MBA 2011 keyboard/trackpad freeze

Hi!

I have a MacBook Air 13", 2011, with Mavericks.

The problem in a nutshell: the keyboard and the trackpad freezes. Putting it to sleep sometimes helps.

The problem detailed:

• trackpad behaves erratically for a second, then dies. System Preferences reports no trackpad.
• the keyboard also dies (except the power button)
• bluetooth dies shortly after. Bluetooth icon crossed out.
• right side USB stops working

I can still use the left USB port to connect an Apple keyboard and a mouse.

I have tried:

• Clean install of Yosemite (this is of course more radical than kext cache cleaning, startup item cleaning and etc. on an existing install)
• SMC / PRAM reset
• Safe mode boot
• Disassembly to the point of removing the touchpad ribbon cable, bluetooth/wifi module and the battery
• Multiple power supplies / outlets / staying on battery power

It might be a hardware problem, but I need help to narrow it down.

Some common log entries related to this:

• SMC::smcReadKeyAction ERROR: smcReadData8 failed for key B0OS
• AppleUSBHubPort::FatalError - Port 1 of Hub at 0xfa100000 reported error 0xe00002c0 while doing setting port power
• SMC::smcInitHelper ERROR: MMIO regMap == NULL - fall back to old SMC mode
• AppleUSBMultitouchDriver::message - kIOUSBMessagePortHasBeenReset.
• AppleUSBMultitouchDriver::validateChecksum - 22-byte packet checksum is incorrect

A more detailed history, I couldn't find any help there.

I'm hoping to find someone who encountered a similar problem.

Thanks!

Welcome to the Mac-Forums.

That's quite a long thread you started over in Mac Rumors, thanks for posting the link. After looking at the errors and your attempts at repair, it appears you're fighting a losing war. I'm betting that you've got a defective (intermittent) logic board problem that likely is only going to get repaired by replacing it. Good luck with it.