[Webkit-unassigned] [Bug 212022] Video and browser freeze when low-resolution and H.264 is used

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon May 18 07:38:00 PDT 2020


https://bugs.webkit.org/show_bug.cgi?id=212022

--- Comment #3 from milen <milen.yordanov at gmail.com> ---
I checked the machine log and there are lots of failures like these:

virtual IOReturn IOAccelEventMachine2::waitForStamp(int32_t, stamp_t, stamp_t *): initial wait for 1 second expired. Continue wait for 4 seconds. stamp 8305 (gpu_stamp=8304)

void IOAccelEventMachine2::signalHardwareError(eRestartRequest, int32_t): GPURestartSignaled stampIdx=30 type=3 prevType=0 numStamps=64

void IOAccelEventMachine2::hardwareErrorEvent(): GPURestartDequeued stampIdx=30 type=3

void IOAccelFenceMachine::fence_timeout(IOTimerEventSource *): IntelAccelerator prodding blockFenceInterrupt


It's hard to check any stats because the whole machine freezes for some time, even the mouse does not move.

The same scenario works fine on iOS 13 (iPhone 7).

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