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Mac mini 2018 crashes on shut down.

W

WilliamG

macrumors G4
Original poster
Mar 29, 2008
10,045
3,955
Seattle
So this is mega annoying!

I just got a new 2018 Mac mini yesterday, and I'm having this issue. Fresh MacOS Mojave install. I shut down the Mac mini, and it just starts up by itself, and gives me this error upon boot:

{"caused_by":"macos","macos_system_state":"running","bug_type":"210","os_version":"Bridge OS 3.2 (16P2542)","timestamp":"2018-12-30 22:50:34.59 +0000","incident_id":"2742029F-5C02-446E-B103-653293A5204A"}

Some more info:

"macOSPanicString" : "panic(cpu 0 caller 0xffffff8014678b82): \"PowerOff timed out in phase 'Notifying power plane drivers'. Total 30000 ms:\nvfs_unmountall: 382 ms\nif_down_all: 173 ms\nPowerOff\/Restart message to priority client: 3621 ms @ 0x<ptr>, com.apple.iokit.IOStorageFamily(2.1)[7D6A3E9B-D1CD-3F8B-9800-C4B943806679]@0x<ptr>->0x<ptr>\nPowerOff\/Restart message to priority client: 3620 ms @ 0x<ptr>, com.apple.iokit.IOStorageFamily(2.1)[7D6A3E9B-D1CD-3F8B-9800-C4B943806679]@0x<ptr>->0x<ptr>\nPowerOff\/Restart message to priority client: 3652 ms @ 0x<ptr>, com.apple.iokit.IOStorageFamily(2.1)[7D6A3E9B-D1CD-3F8B-9800-C4B943806679]@0x<ptr>->0x<ptr>\nPowerOff\/Restart message to priority client: 3640 ms @ 0x<ptr>, com.apple.iokit.IOStorageFamily(2.1)[7D6A3E9B-D1CD-3F8B-9800-C4B943806679]@0x<ptr>->0x<ptr>\nPowerOff\/Restart message to priority client: 3638 ms @ 0x<ptr>,


*EDIT*

Now, I have some Thunderbay 4 enclosures connected, and they take a little bit to shut down when the system is turned off. I think the Mac mini is basically thinking it's crashed because the drives spin down one by one. If I have just one Thunderbay 4 connected, the system is fine on shut down, but if I have all 5 connected, it's taking too long to shut down - hence the crash and automatic startup. Frustrating!

Is there a way to get around this? My 2014 mini never had this issue.
 
Last edited:
bridgeOS is just the T2 chip, all kernel panics will show that so not much useful info in the panic log there. Disconnect external devices until it doesn't do that any more, and then work with whomever makes the device causing the problem to work out a solution.
 
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What happens if you dismount all of the external drives in the finder before attempting to shut down?

Do you access all of the drives frequently?
Is it really necessary to keep them all plugged in all the time?

What happens if you log out, and then choose "shut down" from the login screen?
 
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FreakinEurekan said:
bridgeOS is just the T2 chip, all kernel panics will show that so not much useful info in the panic log there. Disconnect external devices until it doesn't do that any more, and then work with whomever makes the device causing the problem to work out a solution.
Click to expand...

It's nothing to do with a specific device, as I mentioned above.

Fishrrman said:
What happens if you dismount all of the external drives in the finder before attempting to shut down?

Do you access all of the drives frequently?
Is it really necessary to keep them all plugged in all the time?

What happens if you log out, and then choose "shut down" from the login screen?
Click to expand...

No difference if I eject all drives. They stay running, and cause the issue on shut down.

I run a media server, and I need my drives all connected ALL the time. They go to sleep when not running actively. Your response sounds like I'm using my Mac mini wrong. :D

Issue remains if I log out first and then shut down.

*edit*

I cannot shut down with any TWO Thunderbay 4 devices connected. The system thinks it's hanging/crashing, and then starts back up. ANNOYING.
 
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OP:

How do you have your "Startup Security Utility" configured?
(you have to reboot to the recovery partition to access it, I believe)
 
Fishrrman said:
OP:

How do you have your "Startup Security Utility" configured?
(you have to reboot to the recovery partition to access it, I believe)
Click to expand...

I’ll check, but what would startup security have to do with this when it’s a shut-down issue?

FreakinEurekan said:
:rolleyes:
Click to expand...

Clever reply. Well done. Started off 2019 with a bang.

I’m saying it’s a Mac issue. Not a device-specific issue. I bet you it would do this with any multi hard-drive enclosure with ~8 hard drives total. And it doesn’t do this on a 2014 mini.
 
Fishrrman said:
OP:

How do you have your "Startup Security Utility" configured?
(you have to reboot to the recovery partition to access it, I believe)
Click to expand...

I hadn't touched it. For giggles I enabled the ability to external boot, and it didn't make a difference. Quite simply: The 2018 Mac mini doesn't allow enough time for many hard drives to shut down sequentially. It's unfathomable that Apple let this one through, given these are used in data centers etc.
 
I have 3 diffrent OWC bay units connected on my Mini 2018

one is TB3 the other 2 ( mini and Elite dual ) are TB2 all but 2 drives are SSD with 2 WD 4tb red.

Using Apple TB3 to TB2 adapter.

I do not see this problem on shutdown BUT I think I saw a post on macintouch that may match yours.

( I did change start up security as I have dev beta and am testing Softraid ) ( AND still trying to boot older system )
(no problems with Windows 10 in boot camp)
 
Cordorb said:
I have 3 diffrent OWC bay units connected on my Mini 2018

one is TB3 the other 2 ( mini and Elite dual ) are TB2 all but 2 drives are SSD with 2 WD 4tb red.

Using Apple TB3 to TB2 adapter.

I do not see this problem on shutdown BUT I think I saw a post on macintouch that may match yours.

( I did change start up security as I have dev beta and am testing Softraid ) ( AND still trying to boot older system )
(no problems with Windows 10 in boot camp)
Click to expand...

The reason you don't see an issue is because most of your disks are SSD. I have a Thunderbay 4 mini, and with that connected, too, I see no issue because those instantly are off.

Do you have a link to the thread with someone else with my issue?

Thanks for the help!
 
"I tried. Not happening. That site is a mess..."

A "mess"?
Hardly.
In fact, it's one of the oldest, longest-running Mac resources out there.
I suggest you try again, like Arlo says, "this time with feelin'..."
 
Fishrrman said:
"I tried. Not happening. That site is a mess..."

A "mess"?
Hardly.
In fact, it's one of the oldest, longest-running Mac resources out there.
I suggest you try again, like Arlo says, "this time with feelin'..."
Click to expand...

I don't even see a usable search area. It's just a wall of text for me.
 
Last edited:
Fishrrman said:
"I tried. Not happening. That site is a mess..."

A "mess"?
Hardly.
In fact, it's one of the oldest, longest-running Mac resources out there.
I suggest you try again, like Arlo says, "this time with feelin'..."
Click to expand...

If you'd like to be helpful, I'd appreciate it. I simply cannot find anything of use on that site.
 
Ok so I’ve narrowed this issue down to being able to shut down the mini cleanly with 7x hard drives connected. Anything above and the system crashes on shut down due to the elongated shut-down procedure of powering down each hard drive sequentially.

Not sure what to do to get this addressed...
 
"Not sure what to do to get this addressed..."

Looks like the solution is to eject and then power-down the drives BEFORE you initiate a shutdown sequence on the Mini.

I wouldn't expect Apple to "fix" this.
 
Fishrrman said:
"Not sure what to do to get this addressed..."

Looks like the solution is to eject and then power-down the drives BEFORE you initiate a shutdown sequence on the Mini.

I wouldn't expect Apple to "fix" this.
Click to expand...

I have to eject the drives and then physically unplug them every time I shut down. That’s crazy. This was never an issue on my 2014 mini. :(
 
"I have to eject the drives and then physically unplug them every time I shut down. That’s crazy. This was never an issue on my 2014 mini."

I'll offer this as a possible "workaround":
- Get a power strip with 8 outlets and "room enough between them" to accommodate the power bricks for the drives (if any)
- Plug all the drives into their own dedicated power strip
- Turn the strip on when you boot up
- When you're ready to shut down, dismount the drives, and THEN reach down and turn the strip off killing all the drives at once.

Even if it's not "the solution", it could make the process go more easily.
 
Fishrrman said:
"I have to eject the drives and then physically unplug them every time I shut down. That’s crazy. This was never an issue on my 2014 mini."

I'll offer this as a possible "workaround":
- Get a power strip with 8 outlets and "room enough between them" to accommodate the power bricks for the drives (if any)
- Plug all the drives into their own dedicated power strip
- Turn the strip on when you boot up
- When you're ready to shut down, dismount the drives, and THEN reach down and turn the strip off killing all the drives at once.

Even if it's not "the solution", it could make the process go more easily.
Click to expand...

I appreciate the thought. Sadly that won’t work for me as I’ve got all drives plugged into a UPS.
 
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