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SOLUTION - USB keyboard will not connect to MacBookPro after wakeup from sleep
I purchased a USB keyboard with a numeric keypad to avoid the frequent battery replacements required by my Bluetooth keyboard. However, after upgrading to the latest version of macOS El Capitan, the keyboard stopped waking from sleep mode and became completely unresponsive. None of the solutions suggested on Apple Support forums resolved the issue, including: – Connecting the keyboard to different USB ports and removing other USB devices – Disconnecting and reconnecting the keyboard after sever...
SOLUTION - kernel_task process generates high cpu load
After upgrading my MacBook Pro to macOS 10.9, I began experiencing issues with consistently high CPU usage. A detailed examination revealed that the process kernel_task was responsible for generating the excessive load. After reviewing several discussion forums and Apple Support resources, I discovered that elevated kernel_task activity can sometimes be related to Bluetooth functionality. Since I use a wireless keyboard and Magic Mouse connected via Bluetooth, disabling Bluetooth permanently ...