That said, I have some system logs that hint at the problem. An excerpt from my system.log follows at the end of this post.
This leads me to believe the behavior has something to do with Apple Screen Sharing. Unfortunately, this machine was specifically purchased for remote access, so not accessing it remotely is not an acceptable workaround.
I’ve also included output from EtreCheck, which doesn’t show anything helpful other than to indicate that this machine has very little software installed at which to point a finger.
Jan 26 10:53:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.Dock.agent[1304]): Service exited with abnormal code: 1
Jan 26 10:53:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.xpc.launchd.oneshot.0x10000006.prl_client_app[1297]): Service exited with abnormal code: 1
Jan 26 10:53:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.contacts.donation-agent[1267]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Jan 26 10:53:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.rapportd[1169]): Service did not exit 5 seconds after SIGTERM. Sending SIGKILL.
Jan 26 10:53:10 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:53:17 blackalchemy com.apple.AmbientDisplayAgent[1800]: BUG in libdispatch client: dispatch_mig_server: mach_msg() failed (ipc/send) msg too small - 0x10000008
Jan 26 10:53:20 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:53:50 --- last message repeated 2 times ---
Jan 26 10:53:50 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:54:20 --- last message repeated 2 times ---
Jan 26 10:54:20 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:54:50 --- last message repeated 2 times ---
Jan 26 10:54:50 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:55:20 --- last message repeated 2 times ---
Jan 26 10:55:20 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:55:40 --- last message repeated 2 times ---
Jan 26 10:55:40 blackalchemy syslogd[43]: ASL Sender Statistics
Jan 26 10:55:50 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:55:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.PubSub.Agent[1823]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.pubsub.ipc
Jan 26 10:55:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.PubSub.Agent[1823]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.pubsub.notification
Jan 26 10:56:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:56:30 --- last message repeated 2 times ---
Jan 26 10:56:30 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:57:00 --- last message repeated 2 times ---
Jan 26 10:57:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:57:30 --- last message repeated 2 times ---
Jan 26 10:57:30 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:58:00 --- last message repeated 2 times ---
Jan 26 10:58:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:58:31 --- last message repeated 2 times ---
Jan 26 10:58:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:59:01 --- last message repeated 2 times ---
Jan 26 10:59:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 10:59:31 --- last message repeated 2 times ---
Jan 26 10:59:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:00:01 --- last message repeated 2 times ---
Jan 26 11:00:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:00:31 --- last message repeated 2 times ---
Jan 26 11:00:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:01:01 --- last message repeated 2 times ---
Jan 26 11:01:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:01:31 --- last message repeated 2 times ---
Jan 26 11:01:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:02:01 --- last message repeated 2 times ---
Jan 26 11:02:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:02:31 --- last message repeated 2 times ---
Jan 26 11:02:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:03:01 --- last message repeated 2 times ---
Jan 26 11:03:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:03:31 --- last message repeated 2 times ---
Jan 26 11:03:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:04:01 --- last message repeated 2 times ---
Jan 26 11:04:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:04:31 --- last message repeated 2 times ---
Jan 26 11:04:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:05:01 --- last message repeated 2 times ---
Jan 26 11:05:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:05:31 --- last message repeated 2 times ---
Jan 26 11:05:31 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:05:41 --- last message repeated 1 time ---
Jan 26 11:05:41 blackalchemy syslogd[43]: ASL Sender Statistics
Jan 26 11:05:51 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:06:22 --- last message repeated 2 times ---
Jan 26 11:06:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:06:52 --- last message repeated 2 times ---
Jan 26 11:06:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:07:22 --- last message repeated 2 times ---
Jan 26 11:07:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:07:52 --- last message repeated 2 times ---
Jan 26 11:07:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:08:22 --- last message repeated 2 times ---
Jan 26 11:08:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:08:52 --- last message repeated 2 times ---
Jan 26 11:08:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:09:22 --- last message repeated 2 times ---
Jan 26 11:09:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:09:52 --- last message repeated 2 times ---
Jan 26 11:09:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:10:22 --- last message repeated 2 times ---
Jan 26 11:10:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:10:52 --- last message repeated 2 times ---
Jan 26 11:10:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:11:22 --- last message repeated 2 times ---
Jan 26 11:11:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:11:52 --- last message repeated 2 times ---
Jan 26 11:11:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:12:22 --- last message repeated 2 times ---
Jan 26 11:12:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:12:52 --- last message repeated 2 times ---
Jan 26 11:12:52 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:13:22 --- last message repeated 2 times ---
Jan 26 11:13:22 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:13:53 --- last message repeated 2 times ---
Jan 26 11:13:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:14:23 --- last message repeated 2 times ---
Jan 26 11:14:23 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:14:53 --- last message repeated 2 times ---
Jan 26 11:14:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:15:23 --- last message repeated 2 times ---
Jan 26 11:15:23 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:15:43 --- last message repeated 2 times ---
Jan 26 11:15:43 blackalchemy syslogd[43]: ASL Sender Statistics
Jan 26 11:15:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:16:23 --- last message repeated 2 times ---
Jan 26 11:16:23 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:16:53 --- last message repeated 2 times ---
Jan 26 11:16:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:17:23 --- last message repeated 2 times ---
Jan 26 11:17:23 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:17:53 --- last message repeated 2 times ---
Jan 26 11:17:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:17:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[1982]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:17:53 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:18:03 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:18:33 --- last message repeated 2 times ---
Jan 26 11:18:33 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:19:03 --- last message repeated 2 times ---
Jan 26 11:19:03 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:19:33 --- last message repeated 2 times ---
Jan 26 11:19:33 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:19:55 --- last message repeated 2 times ---
Jan 26 11:19:55 blackalchemy syncdefaultsd[1981]: BUG in libdispatch client: kevent[mach_recv] monitored resource vanished before the source cancel handler was invoked
Jan 26 11:20:03 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:20:33 --- last message repeated 2 times ---
Jan 26 11:20:33 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:20:57 --- last message repeated 2 times ---
Jan 26 11:20:57 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2007]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:20:57 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:21:03 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:21:33 --- last message repeated 2 times ---
Jan 26 11:21:33 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:22:04 --- last message repeated 2 times ---
Jan 26 11:22:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:22:34 --- last message repeated 2 times ---
Jan 26 11:22:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:22:57 --- last message repeated 2 times ---
Jan 26 11:22:57 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2026]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:22:57 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:23:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:23:34 --- last message repeated 2 times ---
Jan 26 11:23:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:24:04 --- last message repeated 2 times ---
Jan 26 11:24:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:24:34 --- last message repeated 2 times ---
Jan 26 11:24:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:24:58 --- last message repeated 2 times ---
Jan 26 11:24:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2043]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:24:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:25:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:25:34 --- last message repeated 2 times ---
Jan 26 11:25:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:25:44 blackalchemy syslogd[43]: ASL Sender Statistics
Jan 26 11:25:44 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:26:14 --- last message repeated 2 times ---
Jan 26 11:26:14 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:26:44 --- last message repeated 2 times ---
Jan 26 11:26:44 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:26:58 --- last message repeated 1 time ---
Jan 26 11:26:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2060]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:26:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:27:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:27:34 --- last message repeated 2 times ---
Jan 26 11:27:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:28:04 --- last message repeated 2 times ---
Jan 26 11:28:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:28:34 --- last message repeated 2 times ---
Jan 26 11:28:34 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:28:58 --- last message repeated 2 times ---
Jan 26 11:28:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2077]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:28:58 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:29:04 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:29:35 --- last message repeated 2 times ---
Jan 26 11:29:35 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:30:05 --- last message repeated 2 times ---
Jan 26 11:30:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:30:08 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:30:15 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:30:45 --- last message repeated 2 times ---
Jan 26 11:30:45 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:30:59 --- last message repeated 1 time ---
Jan 26 11:30:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2096]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:30:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:31:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:31:35 --- last message repeated 2 times ---
Jan 26 11:31:35 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:31:54 --- last message repeated 1 time ---
Jan 26 11:31:54 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing[2104]): Endpoint has been activated through legacy launch(3) APIs. Please switch to XPC or bootstrap_check_in(): com.apple.screensharing.server
Jan 26 11:31:55 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:31:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:05 --- last message repeated 5 times ---
Jan 26 11:32:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:06 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:15 --- last message repeated 8 times ---
Jan 26 11:32:15 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:15 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:25 --- last message repeated 9 times ---
Jan 26 11:32:25 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:25 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:35 --- last message repeated 9 times ---
Jan 26 11:32:35 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:36 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:45 --- last message repeated 8 times ---
Jan 26 11:32:45 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:45 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:55 --- last message repeated 9 times ---
Jan 26 11:32:55 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:32:56 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:32:59 --- last message repeated 3 times ---
Jan 26 11:32:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2174]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:32:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:33:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:33:05 --- last message repeated 4 times ---
Jan 26 11:33:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:33:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.screensharing.agent): Service only ran for 0 seconds. Pushing respawn out by 1 seconds.
Jan 26 11:33:15 --- last message repeated 3 times ---
Jan 26 11:33:15 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:33:45 --- last message repeated 2 times ---
Jan 26 11:33:45 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:34:15 --- last message repeated 2 times ---
Jan 26 11:34:15 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:34:45 --- last message repeated 2 times ---
Jan 26 11:34:45 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:34:59 --- last message repeated 1 time ---
Jan 26 11:34:59 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2202]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:35:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:35:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:35:35 --- last message repeated 2 times ---
Jan 26 11:35:35 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:35:45 --- last message repeated 1 time ---
Jan 26 11:35:45 blackalchemy syslogd[43]: ASL Sender Statistics
Jan 26 11:35:55 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:36:25 --- last message repeated 2 times ---
Jan 26 11:36:25 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:36:55 --- last message repeated 2 times ---
Jan 26 11:36:55 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:37:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2219]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:37:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:37:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:37:35 --- last message repeated 2 times ---
Jan 26 11:37:35 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:38:06 --- last message repeated 2 times ---
Jan 26 11:38:06 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:38:36 --- last message repeated 2 times ---
Jan 26 11:38:36 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:39:00 --- last message repeated 2 times ---
Jan 26 11:39:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2236]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:39:00 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:39:06 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:39:36 --- last message repeated 2 times ---
Jan 26 11:39:36 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:40:06 --- last message repeated 2 times ---
Jan 26 11:40:06 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:40:36 --- last message repeated 2 times ---
Jan 26 11:40:36 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:40:50 --- last message repeated 1 time ---
Jan 26 11:40:50 blackalchemy sshd: mtg [priv][2251]: USER_PROCESS: 2254 ttys000
Jan 26 11:40:56 blackalchemy com.apple.xpc.launchd[1] (com.apple.preference.displays.MirrorDisplays): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Jan 26 11:41:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.iCloudHelper[2261]): GUI session does not exist for service to join. It will be spawned without access to the GUI.
Jan 26 11:41:01 blackalchemy com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Jan 26 11:41:04 blackalchemy sudo[2259]: mtg : TTY=ttys000 ; PWD=/Users/mtg ; USER=root ; COMMAND=/sbin/shutdown -r now
Jan 26 11:41:05 blackalchemy shutdown[2263]: SHUTDOWN_TIME: 1516992065 2772
Jan 26 11:41:05 blackalchemy com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.system): System shutdown initiated by: shutdown.2263<-sudo.2259<-bash.2255<-sshd.2254<-sshd.2251<-launchd.1
Jan 26 11:41:34 localhost bootlog[0]: BOOT_TIME 1516992094 0
EtreCheck version: 3.4.6 (460)
Report generated 2018-01-26 12:03:01
Download EtreCheck from https://etrecheck.comRuntime: 2:12
Performance: Excellent
Click the [Lookup] links for more information from Apple Support Communities.
Click the [Details] links for more information about that line.
Click the [Remove/Report] links to remove adware or update the whitelist of legitimate software.
Problem: Other problem
Description:
The macOS GUI crashes and I’m left with a blank screen. This is a fresh install of macOS with only a applications installed, none of which are kernel extensions, and all of which were installed in the prev installed macOS version (10.11) without any problems.
Once the crash occurs, I can still access the Mac via SSH and there’s no indication of any problem, b unable to access via VNC (screen sharing) or by using the physical screen/mouse/keyboard. I’m forc restart from command line or by doing a hard boot.
Hardware Information: i Mac Pro (Late 2013)
[Technical Specifications] - [User Guide] - [Warranty & Service] Mac Pro - model: MacPro6,1
1 2.7 GHz 12-Core Intel Xeon E5 (Xeon(R)) CPU: 12-core
64 GB RAM Upgradeable - [Instructions]
DIMM1
16 GB DDR3 ECC 1866 MHz ok
DIMM2
16 GB DDR3 ECC 1866 MHz ok
DIMM3
16 GB DDR3 ECC 1866 MHz ok
DIMM4
16 GB DDR3 ECC 1866 MHz ok
Handoff/Airdrop2: supported Wireless: en2: Unknown
iCloud Quota: 9.79 GB available
Video Information: i AMD FirePro D500 - VRAM: 3 GB
Display 2560 x 1440 @ 60 Hz AMD FirePro D500 - VRAM: 3 GB
i
e
Display 2560 x 1440 @ 60 Hz
Disk Information: i APPLE SSD SM1024F disk0: (1 TB) (Solid State - TRIM: Yes) [Show SMART report]
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB (disk0s2) <not mounted> [APFS Container]: 1.00 TB
USB Information: i USB20Bus
hub_device
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller USB20Bus
hub_device
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Apple Inc. FaceTime HD Camera (Display) Apple Inc. Apple Thunderbolt Display Apple Inc. Display Audio
USB30Bus
Thunderbolt Information: i Apple Inc. thunderbolt_bus_2
Apple Inc. Thunderbolt Display Apple Inc. thunderbolt_bus_1 Apple Inc. thunderbolt_bus_0
Virtual disks: i Macintosh HD (disk1s1 - APFS) / [Startup]: 1.00 TB (788.62 GB free)
Physical disk: disk0s2 1.00 TB (788.62 GB free)
(disk1s2) <not mounted> [Preboot]: 1.00 TB
Physical disk: disk0s2 1.00 TB
(disk1s3) <not mounted> [Recovery]: 1.00 TB
Physical disk: disk0s2 1.00 TB (disk1s4) /private/var/vm [VM]: 1.00 TB
Physical disk: disk0s2 1.00 TB
System Software: i macOS High Sierra 10.13.3 (17D47) - Time since boot: less than an hour
Gatekeeper: i
Mac App Store and identified developers
Possible adware: i Unknown file: ~/Library/LaunchAgents/com.synology.SynologyDrive.plist
/usr/bin/open /Applications/Synology Drive.app One possible adware file found. [Remove/Report]
Kernel Extensions: i /Applications/Parallels Desktop.app
[loaded] com.parallels.kext.hypervisor (13.2.0 43213 - SDK 10.9) [Lookup] [loaded] com.parallels.kext.netbridge (13.2.0 43213 - SDK 10.9) [Lookup]
[not loaded] com.parallels.kext.usbconnect (13.2.0 43213 - SDK 10.9) [Lookup] [loaded] com.parallels.kext.vnic (13.2.0 43213 - SDK 10.9) [Lookup]
/System/Library/Extensions
[not loaded] com.TrustedData.driver.VendorSpecificType00 (1.7.0 - SDK 10.7) [Lookup] [not loaded] com.drobo.SCSI.ThunderBolt (1.1 - SDK 10.8) [Lookup]
System Launch Agents: i [not loaded] 9 Apple tasks [loaded] 171 Apple tasks [running] 110 Apple tasks
System Launch Daemons: i [not loaded] 35 Apple tasks [loaded] 190 Apple tasks [running] 105 Apple tasks
Launch Agents: i
[loaded] [loaded] [loaded]
com.microsoft.update.agent.plist (Microsoft Corporation - installed 2018-01-23) [Looku com.nulana.rxagentmac.user.plist (Nulana LTD - installed 2018-01-07) [Lookup] org.macosforge.xquartz.startx.plist (Apple Inc. - XQuartz - installed 2016-10-26) [Look
Launch Daemons: i
[running] [running] [loaded] [loaded]
[Lookup]
com.datarobotics.ddservice64d.plist (Drobo, Inc. - installed 2017-12-15) [Lookup]
com.datarobotics.ddserviced.plist (? 5ae83f29 8ff56e9d - installed 2015-01-12) [Look com.microsoft.autoupdate.helper.plist (Microsoft Corporation - installed 2018-01-23) [L com.microsoft.office.licensingV2.helper.plist (Microsoft Corporation - installed 2016-12-
p u
u o 0
[running] com.nulana.rxagentmac.daemon.plist (Nulana LTD - installed 2018-01-07) [Lookup]
[loaded] org.macosforge.xquartz.privileged_startx.plist (Apple Inc. - XQuartz - installed 2016-10 [Lookup]
User Launch Agents: i [loaded] com.synology.SynologyDrive.plist (? 96f4a938 0 - installed 2018-01-26) [Lookup]
User Login Items: i DDAssist Application
(/Applications/Drobo Dashboard.app/Contents/Resources/DDAssist.app) Update Mail filters periodically Application
(~/Library/Scripts/Applications/Mail/Update Mail filters periodically.app) twilson Volume - Hidden
(/Volumes/twilson)
Internet Plug-ins: i QuickTime Plugin: 7.7.3 (installed 2018-01-26)
Safari Extensions: i [not loaded] Open in Internet Explorer - Parallels - http://www.parallels.com(installed 2018-0
3rd Party Preference Panes: i None
Time Machine: i Auto backup: YES Volumes being backed up:
Macintosh HD: Disk size: 1.00 TB Disk used: 211.73 GB Destinations:
TM_BlackAlchemy [Network] Total size: 1.93 TB
Total number of backups: 30 Oldest backup: 1/12/18, 1:34 PM Last backup: 1/26/18, 11:50 AM Size of backup disk: Adequate
Backup size 1.93 TB > (Disk used 211.73 GB X 3)
Top Processes by CPU: i 3% kernel_task
1% sysmond
1% mDNSResponder
-
1
1% launchd 1% Safari
Top Processes by Memory: i
3.21 GB 337 MB 212 MB 210 MB 96 MB
kernel_task mds_stores Mail prl_client_app Safari
Top Processes by Network Use: i
Input
133 MB 97 KB 4 MB
1 MB
1 MB
Output
672 KB 38 MB 113 KB 50 KB 27 KB
Process name
mDNSResponder screensharingd netbiosd kernel_task
Mail
Top Processes by Energy Use: i 3.86 screensharingd
3.72 WindowServer
3.02 DDService64d
2.76 ScreensharingAgent 1.34 Activity Monitor
Virtual Memory Information: i
56.22 GB
45.95 GB
7.78 GB
10.27 GB
0 B Swap Used
Available RAM Free RAM Used RAM Cached files
Software installs (last 30 days): i Remotix Agent: (installed 2018-01-07)
XQuartz 2.7.11: (installed 2018-01-07)
Microsoft Office 2016 for Mac: (installed 2018-01-12) Microsoft AutoUpdate: (installed 2018-01-12) Microsoft Excel for Mac: (installed 2018-01-12) Microsoft Word for Mac: (installed 2018-01-12) Microsoft OneNote for Mac: (installed 2018-01-12) Microsoft PowerPoint for Mac: (installed 2018-01-12) Microsoft Outlook for Mac: (installed 2018-01-12)
Drobo Dashboard: (installed 2018-01-12)
Drobo Dashboard: (installed 2018-01-12)
Microsoft Excel for Mac: (installed 2018-01-18) Microsoft Word for Mac: (installed 2018-01-18) Microsoft OneNote for Mac: (installed 2018-01-18) Microsoft PowerPoint for Mac: (installed 2018-01-18) Microsoft Outlook for Mac: (installed 2018-01-18) Microsoft AutoUpdate: (installed 2018-01-23) Synology Drive: (installed 2018-01-25)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events): i 2018-01-26 11:41:33 Last shutdown cause: 3 - Hard shutdown