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Helpful answers
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Nov 1, 2013 12:32 AM in response to jldesignby YARGLTD,jldesign, I had the same problem and for me it was also the WACOM tablet and pen setup! As a matter of interest had you also upgraded to Mavericks? For me me the problem only occured after the install. Anyway thanks to this post all it good again. Thanks
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Nov 1, 2013 8:57 AM in response to YARGLTDby jldesign,Thanks for the reply YARGLTD. I did notice it after upgrading to Mavericks. I actually just tried plugging in my WACOM again and using it and all seems to be well and it's still plugged in. When the pen is not being used I have it at least about 12 inches away from the pad and I haven't had any issues at all. Maybe I was storing the pen too close to the pad before?
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Nov 8, 2013 7:42 PM in response to Apollo77by zmuntz,erratic behaviour started just now, out of the blue. Fixed by plugging out my Bluetooth USB adapter (I use an external, USB one) and plugging back in. Resetting the Magic Mouse did not work.
On Mavericks.
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Nov 10, 2013 6:40 PM in response to Apollo77by randall6672,I too had the erratic mouse behavior on ma MacPro's (one with Touch Pad and other with Magic Mouse). I tried serveral of the mentioned remedy methods, but found rebooting has helped for now. I have tried resetting the PRAM, but it does not seem to get the key stroke command in time form the bluetooth keyboard.
I have to say, this is the most disappointing upgrade in my history with Apple. I am ready to roll back to 10.8.5.
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Nov 30, 2013 7:41 PM in response to Gemini_74by dgra,Bless you!!
Yeah, I'm a few years late to the discussion, but here I am. I was going bonkers for a year with this
bloody magic mouse. Jumping, losing connection, sandpaper feeling on the drag. Apple of course was no help. Bought several mice thinking they were defective. Stuffed paper in the battery pocket after reading loose batteries can interfere. I knew all this was BS, because I've been using Mac's since the early 80s and can pretty much disassemble and re-assemble these blindfolded with my toes.
Well, maybe I should've taken the blindfold off, because after reading your post, I simply unplugged my printer's USB cable from the left side of my keyboard's USB input and wa la!... no lagging, jumping, connection loss. The simplest solution... Something that harkens back to apple fixes of the 90s. Yes, USB can interfere with anything and everything. I forgot. That should be the first place users look!
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Dec 2, 2013 7:24 AM in response to dgraby tcrayon,Thanks for this reply and this thread. I tried a few suggested remedies before just unplugging my USB devices. My Magic Mouse was suddenly back to normal!
Better still, I plugged my USB devices back in, and it's still working!
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Dec 6, 2013 11:11 AM in response to tcrayonby tcrayon,My joy was quite temporary. My Magic Mouse started acting up again almost as soon as I finished posting that it was fixed. I have restarted my computer more in the past few days than in the past two years.
Things I have tried include:
Removing batteries from the Mouse and replacing them.
Restarting the computer.
Shutting down, unplugging for a bit, then plugging back in, waiting, restarting. (Supposed to reset something, had no effect).
Turning Airport on and off.
Plugging and unplugging a USB keyboard and a USB mouse.
Restarting some more.
Cursing in a sailorly fashion.
Restarting even more.
Plugging and unplugging even more.
A Fonzarelli-calibrated smack to the Magic Mouse
Changing to my other Magic Mouse, which I had previously discarded when it developed this same problem.
Unplugging both USB devices simultaneously. This caused an immediate restart and a report to Apple in which I suggested they fix this issue.
With an hour or so of fiddling, I'm currently able to get my Magic Mouse to function for as long as a minute or two at a stretch before it flicks the cursor all over the screen and then refuses to move it at all. The little green light on the Mouse stays continuously lit when this happens. Then I fiddle for another hour or so. I'm not getting much work done.
I'm about done trying to use the Magic Mouse. I like it when it works, but that's just way too little of the time.
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Dec 6, 2013 1:10 PM in response to tcrayonby dgra,Sorry to hear that your still having issues. Yowza!
So... before yanking the USB printer cable from my printer, I did all of the above including the Fonzarelli smack, actually I beat the little rodent down hard on my desk, and no cheese for a week!
I have found that USBwas the issue. I have had no issues since unplugging the USB printer cable from my keyboard. I used to have issues also with my internet freezing 5 + times a day only on the computer with USB plugged into the keyboard. No mas.
Long story short; no issues anymore of any kind. I also did this down in my recording studio where I had similar issues. I had a 4-USB input powered hub in the right side of my keyboard with 4 hard drives inserted. After it was unplugged, all issues bye bye. It's been aout 10 days.
I believe USB to be the issue. It may not be all of your USB peripherals that are causing the issue, but there is likely some interference with something. Keep looking into the USB solution. As passive as USB is, it can irritate the f*#k out your system when you least suspect it. Good luck and don't let it ruin your day, your marriage or your life. People did exist and were perhaps even happier and more social creatures before Apple.
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Dec 7, 2013 10:51 AM in response to tcrayonby dgra,Maybe I was a tad overconfident in my last message because my rodent is acting up again. Here's my suggestion (and you're probably not going to like it). I keep a wired mouse at my desk in the event of...
The wired mouse never fails : )
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Dec 7, 2013 11:11 AM in response to dgraby dgra,Cheese for thought:
On the same computer, using the same magic mouse,
my wife has no latency or erratic behavior issues whatsoever. This got me thinking.
My wife is very methodical in her approach to the computer because she knows
next to nothing about it. Only how to get her emails and facebook page.
She moves the mouse only when absolutely neccessary. When I am at the
same computer, while searching through, let's say ebay, or the NY Times,
I am constantly moving my mouse around... a lot, in anticipation of the mouse's
next link to click on or when I read an email or an article, I move the mouse along each word
as I go. This is soooo common with anyone who is not a novice.
Call it a nervous habit of the experienced geek.
So, is it possible that we are just over-taxing this poor little guy who may not have been built
to run at rocket speed? Because as soon as I began slowing down, the mouse began catching up.
All this said, my wife just informed me that she will lose completely the bluetooth connection from time to time.
This however could be from when I or my daughter come back to the house after being out, both cars
using bluetooth. Garage and office are less than 20 feet apart.
In the end, the wired mouse never fails : )
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Jan 8, 2014 11:50 PM in response to Apollo77by Eric_Sc,I have been having problems with my magic mouse for quite a while. I bought, and have been using a wired mouse, but I prefer the gestures on the magic mouse (I wish they made a wired magic mouse). In any case, I figured that the problem I was having with erratic movement and hang ups was due to a hardware issue with the mouse. So, I bought a new mouse... same problems. I found this thread and unplugged a couple of USB memory card readers and suddenly my magic mouse works great. So, for grins I just turned on the old mouse and paired it too. It works just fine! I now have both magic mice working perfectly.
I had previously tried zapping the PRAM, which seemed to help a bit but things went south again pretty quickly.
I have been playing with this a while now, and the mouse is still performing flawlessly. It even seems as if my trackpad is working a whole lot better.
I have a second USB card in my Mac Pro and when I unplugged the devices from this my mouse got better. I plugged both card readers back in and the mouse still works pretty well, but I have seen some minor erratic movement. I'm guessing that the USB is the culprit.
Update: I posted the above, and then noticed a couple of typos. When I opened this post up to edit it, my magic mouse did not have the fine control I needed. I unplugged the USB devices again, and what do you know... the mouse works perfectly.
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Feb 18, 2014 6:26 PM in response to 小罗by guyo68,The little post that could... ages later, I experience the same problem and go figure - blowing a little air at the LED sensor on the bottom did the trick for me, too. Thank you!
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Mar 21, 2014 10:05 PM in response to Apollo77by crahol,So I have a wireless Apple keyboard and a wireless Magic Mouse. The Mouse has been jumping, erratic, losing connection, and generally driving me crazy. Also, my printers are all wireless. So I cannot imagine how USB could be the cause.
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Mar 24, 2014 11:27 AM in response to craholby Eric_Sc,I had the exact same symptoms. I unplugged everything from the USB ports and it got better. When I plugged stuff back in the problem returned. In my case the culprit seemed to be USB CF card readers. If you have no USB devices, try deleting your Bluetooth devices (other than mouse and keyboard). It may be that the Bluetooth tranceiver is actually a front end to an internal USB channel (this makes a bit of sense if you think about it). So, try deleting your bluetooth devices, then reboot and see what happens.
In my case it looked like the problem was caused by external devices locking up the I/O associated with the USB. In reponse the CPU seemed to time slice the channel across the connected devices. This works fine for things like memory cards, but for a mouse that needs to repond in real time, it looks like the movements queued up and then came through all at once, hence the jerkiness of the mouse and "burst mode" keyboard response.
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Apr 7, 2014 9:57 AM in response to Apollo77by gjohung,I use 4 Macs... 2 at work and 2 at home..they all do that..
I thnk it has to do with the multitouch... Or the way I grab the mouse...I cant rest my mid hand area rest on the mouse..I have to keep afloat..
ghj