|Apr 15, 2009, 12:02 AM||#1|
Mac Mini 2009 3,1 Graphics Pausing Stuttering Issue
Hi, I was wondering if anyone has experienced strange stuttering issues when using the mini - displayport adapter on a 9400M based mac.
I have a month old mac mini that will pause for about half a second every few seconds whenever doing anything even marginally graphically intensive. All video playback (even low ipod res) under quicktime and vlc stutters this way. Dragging a window around by the mouse stutters this way. A large progress bar (because they oscillate colors) stutters too.
I have two 24 inch BenQ FP241W monitors connected to this mini via miniDP->DVI and miniDVI->DVI adapters. Both run at 1920x1200@60Hz.
I have tried the following to no avail (in this order).
1) Hardware Test from CD
2) All System Updates available
3) Reinstalling Leopard from disks. Even on "erase and install" problem is still present. Even more ridiculous is the fact that the leopard installer progress bar is too graphically intensive and triggers the stuttering.
4) Zapped PRAM and PMU.
5) Replaced system memory with alternate 4GB. I thought this might help since video memory is shared with system memory but no luck.
I had a brief talk with Apple today. They seemed baffled and suggested I zap PRAM and PMU again. They want me to take it to the nearest apple store, but that's 90 miles away, so I'm hesitating a bit.
Edit: I've put up a couple of movies I've filmed with my macbook pro's isight.
In the first movie, the progress bar pauses. In the second, the window really does jump around that much when dragging it around.
Last edited by afterspark5; Apr 15, 2009 at 12:39 AM.
|Apr 15, 2009, 06:20 AM||#2|
I guess your only option is to take it to the Apple Store and get it replaced. Likely a hardware issue. Could be your graphics card.
iPhone 4 32GB Black
iMac 21", 4GB RAM, 1TB HD
|May 20, 2010, 04:53 PM||#3|
Did you ever figure out what the problem was? A similar problem just appeared with my 2009 iMac 24" when using the DisplayPort. The whole system stutters for a split second in regular intervals when I have an external display connected but powered off. If I turn the other display on, the stuttering disappears.
Mid-2010 15" MacBook Pro / 2.66GHz / 8GB RAM / 240GB SSD
16GB iPhone 5
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