Magic Mouse disconnects

it started after installing Yosemite public beta 3.

I am having the very same issue. Brand new i mac. Don't recall if I had the problem before upgrading to Yosemite but I upgraded pretty much right away.

The mouse regularly disconnects and then will reconnect after I click it a few times. Most frustrating. Not connected to lifting up the mouse. New batteries didn't fix the problem. And it will happen in the middle of my working on a document or excel file so I don't think it is an issue of in-activitiy.

I think Apple must have a bug somewhere -- hopefully they will read this chain and look into this.

Same this has been happening to me before and after Yosemite! MacBook Pro 2012

Batteries are good, contacts good

PRAM reset, problem came back a few days later

Very intermittent problem... "Connection Lost" few seconds later "connected"

or drops connection to mouse and will not come back until power the mouse off/on!

I was having the disconnect problem with two Magic Mouse(s) (Mice?). I fixed both of them with a bit of White Vinegar on the battery posts inside and they both work like a champ now.

Of course, make sure you have fresh batteries.

I have the very same issue with my Magic Trackpad. If I recall correctly, this is a known issue with Apple in OS X Yosemite 10.10. I'm using the Mgic Trackpad since I bought my Macbook Pro (mid 2012) and never had any issues. Since I started testing the Yosemite Beta and running Yosemite, the problems started to occur and didn't go away.

Batteries are ok, connection should be excellent (both are next to each other without any other Bluetooth devices near it) and I already reseted it a couple of times.

I regularly check for updates but there hasn't been one yet. I will try to clear the PRAM and come back to you A.S.A.P..

I'm having the same problem.

I have a Retina Pro from mid-2012. I have been using it and the magic mouse both for two years. When the problem first began, it was easy to fix - the mouse would spontaneously disconnect, and I would lift up the mouse, click it once, it reconnected immediately, and I would just keep on with what I was doing. It used to only happen every once in a while, but it's been gradually getting more frequent to the point where over the last week I have basically switched back to using the built-in trackpad because it is more efficient than trying to make my mouse wake back up and connect so I can keep going with work every 2-3 minutes. I just changed to two fresh Duracell batteries, and also just reset the PRAM as mentioned earlier in this thread, but the problem continues. One thing - I seem to have noticed that basically if I ever pick up the mouse, like I do a hundred times a minute to move the mouse further along the screen than my mousepad / wrist go, it immediately disconnects. What the heck is going on?

Also, it sounds like I'm having the same problem as everyone else in this thread, but I'm running Mountain Lion, not Yosemite, so maybe there are two separate problems going on here? I see I'm not the only person who had problems before Yosemite.

If anyone has any recommendations for a different wireless mouse that does *not* have this problem but is Mac-friendly (had a bad experience installing a Microsoft mouse onto a previous MacBook), please let me know!

This keeps happening to me too. The batteries are brand new and it shows 96% battery availability. But it keeps disonnecting (Apple bluetooth mouse) and I keep reconnecting it and then it reconnects again.

It worked fine until very recently.

It's driving me nuts as I loathe using trackpad and it's slows me down.

I tried doing PRAM - shutting down and then starting up holding command plus R and P - but I don't think I did it right as PRAM didnt' come up on.....

It's a new mouse, only few months old.

I'm on 10.9.5

Help!!! Thank you.

Okay, a little feedback. I resetten the PRAM and got another issue, no sound!

My mac wasn't able to adjust my sound settings va the buttons nor on my Mac. Ik reinstalled my Mac and updated it fully, no results. After a week it just cam back as miraculously as it stopped....

Strange devices..! Luckily the sound came back. The issues with the Bluetooth input devices (my trackpad) still doesn't work properly.

And what if this is not a software issue but a hardware issue?
Did anyone tried to but some paper between the batteries?
many people fixed their mouse by doing this!

To get this to work I did the following:

1. Turned off Bluetooth

2. Turned off Wifi

3. Turned on Bluetooth (setup pairing before turning Wifi back one)

4. Turned on Wifi

After step 3, the bluetooth prompted me to pair with my magic mouse. It seems like the Wifi issue mentioned earlier could be conflicting with the bluetooth. Disabling Wifi solved my problem.

This solution wouldn't work for me as my desktop Mac is on ethernet.

My mouse keeps loosing connection and then reconnecting after a couple of clicks.

I've tried the batteries, reseting the PRAM & SMC, tin foill on the battery points & folded paper in the mouse.

Even tried a brand new mouse.

Everything was fine until I updated to 10.10.2

I'm buying a new mouse.... that doesn't use bluetooth.

I'm selling the Apple mice I have on ebay... right now I'm using a old Apple wired mouse.

The joy of tech ; )

Has anybody tried the steps mentioned in this Apple link?

OS X: Bluetooth devices become unresponsive - Apple Support

I've got two systems (an iMac and a mini) both with Yosemite and both experiencing the intermittent bluetooth disconnects, that only happened after upgrading to Yosemite. I have tried everything else mentioned in this thread, with no permanent solution, so I'm going to give what's listed in that Apple link a try next.

This issue has just started for me as well after installing the Yosemite Beta 3, if this has been a known issue you would think they would have fixed it before releasing photos, my word!

Yosemite has to be the worst OS I have ever used, I have lost whole days of work just trying to sort out issues.

1. USB keyboard would not connect; ended up using Bluetooth keyboard, which unfortunately does not have extended pad.

2. Core audio did not work, very stressful when your profession is music. Issue sort of fixed but core audio seems very buggy, lots of glitches and drop outs. Definitely not my interface as it works seamlessly on other systems, plus it does the same through internal speakers.

3. Freezing on startup, just began after 10.3 update

4. I blamed Virgin for Wireless connection, maybe they have been getting grief for nothing - sorry Virgin! Come to think of it, this did start happening when updating to Yosemite.

5. Magic mouse keeps losing connection, this has only started happening on 10.3 update.

6. Although I cannot say it is an Apple issue, I used to be able to run FW800 audio interface at very low buffer settings on a 8-core 8GB RAM 7200RPM HDD Mac Pro with Snow Leopard. Now on a 12-Core 64GB RAM PCIe SSD Mac Pro I get dropouts all the time even on large buffer sizes, even though CPU etc are not even hitting 10%.

apple keeps getting worse and worse by the day.. i didnt pay that much money to sit down and resolve bluetooth issues i never had before updating the system.. time to move to windows.. apple is not pro anymore.. im sitting in my studio with a client loosing studio time because apple screwed up bluetooth and wifi.. which has been going on for a while now.. seems they dont know what they are doing...

you are costing us money with the silly features u keep adding screwing up something like mouse !! do people in apple actually use their computers?

I noticed my trackpad skipping a short while after installing 10.10.3 - now it becomes totally unusable at times, and sometimes even disconnects. I've tried removing it and re-pairing it. The batteries are new and fully charged.

This looks like a software issue, I hope they patch it. Using my backup Logitech Anywhere MX *****!