27" Cinema display flickers when woken from sleep

I've noticed that my 27" Apple Cinema display flickers briefly when woken from sleep.
I have had the display for 8 months, and haven't noticed this before.
It flickers (or flashes), just once when the display wakes when the computer is woken from sleep. It only affects the bottom third of the display.
Once it has properly woken, and flickered once, it then works o.k.
Has anyone else had this?
Thanks.
Bob.

Yeah - I'm trying to verify that 100% right now. I know that I won't get full functionality from the TB dispaly (no TB, FW or ethernet on the back of the monitor) but if I can get video and USB between the Mac and the displays, that would be enough. I haven't seen any docuemtnation anywhere deatailing wether or not that TB displays will work with existing video cards / Mac Pro's, or if I'll have to do a full round of upgrades including my Mac Pro and the ATI 5770. And as you know, there are no TB video cards on the market at this time. My timing basically *****...
My plan was to return the Cinema Displays while I still can, fall back to a spare Dell 21" that I have lying around the house for a few weeks (yukkkk..), and then figure out what to do with the TB diplsay as they get closer to release. I'm contempling upgrading my Mac Pro, but if I can stick with what I have, it would save me some cash.I woudln't even mind upgrading my video card, but I just dropped $2000 on these 2 Cinema Display's last week, and I feel like they are already outdated.
PS - I am constantly selling gear, so resale value and having the "latest and greatest" are pretty important to me, hence the interest in the TB displays.
Bobby

Similar Messages

  • 27'' LED Cinema Display flickers when powering MBP and dimmed down

    The 27'' LED Cinema Display flickers (backlight flickers) in the following situation:
    * The display powers an MacBook Pro (e.g. later 2010).
    * The MacBook Pro is fully charged (i.e. power is not used for charging).
    * The MacBook Pro performs some GPU intense task (moving the mouse over the dock with magnification enabled).
    * The brightness of the display is dimmed down to one of the lower settings (one or two "bars").
    The problem disappears if the MBP is powered by an independent charger.
    We reproduced the problem with two different MBPs (13'' and 15'') and two different displays.

    Same problem here! I bought two brand new 27 inch Cinema Displays, one for work and one for my home office. Both showed the problem. I returned both, go replacement displays and both show the same problem. I am using them with a 13 inch MacBook Air late 2010. I use them with the MacBook's display lid closed and powered by the Cinema Display. The problem only occurs when the display brightness is at 1 to 5 bars. From 6 bars on everything is fine. I also noticed that the flickering is stronger when I USE the computer, i.e. dragging around windows, typing, etc. When I just look at the screen, the flickering occurs more sporadically. The flickering looks like a short switching off of the display light (a few milliseconds).
    I just tried the hint suggested in this thread and indeed, when I open the lid and have the MacBook running on batteries (not powered by the Cinema Display), the flickering is gone! So it really seems to be dependent on that.
    Please fix it, Apple! This is not acceptable for a premium-quality display! We have already done a good job narrowing down the conditions under which the problem occurs. You should easily be able to reproduce the issue like this:
    - use a MacBook (e.g. new MacBook Air) and turn it on
    - plug in all three cables provided by the 27" Cinema Display (power, DisplayPort, USB)
    - close the lid of the MacBook and re-awake it with an external keyboard so the Cinema Display will be the only display in use
    - wait a few hours for the Cinema Display to become warm (not sure if this is a necessary condition but it could be)
    - then, use the computer under low-light conditions and ensure the brightness is at 5 bars or less
    --> You will see the problem.
    By the way, the recent Cinema Display firmware update (to address the audio issue) did NOT solve this problem.

  • When woken from sleep, Displays wakes as one color, and instantly changes.

    I have noticed that on my new Macbook Pro 2.2ghz when I wake it up from sleep, the screen first goes to a navy blueish solid screen, flashes to the regular screen, and then changes to another color in a little less than a second. I remember reading somewhere that one great thing about the LED lcd is that it has no warm up, it just turns on. I am finding this weird that it changes colors, drastically at that, when it wakes. Please let me know why this is and if it is happening to anyone else. Thanks.

    This is the color profile loading... Go to your display preferences, select color, and choose either Apple RGB or Generic RGB, it should look like what you are seeing. I don't know which is the "default", but my guess is that when the computer wakes up, it figures out what monitors it has attached and then loads the appropriate color profile.

  • Screen flickers when resuming from sleep mode

    I have a newly brought T430 laptop with the Nvdia graphics card. Sometimes when I resume from sleep mode, the screen flickers before entering into the desktop view.
    Is this a problem or normal? I hope nothing is wrong with my gpu. Is there a way to check?
    Thanks!

    etresoft wrote:
    It is definitely not a Leopard bug because it has been happening on every portable Mac I've ever had.
    I don't agree. I had no problems at all with my MacBook Pro running Tiger. I initially did an upgrade from Tiger to Leopard and when the problems started I assumed it was a problem with the upgrade. I then completely erased and did a clean install of Leopard. The problem has actually gotten worse since I did the clean re-install.
    etresoft wrote:
    Just close the screen, wait for it to go back to sleep, then open it again. It will probably be fine.
    As I mentioned in my opening post, I've gone through that song and dance more times than I can count. I've closed it, waited for as much as an hour, opened it back up...same problem. I've hard powered it down, closed it, disconnected the AC adapter, removed the battery, opened it, held down the power button for 15 seconds, re-installed the battery, reconnected the AC adapter, pushed the power button, and the display will still be dark. It's sometimes taken as many as 5 or 6 iterations of that process before it will finally reset whatever problem it was having and boot normally with a functioning display.

  • Display anomaly when waking from sleep

    Ever since the SL Upgrade when my MacBook Pro wakes from sleep the very bottom right one third section of my screen does not look as it should, this thin strip of incorrect graphics ( usually mostly white ) only appears for about one second then the desktop goes back to normal down there . . . so far this is not a problem at all, just an anomaly . . . I bought my MBP early summer 2008 and never had a single problem before and after SL, just this oddity now . . . I have a ViewSonic VP2250WB LCD display mirrored via DVI . . . so I am curious if anyone else has this happening and possible reasons for it . . .

    Matteo : I guess it is a good sign that only 2 of us have reported this minor glitch here . . . I may experiment with switching to a different desktop pattern and / or screen saver to see if it persists . . . also, since installing SL I have only done Sleep and of course restarts after getting the 10.6.1 update and a few others so I need to do an actual Shut Down and later start up fresh and see what happens.

  • Display artifacts when waking from sleep...

    My G5 runs 24/7, and the display goes to sleep every night when i'm not using it.
    Lately when i wake my computer from sleep in the morning, i get artifacts all over the screen on various graphics... the artifacts are typically a bright teal color and they are about 1 pixel tall x 5 pixels in length.
    I know artifact like this usually appear when the Video Card is overheating, which is odd because the card isn't and has never been overclocked...
    I did just recently upgrade to the Apple 30" display from the Apple 23" display, i'm wondering if this has anything to do with it?
    i've got the NVIDIA GeForce 6600

    I would reseat the video card, clean any dust from the inside of the computer and then run the Apple Hardware Test. Post back and let us know what you find.

  • BootCamp Windows 7 - Crashes when woken from Sleep Mode

    Consistent problem on the WIN 7 side of the partitioned HD- goes into Sleep Mode either manually or on a timer, and then crashes when woken up; No problem using Sleep Mode on OSx side.
    Not likely MS will provide a solution. All recent upgrades/updates installed.
    Running WIN 7 Home Premium 64Bit
    Need to save the plant and conserve energy!
    Any suggestions?

    Ok, so it's certainly a Broadcom wifi adapter. The Lenovo nomenclature refers to it as "1x1 11b/g/n Wireless LAN PCI Express Half Mini Card Adapter (43142)". But why are you trying to install Realtek drivers?
    The only driver I could find is this one, for Windows 8. Please uninstall all other drivers, reboot and install this one, or let Windows find a suitable driver and see if that works. Also please read the document from the link, it gives detailed instructions on installation and uninstallation, how to check version number etc.
    It might be the case that you have to wait a bit for an updated driver for win 8.1 to resolve the problem, but It doesn't hurt if we try to find a solution.
    Did someone help you today? Press the star on the left to thank them with a Kudo!
    If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"!
    This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

  • Cinema Display won't wake from sleep

    After reading lots in the forums I've concluded lots of people have the same problem that we are mistakenly thinking is specific to a particular monitor or Mac or behaviour.
    Problem: Display suddenly does not wake from sleep - incidentally after an OS update and Cuda update.
    Hypothesis: This definitely seems like a software problem as I've solved it in so many new ways. (Some people are replacing hardware!) Once fixed, the problem recurs the next time the display goes to sleep. However solutions rarely work a second time.
    Solutions:
    1. Zapping PRAM fixes it.
    2. Deleting all displays preferences fixes it.
    3. Safe boot and clear caches may have fixed it.
    4. Pulling the Mini DisplayPort cable and blowing on it has fixed it. (I thought it was dusty since it worked. It may have just been pulling the cable.)
    5. Deleting a power management preference in System/Library/SystemConfiguration/ fixed it.
    6. Moving the power plug from one slot on a power bar to another fixed it. (***!?!)
    7. Creating a new user account fixed it.
    8. Now I'm stuck.
    Please can help me think of a new way to fix it? If I can get it going again, I will simply keep the computer and 2nd display awake forever.

    I have a new fix!
    8. Launch Magic Bullet Looks app and fiddle with the display settings!!! Woohoo! I got it back again.
    As long as the display never goes to sleep and is never unplugged (tried that) I can keep using the monitor. Sadly this means never lettting the new iMac sleep. 

  • Keyboard and trackpad unresponsive when woken from sleep

    I have a Retina MBP running OS X 10.8 Mountain Lion.
    The last couple days when I wake my computer from sleep the trackpad and keyboard do not respond, but my external mouse works.
    I have to power down my computer, restart and then everything works.
    Anyone else have this issue?  Anyone know a solution?
    Thanks

    Hi MojoTed,
    I'm experiencing an issue that sounds exactly like what you describe. It's not a lag, so much as an occasional failure of the trackpad to actually activate the button after it's been depressed. It'll often also prematurely release while I'm dragging a window. It's super frustrating.
    I'm pretty sure the problem is mechanical. If I press with much more force than I'm used to on my old 2007 MacBook Pro or the Magic Trackpad, it always works consistently. So the workaround for me is just "press harder". Harder than I'm comfortable with, actually.
    I've taken it to the Genius Bar, but they refused to service it because they didn't see a problem with just pressing harder. So I think I'm just stuck with it, unless it fails completely at some point down the road.
    MojoTed, if you "press harder" does your problem go away? If so we may have the exact same issue.

  • External Cinema Display flickers when attached to MacBook

    This usually shows up with an iPhoto image on the desktop. Pixels in dark areas turn green and dance around. The pattern resembles dithering artifacts, and the affected pixels move when a browser window is moved around the screen.
    The flicker often devolves into flashing pink pixels and pink lines, eventually making the display unusable. Powering off/on or changing resolution has no effect, nor does "detect displays" from the Display preferences.

    Took it to the local Apple Store (remember to make a reservation next time!). After about 30 minutes, the display started its flicker (hooked up to a different machine, while the MacBook was hooked up to a different display).
    So it was the display that was faulty. The Apple Store promptly replaced it with a new one.

  • IMac freezes mouse usage when woken from sleep

    I have an iMac, 2011 running OS X 10.9.4.
    Recently I have had an issue with the mouse freezing up after the computer has been in sleep mode. I can use a different mouse and have the same response so I don't think the mouse is the issue. The only way to get it back on is to use keyboard commands and force shutdown the unit. Is the hard drive going bad? is there something I can do to clean things up? I need some help please?

    Judging by the pixel issue I suspect a hardware problem. I would recommend running Apple's Hardware Test in extended mode, run it in extended mode and if no errors appear run the test multiple times. The reason being is AHT doesn't always pick up errors but if it does the errors are real. If you are not familiar with AHT please look over:
    http://support.apple.com/kb/ht1509 for instructions for your machine.

  • Detect display when waking from sleep?

    Is there any way to force the display detection when waking from sleep? I find that if the mini wakes before the monitor is on, i get a blank screen. When the monitor is on before waking, everything is normal.
    I have the DVI-Detective, and the problem is actually worse when using it -- nothing is detected when waking up, no matter if the display is on or not.
    My specs:
    OS 10.5
    C2D, 2Ghz - 2GB RAM
    Sharp Aquos 52inch
    All standard HD resolutions work fine - it's just now a matter if figuring out how to force the mini to detect the display...
    Surely there must be a way to do this?

    Great that you got it working. It seems what is happening when the TV is switched off is that the Mac can no longer see the EDID data. Basically, it's the same as if a hot-unplug event had occurred from OS X's perspective. The mini thinks the TV's video cable has been unplugged, so it thinks it is running headless, which of course it is not. And for some reason not completely clear to me, when the TV's power is restored, a hot-replug event is not triggered and the mini still thinks it's running headless. Maybe you are right that it is removed from the list of connected devices for good. But it isn't supposed to work like that.
    The DVI Detective is the right tool for the job in cases like this, so it's good you have one and it's good you got it working. I agree it would be nice if there was more override control within OS X for times like this when things go wrong. But if more TV and 2nd/3rd tier monitor makers paid more attention to computer plug-and-play, then these things would work right in the first place. Your TV is in violation of the plug-and-play standard because the standard calls for the host (Mac mini in this case) to be able to power the ROM and I2C bus within the TV even if the TV is in a powered down state. Clearly your TV isn't doing this.

  • 27 Cinema Display flickers on cursor change

    Hello,
    I've recently purchased a 27" Cinema Display and hooked it up to my mid 2010 13" MBP. Everything works fine except for one really annoying thing: The Cinema Display flickers when the mouse cursor changes. I've done a thorough search through the community threads and haven't found anybody who's experiencing the same problem. Could anyone please tell me if they've run into this issue, and if so if there's any way of fixing it.
    Thanks!

    Might be related to the thread below.
    To give you a quick summary, try either of the following:
    - use your macbook's charger rather than the cinema display magsafe connector
    - increase the brightness to 7 bars or more
    - simply unplug the magsafe used by the cinema display
    https://discussions.apple.com/thread/2669791?start=30&tstart=0

  • Missing sound + missing USB power (sometimes) from Thunderbolt Display when waking from sleep

    Hi
    Two problems - one of which is driving med crazy!!
    Have the latest updates, and the display is connected to a MBA (mid 2011).
    The two are almost alwayes connected, and every time I wake the MBA from sleep, the Thunderbold Display does not "support usb sound" - the sound options are only MBA and headphones. Only a restart will give me the option to use Thunderbolt as sound output: WHAT TO DO!?!?!!
    Sometimes when waking from sleep the USB in the Display seems to be "off" - the will not charge my devices (iPhone, iPad etc.). Only reboot seems to fix this... I have seen this in other discussions but not found a permanent solution - any thoughts?

    Same here but reinstalling OSX is a bit drastic. I solved the problem by deleting a preference.
    Go to Macintosh HD then System then Library then Preference panes then Sound.prefPane
    Delete Sound.prefPane (you need to type your password).
    Logout or restart.
    This has happend twice this week so WHY is this suddenly occurring?
    Hi,
    I found this solution in the forum, but I can't find it again. I had cut and pasted it into a text file, because it solved my problem. I just don't want to take any credit for it. It did work for me. I had no problems for 3-4 weeks with the monitor, I have had the sound problem since last Friday. Very frustrating.
    BSGINC

  • New MacBook Pro & 27" Apple LED Cinema Display Don't Go to Sleep

    I recently purchased a new 13" MacBook Pro (MacBookPro8,1) and a 27" Apple LED Cinema Display. When they are connected the computer occasionally has a problem being put to sleep. When clicking sleep, the monitor will take a little while to shut off, but in about 10 seconds, it will turn back on. Immediately when turning on, the image on the screen is quite scrambled (it does correct itself). Usually, if I attempt to put it to sleep multiple times, it will end up working. When it does go to sleep (correctly), the screen will turn off much faster than the times where it doesn't sleep.
    Anyone else have a similar issue they found a fix to? When speaking to Apple support, they thought it was part of an issue with 10.6.6, however, the update to 10.6.7 did not solve the issue.
    PS - I keep my MacBook Pro lid closed when using the display.

    Is your 2.6 the CTO upgrade from the high end 2.3 15"?
    Yes, both will work under OSX and Windows. One note, when you boot Windows, you need to unplug the USB from the LED Cinema display or Windows will not boot. Once booted, then plug the USB back in to regain brightness, etc controls.

Maybe you are looking for

  • User can't access a PDF with Forms

    On a website, we have a main menu PDF with a list of bookmarks linking to individual user manual PDFs.  When a user tries to access a user manual  PDF with forms in it, they get the error "There was an error processing a page. There was a problem rea

  • ITunes not working with Windows 7

    I cannot get iTunes to run under Windows 7.

  • Still images wont show!

    I'm using PPro 6 with a brand new PC computer, when I add any kind of still image to the timeline or source window they will NOT show up anywhere until after render. Big HD video files show up and play fine but not image files. Somebody please help m

  • How to hide a column (clnt) in tableview using MVC?

    Hy, I would like, please if you cand help me: how to hide a column (clnt) in tableview using MVC for example on sflight table. Thanks

  • TOP OF SITE WON'T DISPLAY IN MOZILLA FIREFOX.

    When using Mozilla Firefox my website won't display the top of the page on many pages. Works fine in Safari. Problem just started! Using Squarespace CMS.