Apple has issued an update that addresses CPU-related power consumption issues with MacBook Air and MacBook Pro models released in June, including the 15-inch Retina display model. Details are slim on the 76.64MB update, but CNET reports that it contains new versions of the I/O kernel extensions and frameworks, the Dock application, and shared resources such as desktop pictures, user icons and system sounds. The patch also improves compatibility with certain USB devices interfering with Wi-Fi signals and causing other issues.
Unaddressed by today's update is an audio issue that arises when a 2012 MacBook is connected to an external display via Thunderbolt. A thread on Apple's support forum was created nearly a month ago and has accumulated over 100 replies with various related complaints. Users note that the MacBook's integrated speakers work fine, but they complain of intermittent static and crackling from the speakers in Apple's Thunderbolt Display.
Most of the complaints involve the 11 and 13-inch MacBook Air, though at least one person claims to have the issue with the Retina-equipped MacBook Pro. An exact cause remains unknown, but some folks believe that the adapter connecting Apple's new MagSafe 2 power connector to the Thunderbolt Display's power cord may be at fault. Others note that switching between audio outputs, reattaching all connections and/or restarting the offending program serves as a temporary workaround, but nobody has discovered a permanent solution.
The MacBook Air sports a 1.8GHz dual-core Intel Ivy Bridge Core i5 processor that Turbo Boosts up to 2.8GHz, 4GB of 1600MHz DDR3L SDRAM, 128GB of flash storage and integrated Intel graphics. It is still extremely thin and lightweight at only 0.68-inches at the thickest part and 2.96 pounds. The MacBook Air carries a 13.3-inch diagonal LED backlit display, operating at 1440 x 900 with a 16:10 aspect ratio.
The Apple MacBook Pro with Retina Display is equipped with a third generation Intel Core i7 processor clocked at 2.3GHz, 8GB of DDR3L 1600MHz RAM, 256GB of flash storage, Intel HD 4000 Graphics, a discrete Nvidia GeForce GT 650M GPU with 1GB of GDDR5 memory and a built-in FaceTime HD camera. It sports a SDXC card reader, HDMI port, two USB 3.0 ports, MagSafe 2 power connector and a dual Thunderbolt ports.
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