Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

27" iMAC - post here if you flicker post firmware update

I have not experienced any flickering since doing the firmware update :)

Sorry to hear the update hasn't been working for others :(


UPDATE: The screen went off and back on for a brief second and it has flickered once in the lower portion of the screen, bottom line, the firmware update hasn't fixed anything :mad:
 
Imac Flicker persists, unusable

I have a CTO 27" i7, week 51, and did not notice the flicker pre-update, but i very quickly updated everything when i first turned it on so cannot say whether it was there beforehand or not.

Regardless, it is now flicking with 3" horizontal bars in different sections of the screen persistently once every 1/2 minutes and I just had my first screen blackout for 3-4 seconds of complete blackness. It is completely unusable.

I waited 2 months and 1 day exactly for my mac which I ordered on 21st October and was consistently delayed.

To say i am dissappointed would be any enormous understatement, and despite my love for Apple and significant involvement with their sales in the UK, I am EXTREMELY upset.

This is my 7th Mac over the years and this will most definately be going back, and never had to do that before.

This is completely unacceptable for something that costs over £2000, apple should be ashamed given the number of users suffering.

Must do better Apple!!


UPDATE :-

So I just spoke to Applecare in the UK about the screen flickering issue on my Imac 27" 2TB i7 which persists and I believe only started after i installed the update.

The Applecare representative confirmed it was a known issue and that if the Imac was still flickering after the update(which it is) then it was a hardware fault.

I pressed him on the issue and he stated very specifically that for most users the issue is a software fault relating to the graphics card that can be fixed via the update, but that for others, if the update does not fix it, then it is a hardware fault not relating to the graphics card, but to the backlight itself.

I have not heard the backlight being discussed on the forum as yet as a source of the flickering so interesting to see what you think.

Either way, Apple said it would need to be replaced


P.S - Interestingly upon power up this morning I have not yet had any flickers, although must have had 100+ yesterday.

The Imac is very cool today at the top on the back, which was extremely hot yesterday when the flickering was occuring. Anyone else noticed the same thing? Could it be heat related?
 
Yes the Nvidea 21.5 has the issue. I own one. I not only have Yellow Tinge but Screen Flicker as well. It took 5 days before it started to Flicker. It's NOT the ATI card!
 
MacDaddy2007 said:
P.S - Interestingly upon power up this morning I have not yet had any flickers, although must have had 100+ yesterday.

The Imac is very cool today at the top on the back, which was extremely hot yesterday when the flickering was occuring. Anyone else noticed the same thing? Could it be heat related?
Click to expand...

Mine is similar. Sometimes it just won't flicker and behaves, and other days it just goes in to a frenzy.
 
peskaa said:
Mine is similar. Sometimes it just won't flicker and behaves, and other days it just goes in to a frenzy.
Click to expand...

Same here. It was puzzling. After the update, I had a trouble free day and a half. Then my i5's flickering and blackouts started again -- they usually started a couple of hours after start up or waking from sleep. The flickering was much more often than the occasional blackout.

Waiting for my 2nd replacement, Apple received and completed my RMA on Dec 31 and have an estmated ship date of Jan 13. I sure hope it ships sooner than promised. I really, really miss that computer! Aside from the difficulties and as I've said before, it was the best computer I've ever owned (first Mac).

I have to say Apple Support has been excellent. I feel very confident they will make this right.
 
MacDaddy2007 said:
P.S - Interestingly upon power up this morning I have not yet had any flickers, although must have had 100+ yesterday.

The Imac is very cool today at the top on the back, which was extremely hot yesterday when the flickering was occuring. Anyone else noticed the same thing? Could it be heat related?
Click to expand...

Hi from Spain, my iMac 27" arraived on january the 7th, and has pre-installed graphics patch, but my screen when runs too hot (for example after installing big programs on HD) starts flickering.

So I think flickering problems my be relationship with a cooling issue :S

Regards 8of9
 
my week 47 started flickering 4 days after purchase.
I just exchanged it for a week 53 (week 1?) and I'm hoping for the best.
I'll post back here if I continue to have problems.

Edit: the guy next to me was in there with the same issue. his was a week 2 according to his serial number.
 
My iMac is flickering like crazy- the firmware update was preinstalled.

Edit: I reset my PRAM and NVRAM. It's not flickering anymore.
 
Week 53 i5

-brought it home, turned it on, 15 minutes later heavy flickering on the first day, disappeared after restart

-4 days later did it again

-worked ok for a week .... using it 15+ hours a day NO PROBLEM
it was back again today after starting it up for 5 minutes

Conclusion: it CAN'T be a heating issue if I've been using it 15+ hours a day for a week with no problems, it's always happened to me a few minutes after I started the computer
 
My week 2 iMac i7 didn't even have a firmware update to download, even after a fresh reinstall of OS X, unless I didn't notice it when I did the updates? Usually firmwares requite special permission and all that stuff... Did I not get it or are I dumb?
 
WilliamG said:
My week 2 iMac i7 didn't even have a firmware update to download, even after a fresh reinstall of OS X, unless I didn't notice it when I did the updates? Usually firmwares requite special permission and all that stuff... Did I not get it or are I dumb?
Click to expand...

The firmware update was released on December 21st, 2009 so your week 2 machine shipped with it already applied.

As for me, I never had a flickering issue with my week 47 i7 so I have yet to apply the patch and no plan to do so.
 
Me too, but i have only seen it in wow, and only really the last couple of days, not before. but now its tearing really bad and it flickers too. not just at high but low settings. fps are 60 - 110.

Im starting to fear the graphicscard is crapping out allready.

i got the i7 mid december.

Anybody else have it like me? i dont have any probs in safari or any osx. seems to be gpu related.
 
Problems, problems, problems

I bought my 27" i5 iMac back in December and experienced some screen flickering, I then installed the patch and it seemed to disappear. However every so often it comes back and is really bad, flickering every 10 seconds or so and every minute the dock jumps to the top of the screen.

This is really odd, I had my machine on all day and it was fine, but I switch it on this morning and after only 3 hours or so the flickering begins.

I really like the computer, but after spending so much money on my first Mac, I'm beginning to wonder if it was worth it...

Do we know of any other possible cures besides sending it back? I've got AppleCare but I really cannot be without my computer for a week.

This is really annoying and I never experienced problems like this that I coulnd't easily fix with my PC. Oh yes, and I have reset the PRAM to no avail.
 
Did it happen to be the SSD Drive?

Did it happen to be the SSD Drive causing the problem? I had no problems with the display until I installed the SSD Drive.

gb1631 said:
Well, my i7 is back from the Apple store. I picked it up tonight as the cable and screen they tried to order wasn't available for a while. They did run some stress checks, on the iMac and couldn't get it to flicker.

I had them install the firmware update and after it was installed had them reset the Pram.

So far so good, I have had no flickers or blackouts since starting it up it's been on about two hours now.

I'm hoping that the flicker is fixed now; however I will be monitoring the screen closely! :rolleyes:

My iMac i7 never did have any of the other problems outlined on the myriad of threads on the i7's problems.
Click to expand...
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back