13" Retina Macbook Pro slight trackpad lag

Well I "fixed" it, but now my bluetooth doesn't work but I don't use it anyway.

I don't recommend this at all I was just playing around with some hunches I had.

I played around with kernel-extension and removed some kext's and suddenly it was gone, but it was like I had an external mouse plugged because all the scrollbars were visible (I had "show all scrollbars when mouse plugged in" setting on, changed now). I have since restored all the kext's but BT still doesn't work (it says disconnected). But computer feels more responsive and fluid. Mouse, keyboard and volume buttons doesn't lag.

I THINK it was IOBluetoothFamily.kext and IOBluetoothHIDDriver.kext that "fixed" it, not sure though, I removed some AppleUSB- and IOUSB-kext's too 🙂

So heres what I did (you need admin-password), again, NOT RECOMMENDING THIS:

- in terminal:

sudo touch /System/Library/Extensions/

- in finder go to /System/Library/Extensions

- Copied the kext's to some safe place

- Removed the kext's from /Extensions

- Did a SAFE EMPTY TRASH

- Reboot

- Copied the kext's back in and reboot again (not sure if this did anything)

I would say do one kext at a time cause I'm not sure which one it was that "fixed" it, if someone wants to test some it would be cool. But heres the kext's I removed (caused I was ****** and just wanted something to happen) again NOT RECOMMENDING, DON'T BLAME ME IF OS X DOESN'T LIKE IT 😟:

IOBluetoothFamily.kext

IOBluetoothHIDDriver.kext

IOUSBMassStorageClass.kext

IOUSBAttachedSCSI.kext

IOHIDFamily.kext (I THINK, can't remember 🙂)

AppleUSBTopCase.kext

AppleUSBMultitouch.kext

AppleHIDKeyboard.kext

AppleHIDMouse.kext

This is great news! Thanks for being proactive about it. Now what's the best way in getting this info to apple?

No worries about the BT. I think just reinstalling Yosemite will fix it but I'm worried it will bring back the mouse lag. One goal of the test was to disable the BT hardware to see if it made any difference and I guess it did?

Thanks for the 'fix'! I was able to get rid of the lag by deleting the two IOBluetooth .kext's. Now only if there was a way to just disable the sleep behavior of the trackpad/keyboard.

Hi, is there any chance to have this issue solved by Apple? This so far the only flaw I have found on my new Macbook pro retina mid 2014. It is not that annoying as it might seem but still, it`s a flaw which is unacceptable for a premium price device. If I wanted to solve this, I`d go for a PC.

Don't change your macbook for a PC because of that. If you have a mini usb dungle for mouse by example, you can plug it to the mac and it do not take much space. This is was I'm doing until Apple fix that problem. 🙂

As I'm not into computers that much I have to ask: Does that mean it's hardware or software related? Why doesn't the 15 inch have this problem? Do they have other kernel-extensions?!

No way I`m coming back to the claws of PC. I am absolutely fond of every single little feature of Mac OS X and the rMBP itself. Suffice to say, I am a long-life Android user and Android smartphones advocate. Now, after having bought rMBP, I feel a slight craving to buy an iPhone! Just for the sake of having a Apple laptop and for the possibilities of synchronization between Apple devices. 😀 Still, I hope for this bug to be resolved asap.

I am however, having the same problem with my external Apple magic trackpad, and my external Apple Keyboard. If they are untouched for about 1-2 seconds, there is a VERY noticeable lag at first touch. Up to halv a second, every time.

This is *exactly* what I am experiencing -- bluetooth trackpad, 13" MBPR (mine is a late 2013).

Than it seems to be SW related problem and not hardware.

Okay, I figured out a workaround for my case (external bluetooth keyboard and magic trackpad). It works fine if the charger is plugged in. Soon as I unplug it, back to lag city.

So do you only have this problem with your external keyboard/trackpad or also with the internal trackpad of your Late 2013 rMBP?

In my case the built-in keyboard/trackpad are perfect, but external bluetooth keyboard/trackpad exhibit the lag.

I have no external keyboard, nor mouse, I experience this lag on the internal trackpad. 😠