Mini DisplayPort to Dual-Link DVI Adapter creates jumpy mouse cursor

Its not just the 30 in. monitor. I tried it on a 20 in. apple cinema display and i'm getting the jumpy cursor too under 10.5.6 . Funny enough, it doesn't seem to occur under windows... but then again, i can't seem to get windows to recognize the external display...

Add me to the list. Have you tried running 10.5.5 instead? Other users claim Quicktime choppiness with the update. Maybe the mouse thing started with the update too.

Well, no I haven't tried 10.5.5 because the adapter says right on the box that it requires 10.5.6.

Same problem here. Very annoying. Tried a variety of mice in a number of configurations. Starts happening when both the USB and DisplayPort plugs on the adapter are connected to the machine, even if the mouse is plugged directly into one of the laptop's ports, instead of the one on the adapter.

One other thing to try:

If you have the little AC adapter plug that attaches to the end of the iPhone USB cable, you can try to plug the Dual Link DVI adapter into the wall (instead of into the computer) for power to see if this helps with the USB mouse choppiness.

I can't believe they
a) Charged us $100
b) Made us wait 2 1/2 months
c) Gave us a defective product

In my opinion, this is inexcusable.

Since I purchased two of these adapters, I decided to try the other one... Same Problem.

To think I waited patiently for over 2 months for THIS!

I've switched back to my original MBP. I will be calling Apple tomorrow to return everything (the 2.8 GHz MBP, both Dual Link adapters, and a printer). This is a ridiculous thing to deal with after spending over $3000.

I guess if you want to return the machine and display adapters that's fine...

But what's the printer you bought have to do w/ the display issue?

Returning the printer, now that sounds ridiculous...

J.

The printer was free with the laptop. Do you have anything helpful to add?

Honestly, I caught the plug for this thread on Xlr8yourmac.com and was quite surprised to hear that the adapters had been hitting the streets... b/c they're unavailable anywhere online.

Where exactly did y'all purchase yours, a local Apple Store or online?

In any event, my take is they may have prematurely released them.

J.

apple.com over 2 months ago

I called Apple support to tell them all about this issue. I encourage all of you to do the same so they don't think it's an isolated incident--you'll probably get a faster fix this way.

1-800-275-2273 to talk to Apple. There is no choice for "Accessories Support" so you'll have to choose "MacBook Pro".

Be patient, because you'll have to explain to the rep what exactly this adapter is and humor them while you zap the PRAM, reset the SMC, etc.

After I hung up, I got my RMA numbers to return everything.

I still cannot understand why you would return everything... Ultimately you want this computer right? Once the bugs on the adapter are fixed are you gonna go back and re-buy it?

Seems like a lot of time spent out of spite and not for good reason. Me, this is the best Mac I've ever owned (and I've owned many. no, really.) and I'm happy to wait for this adapter w/ this machine in stead of going back to my other box.

I observed a similar client of mine w/ an iPhone... after the first week, he didn't like the keyboard and a few other things, so he took it back and went back to using his Blackberry -only to dump the Blackberry again for the iPhone, because he realized that the iPhone still did more things better than the Blackberry.

J.

I'm not returning it out of spite. It doesn't work with my existing equipment. Why would I keep a computer that doesn't work with (2) 30" monitors? That's $3600 of useless equipment sitting on my desks.

When the new laptops were announced, I didn't order because the Dual Link adapters were not yet available. I waited until they were (over two months) and then I ordered. No sense having a $3000 machine that I can't use. Now that the adapters have arrived and they don't work, I have no reason for keeping the laptop. When/if they start working then yes, I'll re-buy. I'd rather hold onto my $3K than Apple until that happens. My warranty will start later, and they may have even introduced a revised model by then.

I've owned every single laptop since the Wallstreet G3, but I wouldn't consider owning one that I can't use. Until this adapter issue is worked out (you'd think the 2 months they already took would have been enough), I will continue to use last year's model.