keyboard

Question

Level 1

8 points

keyboard

Hi There,

I've been having a very unusual issue with my trackpad and built in keyboard on my macbook air. I have a macbook air a1369 running IOS 10.11.4 with a 1.7 ghz i5 processor. I use the mac fine, but after about 30 to 40 minutes of usage, and I put it to sleep, after it wakes, the trackpad and keyboard are unresponsive. Only the power buttons work. However, if I connect an external keyboard and mouse, then work perfectly (i'm actually writing this question with my external keyboard)

additional information>

Apple Internal Keyboard / Trackpad:

Product ID: 0x024c

Vendor ID: 0x05ac (Apple Inc.)

Version: 2.09

Speed: Up to 12 Mb/sec

Manufacturer: Apple Inc.

Location ID: 0xfa120000 / 3

Current Available (mA): 1000

Current Required (mA): 40

Extra Operating Current (mA): 0

Built-In: Yes

Some other findings:

The keys can sometimes wake the computer, but as soon as it wakes up they don't work.
They don't work at boot (i.e., cmd+R, cmd+V etc do not work).
I've reinstalled Mac OS (using net recovery, cmd+opt+R). I've also reset the SMC and PRAM.
Disconnecting Bluetooth and USB devices do not help.
The problem is uncorrelated with how warm the computer is (i.e., it's not an expanding battery problem).

Ive gotten my keyboard changed and also put in a new battery but its not helping. I can obviously use it with the external mouse&keyboard, but it takes away the magic from using a mac. Plus is not convenient as a I need to have these additional components connected to it.

Any help or guide would be appreciated.

Thanks

MacBook Air, OS X El Capitan (10.11.4)

Posted on May 15, 2016 8:27 AM

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Answer 1

appreciate

Level 4

1,278 points

May 28, 2016 4:57 PM in response to jsolorzano9

With wake on demand enabled the mac is in sleep mode & will wake occasionally for a short time , without lightning the screen .

In order to maintain active shared service registrations with bonjour sleep proxy . On some macs , sounds from optical drive , hard drive or fans may be heard during short time .

So to disable it please open system preferences > energy saver > power adapter > disable the box wake for network access .

Also removing a sleeping mac from the network will automatically remove its registered shared services from the bonjour sleep proxy.

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Answer 2

jsolorzano9 Author

Level 1

8 points

May 26, 2016 6:05 AM in response to appreciate

Sorry for not getting back earlier. This helped reduce the problem about 70%. However, even after installing the latest el capitan update, I find myself facing this same issue. However, now it happens when my mac is not connected to the charger. Before it would occur even while I was using it. It only occurs after it wakes while not being connected to a charger. Again, if I connect the usb keyboard and mouse, it works. Then, the only thing I am able to do is restart a few times, and then it starts working back up again.

Also, when it wakes and it stops working, a pop up window comes up stating that a bluetooth keyboard was not found.

Any thoughts?

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Answer 3

RJTUK

Level 3

654 points

May 26, 2016 6:08 AM in response to jsolorzano9

You might want to try an NVRAM reset to see if that helps clear the issues up.

https://support.apple.com/en-us/HT204063

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Answer 4

jsolorzano9 Author

Level 1

8 points

May 28, 2016 4:59 PM in response to RJTUK

Hey there, I tried the reset and it worked for just some time. It did again, but I noticed that it only does it when the computer is connected to the charger, after being used for 1 hour or so, i put it on sleep mode, and once it wakes, the keyboard and trackpad stopped working. Still, external mouse and keyboard work. I know it has to be something minor because after letting sleep again for a good 30 minutes, the trackpad and keyboard start working again. Any additional tips or steps are really appreciated.

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