Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

QuickTime flickering during Video Tutorials?

When I am watching the Video Tutorials for any of Apple products my QT flickers dark and light, not to the point where I can't see the video, but to the point where it is annoying. Anyone else having this problem? This is on a 4 day old new MacBook. I have the most recent version of QT installed.

Anyone else having the same issue?

Tim

MacBook 2.4Ghz Dual Core, 2 Gigs Ram, 250Gig HD, 500Gig External HD., Mac OS X (10.5.2), 60Gig Video iPod, 1Gig iPod Shuffle

Posted on Mar 2, 2008 9:42 PM

Reply
138 replies

Aug 10, 2008 1:53 PM in response to Shatterbox

This is happening across the board for me in safari, firefox, quicktime, flash, text edit, system profiler, etc...
I get ripple text and box artifact flickering. Is this a Nvidia GeForce 8600m GT issue? or core graphics issue? Does anyone have real info on this.

System info
---------------
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.6 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B00
SMC Version: 1.28f1

Aug 15, 2008 4:34 AM in response to Shatterbox

Right, time for another update -- and this time it is good news.

As you know, Apple Store Sydney took my MacBook Pro with screen corruption, flashing video and ripples/tearing on scrolling in for investigation and possible repair.

They were able to reproduce the problem while booting off an external drive with a clean installation of Leopard, indicating that it is not a software problem (at least, not a corruption of my installation of OS X -- it could possibly still be a problem baked into OS X itself.)

The said they had had a number of MacBook Pros in with a similar problem -- four or five to date, so it doesn't seem to be a problem with every MacBook Pro they've shipped, they said.

They consulted with Apple Engineering in the US and were told that there is "no fix for this problem, either through hardware or software", which they said meant Engineering was still trying to figure out what exactly was the cause of it.

So, official company line was no repair possible. However, as a courtesy they swapped the logic board out anyway.

Since I picked it up on Tuesday, (it is now Friday night Sydney time) I haven't seen any of the problems. Videos now play back without flashing white blocks all over them, scrolling is fine in Safari and all other apps with no breaking up of the display, etc.

I am happy that after my six months of owning a faulty MacBook Pro it is now back to the condition it should be in when purchased -- I'm just sorry I put up with it for so long thinking it must have been a software problem.

Note, nothing at all has changed in my software config since taking it into the store. They simply swapped the logic board and that fixed the problem.

So if you are experiencing this problem, I strongly urge you to take your MacBook Pro back to Apple to be fixed. Even if some of you do not get the same courtesy I got in getting the logic board replaced without advice to do so from Apple Engineering, the rising numbers of repair requests for this problem may make Apple realise it's a bigger problem than they think it is.

NB. details of the NVIDIA chip on the new logic board (seemingly unchanged from the chip that was on the previous board, which bolsters my suspicions that NVIDIA produced a bad batch of GPUs; the manufacturing process has now been corrected, and spare logic boards have the corrected chips on them):

GeForce 8600M GT:

Chipset Model: GeForce 8600M GT
Type: Display
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0407
Revision ID: 0x00a1
ROM Revision: 3212
Displays:

QuickTime flickering during Video Tutorials?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.