MPB 13 early 2015: keyboard, trackpad stopped working
Hello,
I am currently the (not quite happy) owner of a Macbook Pro 13" retina, early 2015, that I bought about one year ago.
After a few months of use, the keyboard and trackpad started to behave erratically:
- Sometimes the trackpad would stop working.
- At other times, it is the keyboard which would no work.
- But most of the time, both the keyboard and trackpad would be irresponsive.
Some observations:
- The issue would only appear when I boot the computer or when waking it up from sleep.
- When the keyboard and trackpad decided to work, they worked flawlessly until I put the computer to sleep or shut it down.
- External keyboard and trackpad do work as expected.
- At first, the problem would only appear once in a while but it then started to be more and more frequent to the point where the keyboard and trackpad would never work.
- During the first few week of experiencing the issue, plugging an external USB peripheral, like a USB drive, somehow managed to shake things up and the keyboard/trackpad would raise from the dead. Alas, once the problem has become permanent, nothing seems to fix it.
What I tried or checked:
- I did tried to reset the SMC, NVRAM to no avail.
- Booting in single user mode or failsafe mode do not change anything.
- I did check for misbehaving kernel extensions and found none. All the kernel extensions in use are from Apple.
- The problem is not linked to the installation of third party software -- the set of installed applications is quite small and rarely changes.
- Hardware diagnosis do not report any issue.
The problem became really infuriating as I had to tote around an external keyboard and trackpad -- hardly a satisfying "solution".
I ended up going to an Apple Store, where I was recommended to send my machine for repair in a "Premium" authorised Apple service center. That service center could not find the issue
