from Apple: Problem Description/Diagnosis macbook pro 15" mid 2014 Issue: 1) Computer is restarting unexpectedly and showing kernel panic report when it boots back up. Running Yosemite. No usage cases that make it more likely to happen; most typical case is just surfing Safari when it happens. Has Time Machine backup from earlier today. Issues started on Friday. Can work for a couple of hours but had instance of it failing in 30min. Steps to Reproduce: 1) Observe multiple kernel panics logged recently. All backtraces the same: points to graphic system. The graphics backtraces calls out Intel Graphics, not Nvidia. Seems more likely to replicate if we keep machine on Intel graphics chip. Luckily it was still under warranty but can you explain how it will affect my macbook if they switch the graphics? thank you!