Kernel panic after waking up: DCP PANIC - ASSERT!AppleDCPDPTXPowerController.cpp:538

Hey everyone!

For some time now ive been getting regular kernel panics. It is always the same code (AppleDCPDPTXPowerController.cpp:538)

It happens quite often after my Mac goes to sleep and I wake it up etc.

I even made a video of how I reproduce the problem (lock the screen and press ESC several times).


I have reinstalled MacOS few times. I even wiped the whole SSD and did a complete fresh install with a new user - same problem. No matter what MacOS version (14.4 or 14.5...)


Have you ever seen something like that? How to fix it?


Video: https://www.youtube.com/watch?v=hjDMRXlbfHc


Logs:

panic(cpu 0 caller 0xfffffe001d1592a8): DCP PANIC - ASSERT!AppleDCPDPTXPowerController.cpp:538 No device added after powering on the rails. HPD=0 - dcpav(27)
ASSERT!AppleDCPDPTXPowerController.cpp:538 No device added after powering on the rails. HPD=0
RTKit: RTKit-2419.120.45.release - Client: local-ipad14dcp.RELEASE
!UUID: c9ec7307-40ef-3a92-8ffa-2401fdb3638f
Time: 0x0000000035c815f5

Faulting task 27 Call Stack: 0x000000000001eae0 0x000000000001e4d0 0x000000000001e2d4 0x0000000000017594 0x0000000000058540 0x00000000000fde50 0x000000000001f228 0x00000000000fdba4 0x0000000000058438 0x00000000001080dc 0x00000000000fd7c8 0x000000000001ef54 0x0000000000019e3c
// and tons and tons of "RTKit Task List" Items etc - I can provide the whole list

MacBook Air (M2, 2023)

Posted on Jun 26, 2024 11:55 AM

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Question marked as Top-ranking reply

Posted on Jun 27, 2024 10:41 AM

There are many documented cases of this happening in recent months with m2 machines. Only solution is to prevent the machine from sleeping. Apple has yet to release a fix, nor have I seen acknowledgement of the issue.

Similar questions

45 replies

Nov 19, 2024 10:43 AM in response to yadavanurag

Upgrading to Sequoia (MacOS 15) resolved about 90% of my issues but I still occasionally experience a kernel panic after the display goes to sleep. After reading your issues with Adobe, I'm thinking Adobe Creative Cloud might be part of my issue. Since I rarely use the Adobe apps, I figure I don't need Adobe Creative Cloud always running in the background. I will turn it on, as needed.


Hopefully that will resolve what the upgrade failed to resolve.

Nov 24, 2024 1:00 PM in response to HWTech

It can be reproduced using the following method (found on Reddit) here:

https://www.reddit.com/r/mac/comments/1c3cnsr/unexpected_restart_on_macbook_air_m2/

https://www.reddit.com/r/mac/comments/1cwc1hz/no_device_added_after_powering_on_the_rails_a/



  • If I put my MacBook to sleep, wait a moment, then spam the Esc key (interrupting the sleep wake-up process), I get this error 100% of the time. 
  • If I put my MacBook to sleep while simultaneously spamming inputs (interrupting the go-to-sleep process), I get this error 100% of the time. Inputs that I’ve found reliably interrupt the go-to-sleep process: 


    1. Spamming any keyboard key on integrated keyboard OR external Bluetooth keyboard 

• 2. Jiggling of mouse on trackpad OR external Bluetooth mouse

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Kernel panic after waking up: DCP PANIC - ASSERT!AppleDCPDPTXPowerController.cpp:538

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