sleep overnight or shut the entire system down and the ACD won't wake at all.
    I know the ACD is recognized by the iMac because it shows in the Monitor Preference panel. But there is no picture at all. Additionally, I have two items connected to the USB ports of the ACD and none are alive. That points to power management, as far as I'm concerned but is it from the iMac or the ACD? How to go about to find out?
  • 26. Re: 24" LED Cinema display won't wake from long sleep
    Guy Parrot Level 2 Level 2 (410 points)
    Y'all musta have your problem fixed cuz this everyone's been mucho silent in the past few days!
  • 27. Re: 24" LED Cinema display won't wake from long sleep
    Guy Parrot Level 2 Level 2 (410 points)
    So I took my iMac in the Apple Store to have it examined, and of course, everything works well. Just the same, the Genius decided to order the logic board as well as another part for the ACD, and will call me back when the parts arrive at the store.

    To be continued...
  • 28. Re: 24" LED Cinema display won't wake from long sleep
    Guy Parrot Level 2 Level 2 (410 points)
    To start the New Year with gusto, the ACD works fine today! What changed today? It's much warmer outside, so the temp inside rose by one or two degrees... Maybe shining a light inside it or lighting a candle when it gets colder again will work...
  • 29. Re: 24" LED Cinema display won't wake from long sleep
    dawsman Level 1 Level 1 (0 points)
    Okay, since my last post on 29/11, my ACD died again. So I took it back to the Perth Apple store for the second time but this time it didn't work there either. They replaced the logic board and I got it back within 3 days and everything worked fine....for a few days.... then it happened again! I had it all unplugged ready to take to the Genius Bar again, then I thought I'd try in one more time before doing so, and it started working again!!! Interestingly, it came back to life when I plugged my iPhone into one of the USB ports on the back. Since then, I've disabled sleep on my Mac and kept it running 24/7 with the odd reboot between OS X and Windows 7 and everything has been fine. Except for one time when I plugged my iPad into one of the USB ports on the ACD and it died, then I changed to another one of the USB ports and it came back to life again. Very strange behaviour.... I'm starting to think this might be a general issue with the logic boards on these things which will probably never be resolved...