![]() Replace IntelAccelerator with the name of your graphics card if not Intel.Īnd the system recovered! The UserEventAgent restarts immediately but the resources are freed. I observed that a huge amount of IOAccelMemoryInfoUserClient resources is allocated by a process called UserEventAgent. Sorry chrde-san, I didn't recognize your post was in reply to aprilten-san. ![]() Unless the problem is previous requests not being freed? It does look like an arbitration issue because of too many requests for accelerators, so presumably any case of lots of accelerator requests may trigger this. *10 IOGraphicsAccelerator2::newUserClient(task*, void*, unsigned int, IOUserClient**) + 461 (IOAcceleratorFamily2 + 146995) *10 IOService::newUserClient(task*, void*, unsigned int, OSDictionary*, IOUserClient**) + 49 (kernel + 6889537) In my case, lots of Safari windows seemed to be the problem because killing Safari made things Ok, but re-starting Safari made the hangs start again,įWIW I have spin dump files from some of the hangs, and the bottom of the WindowServer stack in each case says:
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