new Macbook pro 2018 random restarts

Thanks!

It looks like I still need to do more with homebrew.

But your shutdown code is interesting. Unfortunately, Apple has never published its internal lists of shutdown codes and meanings. There are some leaked documents online, but generally it is a mystery.

When I do a search for "Last Shutdown Cause: -20 - Unknown" the only hits are from EtreCheck reports run on an iMac Pro. This is the only other Mac that has a Secure Enclave with embedded iOS and ARM chip. It seems reasonable to assume that -20 is a panic or crash related to that embedded system and that is what triggers the restart.

Do you have any other cryptic diagnostic files on or around 2018-07-18 07:28:02? That might help shed some light on the problem.

However, I don't think this is anything you are going to be able to fix yourself. I would appreciate any additional information you could post that might help EtreCheck identify and report this problem. But ultimately, you are going to have to take that machine back to Apple. They might also be interested in those diagnostic files.

If you make a Time Machine backup, it should be easy to restore.

Note to self: this file uses a UTC timestamp both in the file name and internally, unlike other diagnostic files

I guess we can go ahead and assume that the part about "Recoverable Panic" is false. 🙂

Code for MacOS and all Applications (including third party Applications DOES NOT modify itself. Every setting is stored separate from the code, in a file, typically a .plist file. There are very few of these that are system-wide. Almost everything goes in a User Directory, often in

~/Library...

,,, where the tilde is an active shortcut for "current user" that is honored throughout the File system.

David,

You are correct about the behaviour of homebrew and the software it installs. It isn't in your home directory.

However, that won't be a problem for Time Machine. It can restore all those files and make your new machine a clone of the old one.

The only time you have to be careful with this is when you try to use Time Machine to make a clone of an existing machine and then use both. There are some subtle problems with doing that. But if the new machine replaces the old one, Time Machine will restore it just fine.

First of all, I found this random restart issue is getting popular.

https://www.digitaltrends.com/computing/apple-t2-chip-may-be-causing-imac-pro-ma cbook-problems/

And here is from my MBP 2018.

{"caused_by":"macos","macos_system_state":"running","bug_type":"210","os_version ":"Bridge OS 2.4.1 (15P6613)","timestamp":"2018-07-25 03:54:35.87 +0000","incident_id":"2B7FD5FA-F3C3-4263-9CD1-9BBD6CBD53C4"}

"product" : "iBridge2,3",

"kernel" : "Darwin Kernel Version 17.7.0: Fri Jun 15 18:33:47 PDT 2018; root:xnu-4570.71.1~1\/RELEASE_ARM64_T8010",

"panicString" : "panic(cpu 0 caller 0xfffffff01ad73984): x86 global reset detected\nDebugger message: panic\nMemory ID: 0x6\nOS version: 15P6613\nKernel version: Darwin Kernel Version 17.7.0: Fri Jun 15 18:33:47 PDT 2018; root:xnu-4570.71.1~1\/RELEASE_ARM64_T8010\nKernelCache UUID: 4BD537B3EB4924661E7DD2268EBDBDEF\niBoot version: iBoot-4076.75.2\nsecure boot?: YES\nx86 EFI Boot State: 0xe\nx86 System State: 0x0\nx86 Power State: 0x0\nPaniclog version: 9\nKernel slide: 0x0000000014600000\nKernel text base: 0xfffffff01b604000\nEpoch Time: sec usec\n Boot : 0x5b575de2 0x000e65ab\n Sleep : 0x5b57f46e 0x00016b6b\n Wake : 0x5b57f46e 0x000a99b5\n Calendar: 0x5b57f46e 0x000beef4\n\nPanicked task 0xffffffe0001fa2b0: 3253 pages, 207 threads: pid 0: kernel_task\nPanicked thread: 0xffffffe0004caf60, backtrace: 0xffffffe016f2b530, tid: 392\n\t\t ...

"panicFlags" : "0x102",

"otherString" : "\n** Stackshot Succeeded ** Bytes Traced 97920 **\n",

"macOSPanicFlags" : "0x0",

"macOSPanicString" : "Global Reset\nGRC0 = 0x00010000\r\nGRC1 = 0x00000000\r\n",

I also bought mine 2 days ago. It hangs for a while, and then crashes.

It has happened twice in the last 2 days, here is the panic file from the latest.

I have the panic file from the latest. How can I send this to you because I can't open it?

I have exactly the same problem, bought the new MBP 2018 core i7 15 inch, CPU 2.6, 512GB SSD several days ago, and almost anytime the MPB sleeps for a long time, it reboots after waking up.

I see many "panic" file logs in /Library/Logs/DiagnosticReports/ProxiedDevice-Bridge/ (one per day)

```

{"caused_by":"macos","macos_system_state":"running","bug_type":"210","os_version ":"Bridge OS 2.4.1 (15P6703)","timestamp":"2018-08-13 23:19:41.03 +0000","incident_id":"C8E0D6AE-8811-41EB-96A6-61A259C24FC2"}

```

```

"build" : "Bridge OS 2.4.1 (15P6703)",

"crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001",

"date" : "2018-08-13 23:19:40.90 +0000",

"incident" : "C8E0D6AE-8811-41EB-96A6-61A259C24FC2",

"kernel" : "Darwin Kernel Version 17.7.0: Fri Jul 6 19:25:51 PDT 2018; root:xnu-4570.71.3~1\/RELEASE_ARM64_T8010",

"macOSOtherString" : "\n** In Memory Panic Stackshot Succeeded ** Bytes Traced 199488 **\n",

"macOSPanicFlags" : "0x404",

"macOSPanicString" : "panic(cpu 0 caller 0xffffff80040fab10): \"Sleep\/Wake hang

```

Is this because of the new T2 chip?

Same problem here. Macbook will randomly restart. It's happened about once every 3 days or so for me. Here are my EtreCheck results: (this report was run about 10 minutes after last restart)

EtreCheck version: 4.3.6 (4D041)

Report generated: 2018-08-17 11:15:58

Download EtreCheck from https://etrecheck.com

Runtime: 2:11

Performance: Excellent

Problem: Computer is restarting

Major Issues:

Anything that appears on this list needs immediate attention.

Unsigned files - There are unsigned software installed that could be adware and should be reviewed.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Apps crashing - There have been numerous app crashes.

32-bit Apps - This machine has 32-bits apps that may have problems in the future.

Abnormal shutdown - Your machine shut down abnormally.

Hardware Information:

15" MacBook Pro with Thunderbolt 3 and Touch ID (Mid 2018)

MacBook Pro Model: MacBookPro15,1

1 2.9 GHz Intel Core i9 (i9-8950HK) CPU: 6-core

32 GB RAM - Not upgradeable

BANK 0/ChannelA-DIMM0 - 16 GB DDR4 2400 ok

BANK 2/ChannelB-DIMM0 - 16 GB DDR4 2400 ok

Battery: Health = Normal - Cycle count = 18

Video Information:

Intel UHD Graphics 630 - VRAM: 1536 MB

Radeon Pro 560X - VRAM: 4096 MB

Color LCD

Drives:

disk0 - APPLE SSD AP1024M 1.00 TB (Solid State - TRIM: Yes)

Internal PCI-Express 8.0 GT/s x4 NVM Express

disk0s1 - EFI [EFI] 315 MB

disk0s2 1.00 TB

disk1s1 - Macintosh HD (APFS) 1.00 TB (356.47 GB used)

disk1s2 - Preboot (APFS) [APFS Preboot] 1.00 TB (41 MB used)

disk1s3 - Recovery (APFS) [Recovery] 1.00 TB (1.03 GB used)

disk1s4 - VM (APFS) [APFS VM] 1.00 TB (1.07 GB used)

Mounted Volumes:

disk1s1 - Macintosh HD 1.00 TB (641.42 GB free)

APFS

Mount point: /

Encrypted

disk1s4 - VM [APFS VM] 1.00 TB (641.42 GB free)

APFS

Mount point: /private/var/vm

Encrypted

Network:

Interface en8: USB 10/100/1000 LAN

Interface en9: iPad

Interface en7: iPhone

Interface en0: Wi-Fi

802.11 a/b/g/n/ac

One IPv4 address

Interface en6: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

iCloud Quota: 4.70 GB available

System Software:

macOS High Sierra 10.13.6 (17G2208)

Time since boot: Less than an hour

System Load: 2.01 (1 min ago) 2.28 (5 min ago) 2.36 (15 min ago)

Security:

Unsigned Files:

Launchd: /Library/LaunchDaemons/com.rogueamoeba.aceagent.plist

Executable: aceagent

32-bit Applications:

10 32-bit apps

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

Dropbox Application (Dropbox, Inc. - installed 2018-08-16)

(/Applications/Dropbox.app)

proXPN Application (proXPN Direct, LLC - installed 2017-09-08)

(/Applications/proXPN.app)

iTunesHelper Application (Apple - installed 2018-08-03)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

Magnet Application (Mac App Store - installed 2018-08-03)

(/Applications/Magnet.app)

Internet Plug-ins:

AdobeAAMDetect: (installed 2018-08-03)

QuickTime Plugin: (installed 2018-07-04)

Time Machine:

Skip System Files:

Mobile backups:

Auto backup: Yes

Volumes being backed up:

Macintosh HD: Disk size: 1.00 TB - Disk used: 358.82 GB

Destinations:

T**********E [Local] (Last used)

Total size: 4.00 TB

Total number of backups: 42

Oldest backup: 2017-02-07 16:27:41

Last backup: 2018-08-14 15:09:36

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Top Processes by Energy Use:

Virtual Memory Information:

Software Installs (past 30 days):

Diagnostics Information (past 7 days):

2018-08-17 10:59:47 Last Shutdown Cause: -20 - Unknown

2018-08-16 09:35:42 Adobe Premiere Pro CC 2018.app Hang

/Applications/Adobe Premiere Pro CC 2018/Adobe Premiere Pro CC 2018.app

2018-08-15 15:09:44 Google Chrome.app Hang (2 times)

/Applications/Google Chrome.app

2018-08-15 14:12:52 CEPHtmlEngine.app Crash (7 times)

/Applications/Adobe After Effects CC 2018/Adobe After Effects CC 2018.app/Contents/MacOS/CEPHtmlEngine.app

End of report

For what its worth, I took my 13" Quadcore 500gig 16 gig RAM back to Apple store and after they asked a few questions about what I have done to attempt to resolve they offered to replace the device with what they had in the store.

They only had the 1Tb device in a like configuration, I did a little negotiation with them to not have to eat the full upgrade cost and essentially they said if I buy AppleCare on the spot with some business discounts it was pretty close to a wash.

I have been running this Mac in the same fashion I was the other with the same software, etc. and I have yet to have any resets in two and a half days.

I will keep everybody apprised.