MacBook Pro System Freezes Occurring with OS X 10.11.4 Update
The latest Mac OS X 10.11.4 update apparently contains a bug that freezes mostly 13-inch Retina MacBook Pros (Early 2015), reports MacRumors. Apple Support seems to be aware of the issue but hasn’t yet offered a solution. Affected users have found their own way to fix it: by downgrading to the previous version of OS X.
A dedicated thread discussing the system freeze shows that the problem affects a large number of MacBook Pro users, but the most affected laptops appear to be the aforementioned 13-inch models. Users say that after installing the latest OS X update, their system becomes totally unresponsive out of the blue, at random times, and that the only way to regain access to the computer is by performing a hard reboot.
The first report about the issue came in on March 25 from MacRumors forum member Antonn. That was four days after Apple pushed out the update, and it caused Antonn’s MacBook Pro to freeze about “once a week” without any characteristic signs. It happened while browsing with Safari, but also when using other apps.
Since his post went live, the thread has started growing and now extends to 21 pages (as of writing).
As noted by MacRumors, one potential cause has been identified from crash logs as a system framework or an Intel Graphics driver bug. While Apple Support is apparently aware of the issue, there is no solution yet from Apple. Users solved it by downgrading their software to OS X 10.11.3 and restoring from Time Machine. Others went with a clean install.
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