Q: Any other MBP users experiencing keyboard & trackpad pauses/stalls with El Capitan?
Are other MBP users experiencing pauses & lost input with the built-in keyboard & trackpad since upgrading to El Capitan? At least once every 90 seconds the pointer freezes and the keyboard stops accepting input. Activity Log reports errors that the device is not ready (see below) . This is happening on a virgin installation onto a reformatted hard drive with no third party software installed. I restored the system to Yosemite and the problem went away. Then performed a second, fresh install and the problem returns. It occurs even during the OS installer itself indicating this is a kernel extension or Apple driver bug. When booting Yosemite from and external drive their is no problem so I'm confident it's not defective hardware
This issue is specific to all version of El Capitan.
1/19/16 6:32:04.000 PM kernel[0]: USBF: 1409.535 IOUSBHIDDriver(AppleUSBMultitouchDriverNoShim)::RearmInterruptRead returning error 0xe00002d8 (device is not ready), not issuing any reads to device
1/19/16 6:34:46.000 PM kernel[0]: USBF: 1571.674 IOUSBHIDDriver(AppleUSBTCKeyboard)::RearmInterruptRead returning error 0xe00002d8 (device is not ready), not issuing any reads to device
Workaround is to use a Magic Trackpad and USB Keyboard.
MacBook Pro, OS X El Capitan (10.11.2)
Posted on Jan 19, 2016 6:37 PM
Try a restart.
Do a backup, using either Time Machine or a cloning program, to ensure files/data can be recovered. Two backups are better than one.
Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.
Isolating an issue by using another user account
If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don't do them all at once.
Posted on Feb 14, 2016 5:24 PM