(In reply to Andrew Osmond [:aosmond] from comment #22) > It is taking forever to get events back on xcb_wait_for_special_event on several Mesa calls. Quick look in the source code suggests it might be looping to get more events. We are blocking the main thread in the parent process -- I wonder if there could be some weird interaction where it expected us to handle some X events, but since we were blocked waiting for the WR layer manager to initialize we couldn't unblock ourselves.... bug 1635153 fixed such a bug.
Bug 1657597 Comment 27 Edit History
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bug 1635153 fixed such a bug.