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Fix for poorly performing Magic Mouse on some Mac Pros Other Hardware
When the Magic Mouse came out, I was first in line at the Apple Store to try (and then buy) the heroic rodent that would spare me the aggravation of the Mighty Mouse. It worked fine at the store, but when I got home and tried it on my Mac Pro 1,1 machine, my unit was jumpy and stuttery -- essentially unusable. I read some reports on the Internet about how to make it work better using a USB Bluetooth module. I was just about to buy one when I found the suggestion below.

It turns out that the Magic Mouse is fine, it's the Mac Pro that has problems. This issue is not, as is commonly reported, that the metal case of the Mac Pro impedes the signal. In fact, the antennae are hooked up incorrectly in many of the units.

This is where I found the steps below:

A number of Mac Pros were shipped with the antennas incorrectly connected which led to many users to have Bluetooth connection problems. They were incorrectly connected as follows:
  • Antenna '1' connects to the top connector of the AirPort module.
  • Antenna '2' remains unconnected.
  • Antenna '3' connects to the bottom connector of the AirPort module.
  • Antenna 'BT' connects to the Bluetooth module.
While the wireless signal worked fine this way, Bluetooth performance was seriously hampered.

I checked my motherboard and in fact, mine were incorrectly connected as listed above.

I powered down and reconnected the cables as follows:
  • Antenna '1' connects to the Bluetooth module (if present).
  • Antenna '2' connects to the upper airport module (if present).
  • Antenna '3' connects to the lower airport module (if present).
  • Antenna 'BT' remains unconnected.
I had to remove the SATA drives and it took a few minutes of cursing to get my fat fingers to correctly position the microscopic connectors but I got it, rebooted, and I am now typing this with a wireless keyboard and magic mouse, both performing flawlessly!

[crarko adds: I haven't tested this one. We previously ran this hint and Kirk McElhearn documented the issue here. Since there are a lot of folks buying the Magic Mouse now, not knowing there is a general Bluetooth issue with these Macs, it seemed worthwhile to repeat it for the specific case here, if people are searching for the Magic Mouse.]
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Fix for poorly performing Magic Mouse on some Mac Pros | 12 comments | Create New Account
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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: arti.66 on May 19, '10 08:59:15AM

I can confirm this. I had exactly the same problem with my MacPro1,1.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: jhnon on May 19, '10 12:59:16PM

I also had this problem, but with a MacPro 2,1. This solved it!

Thanks for posting! The jumpy pointer was driving me crazy, and I nearly had given up finding a solution.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: wscody on May 19, '10 02:11:00PM

I can also confirm this with my mid-2006 quad core Mac Pro. I just purchased the BT card, and installed it (along with the requisite cursing), and BT performance with the MM was horrible. I did the antenna swap, and everything works fine.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: robogobo on May 19, '10 04:02:02PM

This has been a recurring issue since 2006, and was covered extensively on macfixit and ifixit ever since. I'm surprised it only showed itself with the magic mouse. I had switch my mac pro's antennas within the first week because of poor reception with my keyboard.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: poenn on May 20, '10 01:48:46AM

That was kind of off-topic... :-)

But great hint. I will remember this should I ever get a Mac Pro. Thanks!



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: BMarsh on May 20, '10 11:09:23AM

It is spam, or posted in the wrong area... and if you think it is useful, get Handbrake which is free and converts video nicely to iPod/iPhone/iPod Touch format.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: poenn on May 20, '10 01:22:36PM

I meant the original hint to be useful, not this unrelated reply. :-) And yes, I prefer RipIt and Handbrake, too. :-)

Edited on May 20, '10 01:23:12PM by poenn



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: aubreyapple on May 20, '10 09:28:27AM

I think that this hint does not apply to the early 2009 nehalem MacPro. I actually hope I am wrong, so I can improve things although my Magic Mouse is not all that bad. I also read that a solution is to remove the battery cover from the Magic Mouse. I have no way of telling the signal strength change as I cannot find any applications to measure Bluetooth signal strength, so I do not know if it is really useful or not.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: frenchfries on May 21, '10 06:51:40AM

I have a 2009 Mac Pro (where supposedly switching the antennas doesn't work). I can say that removing the battery plate improves performance, but still the mouse is not very usable. I have my MP on the floor to the left of my desk (which is metal and wood). The MP is about 1.5 meters from the mouse. If I move the mouse to the left of my keyboard, the mouse works fine. Too bad I'm not a lefty.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: saintel on May 24, '10 02:35:04AM

Had exactly the problems described here with Magic Mouse.

Did rewire as detailed and now everything works perfectly.

Thanks for the suggestion.



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Fix for poorly performing Magic Mouse on some Mac Pros
Authored by: brh on May 28, '10 05:02:27PM

My 3,1 had the same issue, it became apparent long before the Magic Mouse in my case… But yeah, at first when I had the computer open, and I was reading about it, I thought 'no way!' but… yes, way…



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PERFECT!!!
Authored by: dknox on Aug 07, '10 02:31:49AM

I just want to say thank you so much!! This worked perfectly for me and now everything runs smooth! Just in the knick of time too because I was about to drop kick this thing. Thanks again!



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