I-Mac 24" Screen Flicker

I have a 24" 2007 imac that is out of apple care.
When the screen is not on full brightness and the CPU has been fully loaded (i.e. processing RAW files) I get screen flicker and the only way to clear this is to turn the screen up to full brightness. I have tried using Shades but this does not help.
Has anyone got any ideas, is my screen on the way out?

Ausha, I can't answer all of your question but I do have some suggestions/recommendations for a few.
4. How good are the blacks ?
The blacks are very black, very rich due to the glossy screen. The look better on mu iMac display than the Samsung display I have.
5. How can one adjust the height of the screen
Screen Heigh is fixed. You can always use a ream of paper or two, that is what I do.
6. What color calibration software would be the ideal
I use Spyder2 Pro and it does a fair job on the calibration. The problem is that with the glass over the CD the "spyder" doesn't get the best reading off of the display. I would imagine that Pantones "Huey" calibration would have this same issue. Either one of these programs are rated very high though.
7. How is the effect of glossy screen on the eye. Is it a huge strain?
If you have a very bright room the glare can be bothersome. If the room is overhead fluorescents or indirect lighting it should be ok. I've only run into a couple of instances where it really bothered me. Most of the time I don't even notice it.
8. Capture one pro vs Apples own aperture for raw editing is it worth spending extra £219 ???
I use Adobe Lightroom and love it. The cost is about the same as Aperature. I did quite a bit of research and comparrisons between Aperature and Lightroom before buying one and like the features and useability of Lightroom better. Plus it integrates seamlessly with Photoshop CS3.
http://www.adobe.com/products/photoshoplightroom/
Hope this helps you
Brian

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CS5 AS2 mac projector screen flicker–no flicker from CS3 projector

I've been working on a flash project for a while using a G5 PowerPC, 10.4.11, Flash CS3 using AS2 and publishing a mac projector/Windows exe. Mac projector has always worked fine. So has the exe. I just upgraded to an iMac, Snow Leopard 10.6.8, AMD card and Flash CS 5.5 v11.5.0.325.
I'm using the same CS3 AS2 flash file from the old G5 CS3 setup on my new Snow Leopard Mac CS 5.5 setup. When I publish it, the mac projector flickers like crazy. It looks to be an animated png issue. But I have never had that problem on my old slow G5 - the projector always played perfect, no flicker.
On this CS5.5 generated projector, the flickering occurs on the splash - large png files, but my G3 never had one issue. Also, my small png rollovers flicker - not just the animation. And the screen flickers non stop when there's no mouse activity.
I copied over a backup of my CS3 generated projector onto my new computer and played it to see if it was a graphics card issue. No flicker! The CS3 projector plays perfect on my new Mac. All content within the two projectors are identical - What gives?
Why is CS5.5 generated projector flickering, but the exact same file from a CS3 generated projector works perfect on BOTH computers?
I've spent several hours searching for the answer but can't find a flicker issue similar to mine.
I don't have bitmap caching enabled. I didn't change any of the default settings in CS5.5. I just copied the CS3 file to my new computer and published it, then I got instant screen flicker. I don't know what other settings to change for projectors. Never had performance issues with projectors or exe files, no matter how old the computer was that was playing the file.
This must be a Flash setting issue, but I can't find it.
By the way, the cs5.5 genertated exe file plays like a champ - no issues.
Ideas?

I also tried publishing the projector in flash player 9 and 10 to see if that would make a difference. It did not. I was publishing in flash player 8 on my old G5 computer and that's what I published it as through CS5.5 as well. That didn't work either. I'm search for some sort of fs command AS2 issue when using CS5.5 to see if I need to change the code, but have not found anything yet.
It's the full screen mode that is causing the flicker though - only when published from CS5.5. Full screen mode works out of a CS3 projector on both computers.
Screwy.

When I move my mac the screen flicker and must be rebooted

when I move my mac the screen flickers and goes blank then must be rebooted. Crap

Hi , and a warm welcome to the forums!
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.
If 10.7.0 or later...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.
And sorry to report that OSX is more Widows like than ever, but….
If that doesn't help Reinstall the OS.

Mac air screen flicker

my mac air screen flickers for no reason, does not appear to depend on the hinge, or power connected or not.
hard reset keeps it down for a while **** screens out while writine this....
http://youtu.be/uemAbRB-KjM

You can perform the following two procedures and see if there is a difference:
Resetting your Mac's PRAM and NVRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
But, I would strongly suspect a hardware issue related to your display, for which no online troubleshoot exists.
Perform the Apple Hardware Test (or Apple Diagnostics depending on your model), and see if anything turns up:
Using Apple Hardware Test - Support - Apple
If the issue isn't resolved, bring your machine into Apple for a definitive and free diagnosis

2011 i5 2.5Ghz Mac mini screen flicker issue...

Hey all,
Just wondering if anyone else is experiencing this issue. I have my 2011 Mac mini connected via HDMI to my TV, and each time I turn the TV on,- after about 5 minutes I get one single flicker where I lose picture and it comes back immediately. This never happened with my 2010 Mac mini connected the same way, which is why I'm surprised.
Again, this only happens once. After I turn the TV off and then back on, it will do the same thing again after 5 minutes. Very odd.
Thanks, guys.

After 3-4 calls to the support the last thing I was asked to open the terminal and digit :
cd /System/Library/Displays/Overrides/DysplayVendorID-410c
push enter. You'll get a warning but you can continue.
Then :
sudo mv DisplayProductID-0 DisplayProduct-0 old
push enter and restart the mac.
the person on the phone told me that this solution is studied for a known issue with Philips screen, and exactly blank screen not fl ickering.
In any case it didn't work for me
I'm starting to think that maybe it's something about new macs and Lion. I have seen discussions in which people complain about flickering issue with the new MBA.
On Monday I'll call the support and then ask for a new mac,still don't know which one,I bought mine less than 14 days ago.
Hope this will be fixed soon.

Mac mini Late 2014 screen flicking

Just got the Mac mini Late 2014 a week ago. It serves me well except the screen flicks randomly.
I have connected Mac mini to two BenQ monitors, one via mini-display port HDMI adaptor (lets said this is port A), another one via mini-display port to HDMI or HDMI cable directly (tried both) (lets say this is port B or HDMI).
The issue is, screen from port B or HDMI flicks randomly, sometimes 1 or two times within a minute, sometimes even half hour or an hour without issue.
Connection with port A is always good, no flicking, I even switched two monitors, the problem still there, so it shouldn't relate to the monitor.
I also tried different mini-display to HDMI adaptor on port B, also tried different HDMI cable, the problem still exists.
I have no idea what happened here.
Maybe something not related, but I want to mention, When setting up the new Mac mini, I tried to migrate my old account on Macbook Pro (Mavericks) to Mac mini, but It was interrupted, (the user accunt was created, but then I manually migrated some other stuff manually), not sure if this interruption plays a part in this screen flicking issue.
Any idea? Thanks for any helps in advance.

Hi there bluemoonj,
I would recommend taking a look at the video troubleshooting steps found in the article below.
Apple computers: Troubleshooting issues with video on internal or external displays
-Griff W.

Screen flicker on Mac?

My mac has developed a screen flicker. I vaguely recall this happening before but cannot remember the solution - something to do with resetting the PRAM or the NVRAM perhaps? Help the headache is getting worse!

Okay. I found a scrap of paper about resetting the SMC. It seems to have worked. I did NOT reset NVRAM or PRAM (I have no idea what these are by the way - I just trust acronyms!). The process I followed was;
1. Shut down the computer
2. Unplug the power cord
3. Press and hold the power button for 5 seconds
4. Release the power button
5. Attach the power lead
6. Press the power button to turn on the computer
Mine is a 2099 iMac with up to date OS X 10.8.5. I will report on this thread if and when the problem recurs.

How do I get rid of random screen flicker and black screen when using a late 2013 Mac Pro with a 4k Samsung 55" Display?

I have a new Mac Pro late 2013 and a 55" 4k Samsung display connected using an HDMI cable. For the most part the display is amazing, however, I get occasional screen flicker and black outs. Can anyone help? Could I possibly have a bad video card?

4K displays take more than half the bandwidth of a ThunderBolt Bus. So you may get better results if you are careful to place them on their own Bus. This article has the explanation of which port is using which Bus:
Mac Pro (Late 2013): Using multiple displays

Screen flicker Mac Mini i5 2.3GHz 2011 ?

Hi people,
Does anybody else also experiences screen flicker on the Mac Mini i5 2.3GHz 2011 model, during startup from sleep-mode or a cold-boot in the morning?
I posted a video on YouTube, to visualize the problem (otherwise hard to imagine, perhaps):
http://www.youtube.com/watch?v=5sbAhjlfN_M
Room temperature is about 15 degrees Celsius (Europe, wintertime) and the problem exposes itself when the machine is powered up after a nights sleep, or during a cold boot in the morning, the screen flashes from like the same in the YT movie, but then with the grey background and Apple-logo on it, continuing until the working desktop appears and then flashes some few more times, until "warmed-up".
When the Mac has woke up during the day, room temperature about 23-25 degrees Celsius, the screen doesn't flicker at all, or at max. 1-2 times.
The main screen (on the YT movie) is connected through Thunderbolt with an original Apple-brand mini-DisplayPort to DVI convertor and the secondary screen through a (with the Mac Mini facilitated) HDMI -> DVI convertor.
The second screen always lags a little behind the main screen and the desktop appears when the main screen desktop has fully appeared, so no flickering on the second screen noticed, till so far.
Setup:
-Mac Mini i5 2.3GHz, model 2011 with a Kingston V+100 96GB SSD and 8GB Corsair RAM 1333MHz;
-Main screen: Thunderbolt -> DVI, Dell 2005 FPW 20" IPS-panel @1680x1050;
-Secondary screen: HDMI -> DVI, Dell 1704FPT 17" TN-panel @1280x1024.
A SMC-reset and PRAM-reset didn't help, contacted Apple-support which recommended to download the generic Thunderbolt-patch DL1451, which I later recognized in my Software-update list in MacOS, as already download in October 2011, named/tagged: Thunderbolt 1.1
The Mac is already running the latest firmware, EFI 1.4 (the machine is brand new, so expected no less then the latest to be honest.)
Next step I'm going to try is: switch the screens on HDMI <-> Thunderbolt (didn't try that yet.)
Never experienced this with my Mac Mini's 2009 before (had two of them, first the 2.0GHz and later the 2.26GHz- big Mac Mini fan overhere!), running the same setup (but then on Mini-DVI & Mini-DisplayPort.)
It really feels like the internals of the Mac Mini 2011 have to warm-up, before fully functional...the Apple specs give me an operating temperature of 10-35 degrees, I'm not living in a cave, neither I accidentally forgot to turn off the air-conditioning system after the summer ended, so what the hack?
Reminds at my childhood, the time we still used B/W television @my parents home with kathode/anode-tubes in it, they also needed some time to "warm-up" before presenting a stabile image ;-)

Did you find a solution? I have the same hardware and same problem. I dont connect via thunderbolt, just the DVI-cable supplied by Apple to my TFT monitor. But without any hardware changes or updates it started a few days ago.

Screen flicker help - Mac Pro

From very early on my Mac Pro has had an issue with screen flicker.
It's more noticeable when under load but can also happen with just Safari open.
Steps I have taken so far to try and fix the problem have been thus:
1. Upgraded from 10.4 to 10.5 OSX
2. Upgraded Video card to the GeForce 8800 GT 512 MB
3. Added more Memory, I now have 7GB
4. Added new Hard Drive and made a new install
5. Reset the PRAM more times than I can count and also did a memory check.
All of these steps I have taken so far have failed to fix this problem and it's really starting to get on my nerves.
My latest idea was that it may have been something to do with the extra memory I have added over the past two years. All the modules have the same spec, 667MHz DDR2 FB-DIMM but I had a thought that there might be some incompatibility issue going on with that as some are from different manufacturers.
Could this be the case?
Also I hear from Apple Insider that an update is due soon that will carry a large update for the graphics side, will the update cover this type of issue I and some other people on here are having?

It's not heat related as it will do it from cold. I also make sure I keep the inside nice a clean with a clean out every month or so.
My first thoughts was also the cable but I have got it far away from all power cables and all transformers are at least 1m away from it.
I have moved it around using two different ring mains but still get the same issue.

13" MacBook Pro - Screen Flicker / Windows 7 Bootcamp

I have a 13" MackBook Pro with Retina display that I purchased last December (8 months old). I am running Windows 7 in Bootcamp and the last few months the screen flickers on occasion (becoming more frequent). I launched the Mac OS to ensure I have the latest updates and I believe I do (nothing new to install within the Mac OS). Majority of the time I'm hooked up to an external monitor / lid is closed, but obviously that is a challenge when traveling.
I did do some searches and see other posts around screen flicker issues, but those appear to be on the Mac OS side. What is odd about my scenario is that it only seems to appear on the Windows 7 side. I can't seem to find a fix for this / really would hate to have to reload the machine.

Running Windows 7 Ultimate x64 on my brand new 15" MBP right now.
The only problem I'm having is the USB controller issue that is reported in the following thread:
http://discussions.apple.com/thread.jspa?threadID=2411685&start=30&tstart=0
I ran the Boot Camp assistant, made the partition, rebooted with my 7 DVD, formatted the partition, performed a clean installation, & then installed the drivers from the OSX DVD when Windows booted the first time.
Replaced the NVIDIA drivers with the latest Verde release. 258.96notebook_winvista_win7_64bit_internationalwhql.exe
Everything seems to be running just fine at this point.
Message was edited by: jdamien75

How can I reproduce my screen flicker so they'll believe me?

The intermittent nature of the annoying screen flicker on my Macbook makes it difficult to show a tech that it is a real problem and not some figment of my imagination. Does anybody know of a "sure fire" way of reproducing it? I have been able to recreate the rapid dimming and brightening of my Macbook screen by moving the brightness indicator all the way to the left and then bumping it up one click. This only works sometimes and it only works when I do it by clicking and dragging on the ball on the display screen in system prefs. It doesn't work by using f1 and f2. I made a video of my screen while it was flickering and put the video on the desktop. I'm sending it in as soon as my box arrives on Tuesday. They're also replacing my stained top case. I hope they will look at the video and at least test the inverter and cable to see if they're the problem. Any help with how to encourage them would be greatly appreciated.
macbook Mac OS X (10.4.9)

I am the victim of this problem also. The screen flickering & brightness of the screen suddenly fade to low intensity. The screen flickering happened everytime I use my MacBook.
May MacBook was the initial Jun 2006 version.
I already get those problems (a) sudden shutdown (replace the logic board), (b) palm rest area discoloration (change the bottom case), (c) power adaptor pin contact problem (replace the new one), (d) poor performance of battery life (awaiting confirmation from local Apple support, 180cycle max. charge only 50% of initial capacity) & (e) screen flicker issue (today just send in my MacBook for them to do diagnostic).
I really lost confident with my MacBook.
Should I request a replacement of entire MacBook?
My warranty period will be expired mid of next month & the are asking me to purchase the apple protection plan. But, I claim that the unit is poor in initial build quality & why I should considered the plan. It is unfair to me.
If the MacBook is in good condition then I will consider the plan for support another 2 years (fair), not in this reverse way.
Anybody please guide me how to pursue this matter.
I previously own an iBook G4 & PowerBook G4 TI don't have these problem at all.
CK Lim (Penang, MALAYSIA)

27" Screen Flicker

I just got my new 27" i5 today. I am coming from a PC so I had it on all day watching the online videos and tutorials. The computer was flawless all day. I love it buy the way
This evening the family turned on the TV so I plugged in my headphones into the jack in the back and started back looking at the tutorials. Shortly after I started to get the dreaded screen flickers. I thought I was seeing things because the computer had been so great. Then it started to go to black and then back on. When I came to some tutorials with no video, I unplugged my headphones to just read the screens and then the screen immediately went black and came back on.
Long story short.....I unplugged the headphones and rebooted the computer. It has been flawless since. Could it really be that simple? The flickers have something to do with the headphone jack? Has anyone else noticed this connection too?? Or should I try to replace my computer? These are old crappy headphones to boot - I will gladly buy new headphones no problem. I hate to replace the computer.
I have already checked the notice on the graphics card firmware update - and it is already installed on my computer. Thanks for any suggestions or help.

I am experiencing similar issues with my new 27" i5. I have not seen the screen go black yet, but there are obvious flickers from time to time. I only notice the problem during/after watching videos (and yes, I have the headphones plugged in). The videos are from Netflix, so I am using the Mac version of Silverlight.
This iMac was purchased because the graphics chip on my 15" MBP started acting up a couple weeks ago and then finally failed completely. Interestingly, I was also watching videos on Netflix with that system when the problems began.
When I first got this iMac the Apple Software Updates downloaded and installed the graphics firmware update. I had hoped that would eleminate the possibility of screen flicker, but it seems that was wishful thinking.
I am going to call Apple tomorrow and see what they say. Based on what I'm reading here I'm not too happy right now. It sounds like this problem is relatively widespread.

Screen flicker/ strobbing after transfer frm FCE to iDVD

Help!
I'm in need of some advice - after editing a large video project on Final Cut Express, then burning a disc through iDVD there is VERY noticeable screen flicker/ strobing in all shots with movement i.e PANNING & TILTING.
When viewing this material in FCE there is no noticeable issues, but after playing the DVD (and watching on a CRT TV) the problem occurs.
I have tried to fix this by applying the Video/De-Interlace filter, but with no effect....any advice is most welcome
n.d I have created various other DVD's but the issues above were largely unnoticeable
The footage was shot on a Sony V1E 25fps 1080i
Laptop spec is: Mac OS X 10.5.8

The export process to iDVD sounds OK.
Do you know the option for quality iDVD was set to handle?
There are three in later versions.
These options affect quality.
I'd be thinking the size of the Project may be affecting the encoding within iDVD depending on the option used at the time.
Have you tried the Professional quality option in iDVD?
Ask in the iDVD forum for detaIls.
Al

SCREEN FLICKER COME ON APPLE!!! PLEASE!

i bought my mac book! im 16 years old my first mac book.. i love apple but... the first week i noticed a flicker.. it has now been 2 months it has gotten so much worse! i can see it flickering right now nonstop it will not stop and its very very freaking annoying... why apple will you not admit this! and fix it reseting the PRAM don't work! getting a new logic board does not work!!!!!! please apple i beg you to admit this problem and fix it! im getting so fed up with this problem i don't want my screen going out im going to be so mad if my mac book screen goes out because i cant not afford to be without of this or get a new one!, come one apple please.

yes i know but well when i first noticed it i thought it was just me, un till i was looking right at the screen and faintly saw it it was only doing it on the lowest setting and it was very very rare that it ever did it. so i ignored it about 2 weeks latter i saw it a few more times and got on here and found a post with other 100 other people saying they had the same problem and don't know what to do.. a bunch of people said they took it to apple and they said it was the logic board, so they replaced it they said that when they got there mac book back, within a week it was doing it again and even worse. i updated my firmware just now and so far... knock on wood have not noticed any flicker but im pretty sure its going to come back. the forum with other 100 replies was locked by apple for some reason, i just want apple to at least admit something is wrong with some mac books and announce that they are working on the problem.. i just really don't want my mac book dying on me i cant afford that.

I-Mac 24" Screen Flicker

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