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Dana Spiegel Author

Level 1

6 points

Magic Mouse keeps disconnecting from bluetooth

My magic mouse (with all updates properly installed and with USB Overdrive properly uninstalled) has a problem connecting and disconnecting from the computer. When I use the mouse for a few minutes, it will all of a sudden be non-responsive, and within a couple of seconds the "Connection Lost" message appears on the screen. If I wait another minute, and click the mouse button a few times, the mouse will reconnect. This happens periodically as I am using the computer.

In the console logs, I get these messages:

10/31/09 6:06:20 PM kernel [0eb48f00][AppleMultitouchDevice::willTerminate] entered
10/31/09 6:06:20 PM kernel [0eb48f00][AppleMultitouchDevice::stop] entered
10/31/09 6:06:24 PM kernel [0ffa3600][BNBMouseDevice::init][30] init is complete
10/31/09 6:06:24 PM kernel [0ffa3600][BNBMouseDevice::handleStart][30] Done
10/31/09 6:06:24 PM kernel [08701100][AppleMultitouchHIDEventDriver::start] entered
10/31/09 6:06:24 PM kernel [09f11680][AppleMultitouchDevice::start] entered

The first message is when the mouse disconnects, and the rest are when it reconnects.

Does anyone have any suggestions?

Unibody MacBook Pro (CTO 2.8Ghz, 4GB RAM), Mac OS X (10.6.1)

Posted on Oct 31, 2009 3:14 PM

Top-ranking reply

arunakn

Level 1

4 points

Posted on Jul 24, 2017 9:38 AM

Try this. might help

From the OS X desktop, hold down the Shift+Option keys and then click on the Bluetooth menu item to reveal the hidden Debug menu
Select “Reset the Bluetooth module” from the Debug menu list

3. When finished resetting, reboot the Mac as usual and go through the process of connecting the Bluetooth device(s) to the Mac as you typically would, everything should now work fine. (If you have another set of keyboard and mouse reset all connected apple devices and restart.)

Hope this will help.

***Thanks to our friend Keir over at MacKungFu for discovering the debug menu item ***

ArunA

View in context

241 replies

DNERO713

Level 1

4 points

Jun 6, 2016 10:14 AM in response to Cojcolds

Dude - this is TOTALLY works.....just clean the little aluminum censors. Problem all gone - thanks Cojcolds and all other who mentioned cleaning the sensors inside the MM housing. What a waste of precious design time. So happy this is fixed - been dealing with this off and on for a few years now and finally got tires and looked it up on line - even bought new MM's to resolve the problem. THIS WORKS.

Milts

Level 1

9 points

Jun 9, 2016 2:29 AM in response to Mactoyz

Thanks, Solved my issue

Jun 21, 2016 1:00 PM in response to Nick Radonic

Wow that really works, fixed it up right away. Thanks for sharing 🙂

Jul 21, 2016 6:05 AM in response to DrKolos

This worked for me! Thanks!

Aug 13, 2016 8:46 AM in response to DNERO713

what about those of us with an MM2 without a battery casing? I have tried 2 mice and they still sporadically disconnect & reconnect for no apparent reason.

BobHarris

Level 9

55,091 points

Aug 13, 2016 7:23 PM in response to craigriches

craigriches wrote:

what about those of us with an MM2 without a battery casing? I have tried 2 mice and they still sporadically disconnect & reconnect for no apparent reason.

Then look for 2.4GHz radio interference. Bluetooth uses 2.4GHz.

An over saturation of 2.4GHz WiFi base stations (apartment/condo complex)
Microwave oven (2.4GHz is the frequency that vibrates water, which is why no commercial radio service wants it, as rain, humidity, fog, etc... will interfere with long range communications, so the FCC gave it over to low power unlicensed spectrum). So a Microwave oven that is leaking radio waves could interfere with 2.4GHz radios
Poorly shielded USB3 device or poorly shielded USB3 cable <https://www-ssl.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequen cy-interference-paper.html>
2.4GHz cordless phones (could be a nearby neighbor)
2.4GHz baby monitors (could be a nearby neighbor)
Something wrong with your Mac's Bluetooth antenna
Your own Mac WiFi (for example if you use 2.4GHz WiFi, and not 5GHz). Less likely, but not unheard of.
An interference list from Apple <Potential sources of Wi-Fi and Bluetooth interference - Apple Support>
You can Google: "Mac Bluetooth interference" and most likely get some other ideas

Aug 17, 2016 3:02 AM in response to Dana Spiegel

Put some paper under the battery it will keep battery stable and not to move.

nigel31

Level 1

4 points

Oct 24, 2016 10:43 AM in response to smgs18

The cotton-bud and WD-40 worked for me. I have been having disconnection problems (several times a day) for months. Now been 3 days without a disconnection.

jedat

Level 1

13 points

Nov 14, 2016 11:29 PM in response to Mactoyz

I just deleted this file: /Library/Preferences/com.apple.Bluetooth.plist and now it's working fine. No more disconnects. Thanks!

jedat

Level 1

13 points

Nov 15, 2016 4:17 AM in response to jedat

I though that it was the /Library/Preferences/com.apple.Bluetooth.plist file. This was not the case. The batteries were dropping in and out. So i stuffed some folded paper on top of the batteries and now it's working without any disconnects.

Nov 28, 2016 7:52 PM in response to Dana Spiegel

This is could be one the reason that your Magic Mouse keep disconnecting, Watch this video:

https://www.youtube.com/watch?v=7vlDEVfV45s&t=19s&list=PLmHY6oJldGa9MUncgKoCFeer ZcUnco8hY&index=14

hec345

Level 1

4 points

Dec 13, 2016 8:18 PM in response to Dana Spiegel

It kept connecting and disconnecting. Naturally, I threw my mouse at the wall, it obliterated into pieces. I swear my computer is mocking me. "Connected" appears.

Jul 8, 2017 2:40 PM in response to Stefan42

No clue why it works but turn the mouse upside down and smack it. Reconnects immediately. I guess it just needs to know who the Alpha is in the relationship.

hanzap

Level 1

9 points

Jul 26, 2017 2:53 AM in response to coreyem

Pealing of the plastic on the top of the positive end really helped, after months of continually disconnecting. I almost bought a wired mouse to solve the problem. Thanx a million Coreyem!!

nigs67

Level 1

6 points

Oct 13, 2017 12:50 PM in response to Dana Spiegel

I found if you drop it from a high of about 2 or 3 inches it works again. Magic.

Magic Mouse keeps disconnecting from bluetooth