Q: Bluetooth problem with OSX Yosemite: Magic Mouse and Keyboard

While it hasn’t solved the problem completely, my lagging is now reduced to just a few moments when first starting an app or loading a page or when it’s under heavy load working on something. I did 2 things I’m not sure which made any difference. First in the bluetooth preferences I turned on the reception of files over bluetooth thinking perhaps that would keep the blue tooth background helper app awake listening for those kind of connections. Then I reniced the “blued” app in the background to the highest priority though i’m not really sure that made any difference. You can do this by finding it’s process ID with the activity monitor and then in the terminal doing a “sudo renice -20 (the id you got from activity monitor)” -20 is the highest priority.

My machine is still frustrating on occasion but seems more usable. That renice wont survive a reboot, so if thats what did it you’ll have to do that again after rebooting. It’s worth a try.

Hi Danny,

I had the same issue. It seems like this problem occurs from bluetooth (you can check if your bluetooth is working properly from About this mac > System Report). And everything were solved by resetting SMC Intel-based Macs: Resetting the System Management Controller (SMC).

Hope this help,

Nash.

tried the SMC reset and that did not solve my version of the issue at all.  Still just as laggy as ever.

The only seems to happen to me when running off the battery - When plugged into power it is fine :/

[Edit]

Ignore, I saw the original post stated it is when on battery....

I can confirm this though - Hope theres a proper fix soo.

actually, the best and longest lasting fix I’ve gotten for any of this is just to turn bluetooth off and then back on again whenever it happens.

I am having the same issue since I installed Yosemite. My mouse is not an apple mouse, but it has worked fine for the past 4 years (good mouse in my experience). It is a Sony VGP - BMS30 Bluetooth mouse. Every time I open my computer, I have to restart it in order to get the mouse to connect from scratch. I have to erase the connection before  I do by the way. I hope they solve this issue ASAP.

I have the exact same problem with my late 2012 mac mini and Apple keyboard and magic mouse. no solution...

frustrating!!

It's actually not a problem or issue.
Apple has implemented another battery saving feature by turning off the bluetooth connection every 3 seconds or so as they promised an higher battery life in Yosemite and whatnot..
I have the same thing on my Macbook Air when I updated and it is seriously ******* me off.

I'm having the same problem with the 'stutter' effect of Bluetooth.  Apple wireless keyboard and mouse, Bose Soundlink speaker.  0.5 - 2 second intermittent disconnect. Initially thought is might be part of the Apple/Bose stouch but it is happening with the Apple devices too.

The only solution I have found is, as Ricardo said in an earlier post, removing all the Bluetooth devices, restarting the Mac then rediscovering the devices.  Having to do this daily at the moment. A real pain. 

One interesting addition.  My MacBook Pro has discovered itself as a device and is now trying to pair with itself.  Just wondering how and why that might be?

Hi folks

After upgrading my iMac (27", Late 2012) and my son's MacBook Pro (Retina, Mid 2012) over the last few days, we experienced this lag on magic mouse and wireless keyboard, i.e. bluetooth devices, on the MBP. The iMac was fine.

The good news is - I've cured it.

The bad news - yes, it took a long time!

I tried all the stuff on forums and nothing provided a fix, not even a temporary one. Then I raised a call/had a chat session with Apple - here's what we did:

• Disk Utility - select Mac HD - 'Verify Disk'
• It found errors
• Restarted holding Command-R, went into disk utility and fixed those errors
• They fixed cleanly for me
• Then, yup, I reinstalled the OS
• and waited
• and waited
• And re-started
• And let it all settle down.

Result! The MBP now has no bluetooth device lag.

So, sorry guys, you might not like it. However, it looks like a disk fix and OS reinstall is really the quickest way to fix this issue. You could spend 2 hours doing this, or many more hours searching forums for tweaks and tests. It might seem a bit of a sledgehammer to crack a nut, but hey, if it works, so be it.

Hope it helps others.

I'm not sure about your advice, i already tried this 2 days ago. Exact same procedure! Disk repair, fresh install,... The problem went away, that's right! But yesterday evening it was back!

Yep, not sure about re-installing everything as it looks like a bug in the

BT energy management.

I hope Apple with do a patch ASAP. By the way, where can we submit a defect

for that ?

On Tue, Oct 21, 2014 at 11:34 AM, Apple Support Communities Updates <

Thanks for posting but I think it's some sort of bug.

Anyones knows where to open this defect directly to Apple?

I'm on a MBP retina 2012. Same problem. Magic mouse and keyboard disconnects randomly, and often, and wouldn't reconnect. Only restarting works.

I believe I'm having the same issue with Bluetooth and my Logitech K760 keyboard. It intermittently loses connection, pops back in, loses again, etc, etc. Its virtually unusable.

Hopefully, a bluetooth fix will solve the problem...and hopefully Apple recognizes this is an issue needing fixed quickly!