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A video driver glitch that caused some Mac users to experience startup trouble under OS X 10.10.3 was addressed by Apple on Wednesday with a supplemental update to the company's venerable desktop operating system.
Appearing in the updates tab of the Mac App Store under the slightly redundant heading "OS X Yosemite 10.10.3 Supplemental Update 10.10.3," the latest revision "fixes a video driver issue that may prevent your Mac from starting up when running certain apps that capture video."
Word of the bug first surfaced last week, as users reported significantly lengthened startup times compared to their systems' behavior under OS X 10.10.2. Some found that clearing their Mac's PRAM solved the problem, others found salvation in resetting their startup disk selection in System Preferences, while many were unable to come to a resolution.
Another issue, in which opening large JPEG files using QuickLook or Preview can cause a Mac running 10.10.3 to crash, appears yet to be addressed.
The supplemental update, a rarity for Apple, comes just over one week after the release of OS X 10.10.3.