SPI Keyboard/Trackpad on MacBookPro12,1 Not Working after 10.11.3

I have exactly the same issue. Did you find any solution in the end, kcculhwch?

Same here. After 4(!) repairs, Apple exchanged my MacBook Pro for a new one. Now, the new one is starting to show the same symptoms. Heading back to the store soon :/

Yep, I've got this exact same issue. Got progressively worse since 10.11.3. Got to the point where nothing a SMC/NVRMA isn't guaranteed to fix it.

Curiously, this problem exhibits itself in Windows 10 via Bootcamp also.

Good/bad new: I just came back from the Apple Store. According to the genius, this problem caused quite a discussion behind closed doors at the store today 😉 When she came back, she told me, that another and another repair will not solve the problem since this is clearly a software based issue. It's apparently not uncommon with 2015 Retina MacBook Pro models. Currently, there's no fix, according to the genius. Her only hope was a future software update. I assume this is a firmware thing, since macOS Sierra PB1 has the same issues. Her only advise for me: Call AppleCare, ask them to take the device back for a full refund and either pick a different model or wait for the next generation. So that's what I am up to now. Stay tuned!

Cheers for the info, this is going to make my Genius appointment very interesting. I mean right now, my machine is pretty bloody useless!

Mine started to fail in the same way, after 1 year on intense use.

Resetting SMC/NVRMA did not work

Reinstalling OSX did not work

The guy at the Apple Care Chat suggested to delete the disk and perform a fresh OSX installation. Anyone has tried this? and... did it solve the issue?

The reinstalling of the OS didn't help in the slightest. It did seem to be fine for a couple of hours, but then died again.

So, couple of weeks later, Apple just called me back. I am getting a full refund since this problem cannot be solved at the moment. I am lucky to still have an older MacBook Air that will serve as a replacement until Apple releases a finished MacBook Pro 13".

Well good news for you. In my case I'm out the year warranty so no good news for me. U$2,000 for a 14 months of use, and now to the garbage 😟

Luckily for me was just £55 for a replacement ribbon cable. Fingers crossed it stays working.

Well, I bought mine in may 2015. Luckily, after so many failed repair attemts, Apple gave me a new Mac, restarting the warranty cycle. Have you checked in your Mac for repair before? If Apple was unable to fix it, you might be lucky too. Also, since they have finally recognised this problem, an out of warranty exchange might not be impossible. I am actually thinking a general recall program is around the corner.

Well, that may be possible. I'll get an 2011 MBP to work during the revision time. I'`ll let you know how it goes.

I deleted the HD and reinstall: same issue

I installed Bootcamp to see if Windows makes any difference... no issues in 18h with MacOS X

Will see tomorrow

36 hours without getting the issue.

I have had this same issue 3 times on 2015 Macbrook Pro Retina 13". It always starts the same. Suddenly upon wake the touchpad stops "clicking" and maybe it will work again randomly after several minutes of usage. Sometimes the keyboard and touchpad both stop working altogether. Eventually, after several days or weeks of random behavior they both just stop working and no amount of rebooting helps. Today I began experiencing the issue again, for the 3rd time. I was able to get going again this morning with the SMC reset, but in the past that has eventually failed to work

Each of the first two times they replaced some cable in the laptop, as mentioned by someone else in the thread. It always comes back. 😟 I have not taken it in to apple for this third occurrence yet, but my hopes are pretty low that they can fix this.