键盘停止随机工作

我有一个MBA 2009，它有一个不常见的问题：

键盘和触控板随机停止工作，有时只是在开机后，有时几分钟后。起初我认为这是操作系统的一个问题，所以我做了一个干净的安装 10.8，它解决了一个小时的问题然后又回来了。

我可以肯定这是来自设备的问题，因为计算机在控制它时可以正确回答 ssh。

此外，当我尝试使用和usb控制器时，它根本不起作用......

我不能跑 AHT 因为SSD已被完全擦除（ 之前 我拿到了MBA）

我已经隔离了相应的日志：

26/09/13 19:57:37,641 NotificationCenter[150]: Unable to simultaneously satisfy constraints:
(
    "<NSAutoresizingMaskLayoutConstraint:0x7ffdf985d420 h=--& v=-&- H:[widgetView(385)]   (Names: widgetView:0x7ffdf8cafa30 )>",
    "<NSLayoutConstraint:0x7ffdf8c76330 H:|-(100)-[NSView:0x7ffdf8cb5c10](LTR)   (Names: widgetView:0x7ffdf8cafa30, '|':widgetView:0x7ffdf8cafa30 )>",
    "<NSLayoutConstraint:0x7ffdf8c7a110 H:[NSView:0x7ffdf8cb5c10]-(0)-|(LTR)   (Names: widgetView:0x7ffdf8cafa30, '|':widgetView:0x7ffdf8cafa30 )>",
    "<NSLayoutConstraint:0x7ffdf8c743d0 H:|-(0)-[NSView:0x7ffdf8cb5a40]   (Names: '|':NSView:0x7ffdf8cb5c10 )>",
    "<NSLayoutConstraint:0x7ffdf8c6e560 H:[NSView:0x7ffdf8cb5a40]-(0)-|   (Names: '|':NSView:0x7ffdf8cb5c10 )>",
    "<NSLayoutConstraint:0x7ffdf8cb5b40 H:[NCSwitchButton:0x7ffdf8caf5f0]-(>=9)-|   (Names: '|':NSView:0x7ffdf8cb5a40 )>",
    "<NSLayoutConstraint:0x7ffdf8cb6470 H:|-(35)-[NSTextField:0x7ffdf8cb1fa0]   (Names: '|':NSView:0x7ffdf8cb5a40 )>",
    "<NSLayoutConstraint:0x7ffdf8cb1af0 H:[NCSwitchButton:0x7ffdf8caf5f0(64)]>",
    "<NSLayoutConstraint:0x7ffdf8cb2820 H:[NSTextField:0x7ffdf8cb1fa0]-(NSSpace(8))-[NCSwitchButton:0x7ffdf8caf5f0]>",
    "<NSLayoutConstraint:0x7ffdf8cb22e0 H:[NSTextField:0x7ffdf8cb1fa0(184)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7ffdf8cb22e0 H:[NSTextField:0x7ffdf8cb1fa0(184)]>

Set the NSUserDefault NSConstraintBasedLayoutVisualizeMutuallyExclusiveConstraints to YES to have -[NSWindow visualizeConstraints:] automatically called when this happens.  And/or, break on objc_exception_throw to catch this in the debugger.
26/09/13 19:57:52,000 kernel[0]: Apple Internal Keyboard / Trackpad::terminate(kIOServiceSynchronous) timeout
26/09/13 19:57:52,000 kernel[0]: USBF:  1515.994    [0xffffff8026509000] The IOUSBFamily is having trouble enumerating a USB device that has been plugged in.  It will keep retrying.  (Port 6 of Hub at 0x4000000)
26/09/13 19:57:56,000 kernel[0]: USBF:  1519.  3    [0xffffff8026509000] The IOUSBFamily was not able to enumerate a device.

日志的第二部分：

24/09/13 16:16:40,000 kernel[0]: AppleUSBMultitouchDriver::_deviceGetReport - DeviceRequest for reportID 0x0 returned with result 0xe0004006 - retrying
24/09/13 16:16:40,000 kernel[0]: AppleUSBMultitouchDriver::_deviceGetReport - DeviceRequest for reportID 0x0 returned with result 0xe0004006 - retrying
24/09/13 16:16:40,000 kernel[0]: AppleUSBMultitouchDriver::_deviceGetReport - DeviceRequest for reportID 0x0 returned with result 0xe0004006 - retrying
24/09/13 16:16:40,000 kernel[0]: AppleUSBMultitouchDriver::_deviceGetReport - DeviceRequest returned error 0xe0004006 (interface 0, reportID 0x0)
24/09/13 16:16:40,000 kernel[0]: AppleUSBMultitouchDebug: _deviceGetReport returned an error in configurePower

和

24/09/13 16:29:31,000 kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 54-byte packet checksum is incorrect (expected 0x98b, checksum bytes were 0x9cd)
24/09/13 16:29:31,000 kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 54-byte packet checksum is incorrect (expected 0x973, checksum bytes were 0x926)
24/09/13 16:29:31,000 kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 54-byte packet checksum is incorrect (expected 0x736, checksum bytes were 0x778)
24/09/13 16:29:32,000 kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 54-byte packet checksum is incorrect (expected 0x81d, checksum bytes were 0x85f)
24/09/13 16:29:32,000 kernel[0]: AppleUSBMultitouchDriver::validateChecksum - 54-byte packet checksum is incorrect (expected 0xac1, checksum bytes were 0xa74)

最后一个重复了很多，禁用通知中心不起作用。我会试试EFI。

这也发生在我身上！同样是Mt Lion的2009 MBP

我在2013年12月/ 1月的论坛上发现了其他同样问题的人。通过来自所述论坛的一些命令行魔术词修复了这个问题。

问题又回来了，我对山狮感到厌倦，我只是用键盘查看器输入不起作用的键的文字。

信不信由你，退出＆amp;然后重新启动使问题远远好于简单地重新启动。

您是否尝试重置NVRAM或SMC？首先，我会重置PRAM，看看是否能解决您的问题。如果没有，继续重置SMC。

重置NVRAM / PRAM 关闭你的Mac。

1. 在键盘上找到以下键：Command（⌘），Option，P， 和R.
2. 您需要在步骤中同时按住这些键 4。
3. 打开电脑。
4. 在出现灰色屏幕之前按住Command-Option-P-R键。
5. 按住键直到 计算机重新启动，你会听到第二个启动声 时间。
6. 释放钥匙。

NVRAM重置后，您可能需要再次设置音量，屏幕亮度和其他一些设置。

如果这不能解决您的问题，我会看一下 http://support.apple.com/kb/HT3964 重置SMC。

如果其中任何一个无法解决您的情况，请回发。