MPB 13 early 2015: keyboard, trackpad stopped working

Hello

I am currently (not quite happy) owner of a Macbook Pro 13 "retina, early 2015, I bought about a year ago.

After a few months of use, the keyboard and the trackpad started to behave erratically:

  • Sometimes the trackpad may stop working.
  • At other times, it is the keyboard that wouldn't work.
  • But most of the time, the keyboard and the trackpad would be lacking.

A few observations:

  • The question would appear only when I start the computer, or when he wake up from its sleep.
  • When the keyboard and the trackpad has decided to work, they have worked perfectly until I put the computer to sleep or shut it down.
  • Trackpad and keyboard work as expected.
  • Initially, the problem would appear only from time to time, but then he began to be more frequent to the point where the keyboard and the trackpad would never work.
  • During the first week little encounter the problem, plug an external USB device, such as a USB drive, managed to move things to the top and the keyboard/trackpad would raise from the dead. Alas, once the problem became permanent, nothing seems to fix.

What I have tried or verified:

  • I did tried to reset the SMC, NVRAM nothing helps.
  • Boot in single-user mode or failsafe don't change anything.
  • I did check for misbehaving kernel extensions and found nothing. All extensions of kernel in use are Apple.
  • The problem is not related to the installation of third-party software - the set of installed applications is quite small and rarely changes.
  • Hardware diagnosis do not have any problem report.

The problem became really annoying that I had to tote around an external keyboard and the trackpad - sentence a satisfactory 'solution '.

I ended up going in an Apple store, where I was recommended to send my machine for repair in a 'Premium' authorized Apple service center. This service center could not find the question

(Apparently hit answer by accident)

This service center could not find the problem, and they ended up replacing all of the top folder (including the keyboard and the trackpad). It was less than three months ago.

Initially, it worked flawlessly... until a few weeks ago, when he started to raise its ugly head again. Just from time to time at first, but now, I'm at square one, with a keyboard and trackpad completely non functional.

A few interesting notes:

  • Again, I have reset the SMC (using the internal keyboard) without success. I want the SHIFT, control option keys and press the power button. Light on the magsafe plug changes color for some time, which indicates that the MSC has been reset indeed. In other words, the system correctly detected that user have pressed the shift, command, and option keys.
  • I then tried to reset the NVRAM. But not the operation fails. Once the computer is on, it seems that the keys are not yet detected. Same thing if I try to boot in single user mode or failsafe. I can only do it by using an external keyboard now. Starting in integrated security mode shows me some cute photos asking me to activate my bluetooth keyboard and trackpad.

Let's take a look at system.log.

When the macbook, boots or wakes up from his sleep and find the interface for device series, we are greeted with a message similar to:

21/05/16 22:49:27, 000 kernel [0]: Apple keyboard internal / Trackpad::start successful start

These are the days of beau. However my logs are now filled with messages from the AppleHSSPIController. As I write this from another laptop, I can't paste the log messages

Tags: Notebooks

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