Created attachment 8642400 [details] crash logs User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:39.0) Gecko/20100101 Firefox/39.0 Build ID: 20150630154324 Steps to reproduce: Two unexpected GPU crashes occurred during normal browsing; no specific site. First crash a few days ago caused permanent screen/OS hang, necessitating hard restart. Second crash caused screen to hang in semi-drawn state for several seconds until GPU auto-restart resumed normal behavior. Logs from second crash attached. MacBook Pro (Retina, 13-inch, Late 2012), OS X 10.10.4 Possibly related to 1176404?
Have you seen this recur more recently?
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