MacBook Pro 15" (2016) Crashing while connecting/disconnecting the LG 5K Monitor

It's been 5 months since this article was written.

Has anyone got it fixed?

I recently bought LG 27UD88 for my MacBook pro 13" with touch bar.

And I'm having daily kernel panics with USB-C connections.

I guess there is a common problem for USB-C monitor with charging.

Fri Jun 23 11:13:40 2017

*** Panic Report ***

panic(cpu 1 caller 0xffffff80127ff2dd): Kernel trap at 0xffffff7f94f04b92, type 14=page fault, registers:

CR0: 0x000000008001003b, CR2: 0x00000000000000dc, CR3: 0x0000000452746033, CR4: 0x00000000003627e0

RAX: 0x0000000000000000, RBX: 0xffffff80352f8600, RCX: 0x00000000c4082030, RDX: 0xffffff81afa3d000

RSP: 0xffffff92132f3950, RBP: 0xffffff92132f3960, RSI: 0x00000000041f052b, RDI: 0x0000000000080000

R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000001fd3

R12: 0xffffff81afa39000, R13: 0x00000000041f0000, R14: 0x000000000fdf1fd3, R15: 0x00000000041f052b

RFL: 0x0000000000010206, RIP: 0xffffff7f94f04b92, CS: 0x0000000000000008, SS: 0x0000000000000010

Fault CR2: 0x00000000000000dc, Error code: 0x0000000000000000, Fault CPU: 0x1, PL: 0, VF: 0

Backtrace (CPU 1), Frame : Return Address

0xffffff92132f35e0 : 0xffffff80126ea53c

0xffffff92132f3660 : 0xffffff80127ff2dd

0xffffff92132f3840 : 0xffffff801269b593

0xffffff92132f3860 : 0xffffff7f94f04b92

0xffffff92132f3960 : 0xffffff7f94f5192b

0xffffff92132f39c0 : 0xffffff7f94f5124b

0xffffff92132f3a10 : 0xffffff7f94f24378

0xffffff92132f3ae0 : 0xffffff7f93c8cead

0xffffff92132f3b20 : 0xffffff8012ce3371

0xffffff92132f3b80 : 0xffffff8012cec391

0xffffff92132f3cc0 : 0xffffff80127be2f8

0xffffff92132f3dd0 : 0xffffff80126ef7bc

0xffffff92132f3e30 : 0xffffff80126cbfb1

0xffffff92132f3e80 : 0xffffff80126e0777

0xffffff92132f3f10 : 0xffffff80127eb1d8

0xffffff92132f3fb0 : 0xffffff801269bdb6

Kernel Extensions in backtrace:

com.apple.iokit.IOGraphicsFamily(515.3)[A423518D-758D-3021-A111-A59F44D760A8]@0 xffffff7f93c7f000->0xffffff7f93cbafff

dependency: com.apple.iokit.IOPCIFamily(2.9)[BD9FCDEF-30CB-3911-B247-EE51DD069C76]@0xffffff 7f92fbe000

com.apple.driver.AppleIntelSKLGraphicsFramebuffer(10.2.5)[B8793C18-FD78-3FF2-85 0D-524C18390510]@0xffffff7f94f03000->0xffffff7f950cdfff

dependency: com.apple.iokit.IOPCIFamily(2.9)[BD9FCDEF-30CB-3911-B247-EE51DD069C76]@0xffffff 7f92fbe000

dependency: com.apple.iokit.IOACPIFamily(1.4)[4F7FB6AD-2498-3F71-827C-ED7AA4BF2511]@0xfffff f7f93292000

dependency: com.apple.iokit.IOAcceleratorFamily2(311.13)[4E8ED752-4109-3D72-9C13-D26BD3B108 CF]@0xffffff7f94e58000

dependency: com.apple.iokit.IOReportFamily(31)[B14DC3D3-7250-3DA3-BF50-C666EBEDAF4C]@0xffff ff7f93bbd000

dependency: com.apple.AppleGraphicsDeviceControl(3.14.47)[396A06E0-FB78-3045-AD37-F21ED2172 191]@0xffffff7f94ef7000

dependency: com.apple.iokit.IOGraphicsFamily(515.3)[A423518D-758D-3021-A111-A59F44D760A8]@0 xffffff7f93c7f000

I too have issues with the MacBook Pro 2016 15" AMD 460 model, it often crashes with kernel and/or gpuRestart System Reports. I've had several replacement laptops thus far.

The problem is being blamed by Apple on my software, despite happening out of the box with sod all on the machine.

This is with the latest 10.12.5 release.

Issues include:

(a)

Total crash and lock up requiring hard power off/on to reboot

(b)

Soft Crash where the machine does self-restart and reload the OS without me doing anything

(c)

dull red images on in-built display when opening lid with monitors connected to try and resolve (a) or (b) - but not always red or displaying anything

I have many other issues beyond these monitor/crash issue with this model, but wanted to add my voice to this issue.

From my recent observation,

It's likely to crash when I connect USB-C to USB-C cable or USB-C to DP cable on the right side USB-C port.

I'll be only using the left side for monitors to see if the issue recreated.

I think there might be a defect with the I/O bus handling the right side peripherals or MacOS software.

Is there any member of Apple technical support team reads this thread?

My Mac is 2016 MBP 13" with touch bar.

I've been having this same issue, not with a monitor, but with the Other World Computing Thunderbolt 3 dock. I've found that I only get the crash when I plug in my iphone or anything else that requires charging. As I kept testing, I've noticed it happens with ANY USB-C adapter that I plug my phone into the charge. The USB3 dock itself does not crash the system (even though it draws power), but anything I plug into it to charge starts a crash if I sleep the computer.

I took it in once already to the Apple store and they told me it was a software issue, so I erased the machine and did a clean install of the software with the same results. I'm on 10.12.6.

I experience the same issue since upgrading to High Sierra, previously I never experienced this issue. My MacBook is the 15 inch first gen from fall 2016. I was quite surprised to find out many people experienced the issue earlier before High Sierra, I assumed it's related to the OS release. I have a LG 5k display at home and at the office and both give me crashes, so it's definitely not related to the screen hardware. Using latest High Sierra version and latest LG 5K firmware.

Does anyone know for certain if it's a hardware issue or a software issue?

I am always plugging my monitor on the right side of the MacBook Pro and will try to plug in on the left side now to see if that solves the issue. Already got 2 keyboard replacements and would hate to bring in my MacBook for a third repair...

Edit: I think I noticed it already crashes when I open from clam shell mode, rather than simply unplugging the cable. Will observe that closer too.

I had crash issues from earlier version of Sierra but they fixed that since 10.12.3. Now the issue comes back again in High Sierra (10.13.1). I'm inclined to think that it's a software issue but you never know. It could be related to certain hardware or firmware. It's getting quite annoying now as this problem seems to be worse than those found in the initial version of Sierra (10.12.1 - 10.12.2).

I'm not sure I ever reproduced the crashing at the store, but I just saved all the crash reports, and by the 3rd time going in, they said they would send it in for a more in-depth hardware diagnostics, and repair
(if they found anything to repair) and they replaced the logic board, which has solved the problem for me.

I’ve found a consistent way to reproduce the problem. Before connecting the LG monitor, do one of the following:

1. Capture video from an iOS device through a USB cable using QuickTime Player

2. Run Final Cut Pro X

Now, connect the LG monitor. MBP hangs immediately!

I think that I found the problem.

My MacBook Pro (15",early 2016, with Touch Bar / High Sierra 10.13.1) has deleted my Touch IDs. Its the third time now that it happened - did somebody else have this problem? Anyway... since my Touch ID are again deleted it seems that my MacBook don't crash anymore in combination with my UltraFine 5k (LG Screen Manager 2.08 / Software Version of Monitor 3.04.....).

So just deactivate your Touch ID and you will have no longer this issue. I report this bug to apple.
And I also write an post at macrumors -> https://forums.macrumors.com/threads/lg-ultrafine-5k-issues-bugs.2024679/page-30 #post-25500911

Apple is so clueless. I’ve opened half a dozen tickets and I don’t even get responses anymore. Worst service I’ve dealt with in a long while.

I’ll try your suggestion, but if that turns out to be it, then this would make the touchbar the worst product from Apple since the Newton!

I got a new logic board from Apple, which means I had to reinstall everything from scratch which took me half a day. Unfortunately the problem is not solved and my Mac keeps crashing when I unplug and replug the screen. It's less frequent than before (Before it was like 75% of the time, now only 25%) but it still ridiculous that it happens 2-3 times per day still. I will try deactivating Touch ID and yes mine was gone several times too... this computer is a disaster

PS: Unlike the other poster I got a 2016 logic board so maybe that's why the problem still exists

Removing LG manager does not help...

The engineering team send me a message that they have fixed this problem in 10.13.2 beta 4.

I installed beta 4 yesterday and it happened again. I think the problem is the 460 GPU. I had this problem even before with the Sierra. I know other people with the same computer and they have same problem irrespective of the OSthey are running in their system.