Mac locking up for no reason

First, before anyone weighs in: yes, I've already reset SMC & NVRAM.


My Mac mini running Mojave (10.14.3). I just had my first lockup on this machine, though the same exact thing was happening on another Mac mini running Mojave, so I'm convinced it's the OS.


The symptom: the mouse starts beachballing, and everything locks up (clock stops, too), and nothing works except the mouse which I can still move around. I have no other option than to hard power down the machine.


Thankfully I took note of the exact second this happened (01:01:05), and when I booted back up, I looked at the system.log file in Console:


Feb  3 01:01:04 Spacebox xpcproxy[16340]: libcoreservices: _dirhelper_userdir: 529: bootstrap_look_up returned (ipc/send) invalid destination port
Feb  3 01:01:04 Spacebox iTunesCacheExtension[16343]: objc[16343]: Class ITNSImage is implemented in both /System/Library/Frameworks/iTunesLibrary.framework/Versions/A/iTunesLibrary (0x7fffa235b628) and /Applications/iTunes.app/Contents/PlugIns/iTunesCacheExtension.appex/Contents/MacOS/iTunesCacheExtension (0x1086f34b0). One of the two will be used. Which one is undefined.
Feb  3 01:01:04 Spacebox com.apple.xpc.launchd[1] (com.apple.imfoundation.IMRemoteURLConnectionAgent): Unknown key for integer: _DirtyJetsamMemoryLimit
Feb  3 01:01:04 --- last message repeated 1 time ---
Feb  3 01:01:04 Spacebox com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.IDECacheDeleteAppExtension.16341): Path not allowed in target domain: type = pid, path = /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/Versions/A/XPCServices/IDETouchBarSimulatorService.xpc error = 147: The specified service did not ship in the requestor's bundle, origin = /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex
Feb  3 01:01:04 Spacebox com.apple.xpc.launchd[1] (com.apple.xpc.launchd.domain.pid.IDECacheDeleteAppExtension.16341): Path not allowed in target domain: type = pid, path = /Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Versions/A/XPCServices/RootDebuggingXPCService.xpc error = 147: The specified service did not ship in the requestor's bundle, origin = /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex
Feb  3 01:01:13 Spacebox com.apple.xpc.launchd[1] (com.apple.DumpGPURestart): Service only ran for 1 seconds. Pushing respawn out by 9 seconds.
Feb  3 01:01:27 Spacebox com.apple.xpc.launchd[1] (com.apple.DumpGPURestart): Service only ran for 5 seconds. Pushing respawn out by 5 seconds.


I don't know if there's anything useful there. Anyone know how else I can troubleshoot this?

Mac mini, 10.14

Posted on Feb 2, 2019 11:54 PM

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39 replies

Feb 6, 2019 2:45 PM in response to Kurt Lang

"MalwareBytes for Mac being the exception as its main function is to try and help clean up after the fact."


Clean up, meaning what? Bitdefender also quarantines files. MalwareBytes actually missed email files that contained malware, whereas Bitdefender caught them. Given, those attachments probably targeted Windows, but still, you don't want to accidentally forward something to someone else who might be running Windows.


"After over 40 years of computer usage, DOS/Windows/Mac, and never using any type of AV software, or ever having even one type of malware on any computer I've owned, I'd have to say I'm already more clever than they are."


Same here. I might've gotten hit with something once. The only reason I bought Bitdefender was because I run a small business now, and wanted an extra layer of protection. But you're probably right, it may be unnecessary.


Feb 7, 2019 7:53 AM in response to Kurt Lang

CleanMyMac isn't even doing anything when the lockups occur. It's really more likely that it's Spotlight, but I'll keep an open mind and see what happens now that Spotlight is disabled. If I get another lockup, I'll uninstall CMM.


"It's almost a given that if the user has run a cleaning app, you must both remove that app, followed by a reinstall of the OS to undo the damage. And that's only the OS. It's still a game to figure out what third party apps it damaged. You basically end up reinstalling everything."


This seems like conjecture. Again, I hear a lot of talk about CMM damaging system files or whatever, but no one has any solid evidence, like "CMM removed /var/lib/blahblah.so when it wasn't supposed to." The claim is being made that CMM's devs don't know what they're doing, and as a software engineer myself, I'm pretty sure they've done their research and made sure it's safe to remove the files that are being removed when you run a cleanup. I mean, it's no secret what it'll remove, it literally shows you a list.


I also don't get when people say CMM is completely unnecessary. One time, I hadn't run it in quite awhile, and had about 10GB of junk wasting space (caches, old logs, etc). Evidently MacOS wasn't doing a great job at keeping that cleaned up. I also find CMM's old file cleanup tool really useful. Everything in the app allows opting out of cleaning up certain files or folders, so if you're careful and responsible about that, it shouldn't be an issue.


I'll give it a week or so and see if any more lockups occur.

Feb 7, 2019 11:01 AM in response to kkbedard

The majority (if not all) of the long-time members here will tell you to steer clear of any such app.


I still use the free utility OnyX. But you have to know what it does in order to use it safely. Even then, I can't remember the last time I used it to even just to clear cache files. My main use of OnyX is to enable or disable hidden settings in macOS. Mainly, I turn off all of the time wasting eye candy.

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Mac locking up for no reason

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