Supplemental Update for OS X 10.10.3 Yosemite Released to Fix Video Driver Bug
Apple has released a supplemental update to OS X 10.10.3, aimed at resolving startup problems encountered by users who happen to be running some apps that capture video.
The update is available for all OS X Yosemite users who have installed OS X 10.10.3, and it’s recommended even if you do not use video capture software on the Mac.
Users can find the package available on the Mac App Store, accessible from the Apple menu > App Store > Updates tab, the update is labeled as “OS X Yosemite 10.10.3 Supplemental Update 10.10.3”. Users can also choose to download the standalone installer from Apple here.
Release notes accompanying the Supplemental Update are brief:
“The OS X Yosemite 10.10.3 Supplemental Update fixes a video driver issue that may prevent your Mac from starting up when running certain apps that capture video.”
The update download is very small, weighing in around 1.2MB, and requires a restart to complete installation. It is recommended to back up a Mac before installing any system software updates, even if it’s a small one like this.
Mac users who have experienced the issue this update addresses could typically only boot OS X by using Safe Mode, as a regular boot would cause the system to hang on startup. Accordingly, if your Mac is impacted by this particular bug, perform a Safe Boot by holding down the Shift key during startup, then install the update. The Mac should then boot as normal after the update has been applied to the machine.
Despite OS X 10.10.3 being the most stable version of OS X Yosemite available thus far, some Mac users continue to experience a variety of issues with the system software, ranging from random kernel panics, excessive WindowServer CPU usage, quirky Finder behavior, and other mixed peculiarities.