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Question: MBP 2017 crashing caused by closed clamshell startup problems

If I start up with the closed clamshell operation (cover closed, external screens, wireless KB, Trackpad working/in use) then wait a bit for everything to finish starting, then open the cover I get a crash (kernel panic)- the screens freeze and the computer becomes unresponsive. Only way to recover from this scenario is to restart, with the cover open.


Then, if starting from the cover open, then close the cover to go back to closed clamshell mode, no problem! You can go back and forth between modes from that point without problems.


It's just starting with closed clamshell that causes issues. This has been happening since I got this machine and never happened before on previous MBP 2014.


Anybody have this bug?

MacBook Pro TouchBar and Touch ID, macOS Sierra (10.12.5)

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Nov 20, 2017 6:14 AM in response to Henry-In-FL In response to Henry-In-FL

Thanks all.


Just looking to see if this affects anybody else. I tried all the remedies suggested here so far, (recapping): SMC, Safeboot>PRAM. No-go on any differences. In fact that's how I determined exactly how to make the problem happen consistently, as described in my post. Nothing appears out of the expected except it continues to crash. Seems to me that you should be able to start with the cover up or down. Moreover, it used to be my workflow, working fine on MBP 2014 with Sierra and earlier.


Also tried to use another system startup from an external device. No change. I didn't try a bare metal OS install of High Sierra with an old format drive (non-APFS). Am considering trying that one, suggested to AppleCare as a next step.


Went the AppleCare support route because I couldn't determine if it was hardware, software or something else (as in not designed to work this way). Then the advisor referred the problem to to Apple Engineering. They couldn't either despite massive followups (weeks waiting, trying a step, waiting, etc.). So that's where I am now...


Note that I am on High Sierra 10.13.1

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Nov 17, 2017 4:36 PM in response to Henry-In-FL In response to Henry-In-FL

Hi there, Henry-In-FL.

I see that, when you start up your MacBook Pro in closed-display mode, it stops responding and provides a kernel panic report. I'm happy to help.

macOS Sierra: If your Mac restarts and a message appears -- Follow the steps provided in this support article.


Cheers!

Nov 17, 2017 4:36 PM

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Nov 20, 2017 6:14 AM in response to Henry-In-FL In response to Henry-In-FL

Thanks all.


Just looking to see if this affects anybody else. I tried all the remedies suggested here so far, (recapping): SMC, Safeboot>PRAM. No-go on any differences. In fact that's how I determined exactly how to make the problem happen consistently, as described in my post. Nothing appears out of the expected except it continues to crash. Seems to me that you should be able to start with the cover up or down. Moreover, it used to be my workflow, working fine on MBP 2014 with Sierra and earlier.


Also tried to use another system startup from an external device. No change. I didn't try a bare metal OS install of High Sierra with an old format drive (non-APFS). Am considering trying that one, suggested to AppleCare as a next step.


Went the AppleCare support route because I couldn't determine if it was hardware, software or something else (as in not designed to work this way). Then the advisor referred the problem to to Apple Engineering. They couldn't either despite massive followups (weeks waiting, trying a step, waiting, etc.). So that's where I am now...


Note that I am on High Sierra 10.13.1

Nov 20, 2017 6:14 AM

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Nov 20, 2017 6:14 AM in response to Henry-In-FL In response to Henry-In-FL

Determined by substitution and elimination of hardware that it is a hardware problem and is caused by one of the two connected displays (Dell P2715Q). With that product attached with a DP to USB-C cable the MBP will crash only after restarted from a closed cover (closed clamshell) mode when the cover subsequently re-opened. As this affects the specific model of MBP (from previous experience, not 2014 models with Sierra) and MacOS combo, and the display works in all other aspects, I'm asking Apple for a hardware or software solution covered by AppleCare on confirmation of the situation by them.


Thanks to Allen and kaz for your help!

Nov 20, 2017 6:14 AM

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Question: MBP 2017 crashing caused by closed clamshell startup problems