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

WTech - Thank you so much for your expertise and advice. I'm experiencing this issue on startups and a few times when the display wakes after having gone to sleep.

Last night, I made the mistake of telling the Genius Bar tech that folks on the web were saying "Replacing the display and the lid angle sensor would fix the problem." That was the wrong approach with this tech person. Even when her diagnostics indicated a problem with the lid angle sensor, she just ran her diagnostics a second time and it came out clean.

I'm thinking about waiting for awhile before taking my laptop into a Genius Bar for a second time, hoping that in another few months Apple Support will have a better handle on the problem and I'll have a lot more documentation that will be helpful.

Is there any issue with not getting this repaired sooner?

This is a software BUG, ​​for some reason some software causes this error. I was on Sequoia and it started happening for no apparent reason. After I downgraded to Sonoma 14.7, the problem went away.

MacBook M3 PRO

Error:

panic(cpu 5 caller 0xfffffe002b8454ec): DCP PANIC - ASSERT!AppleDCPDPTXPowerController.cpp:564 No device added after powering on the rails. HPD=0 - dcpav(27)

ASSERT!AppleDCPDPTXPowerController.cpp:564 No device added after powering on the rails. HPD=0

RTKit: RTKit-2758.60.99.release - Client: AppleDCP-811.60.48~457-t6030dcp.RELEASE

!UUID: a1000010-2140-1ed5-a178-80d201401ed5

ASLR slide: 0x0000000000194000

Time: 0x000000006194a393

Faulting task 27 Call Stack: 0x00000000001b3f64 0x00000000001b3924 0x00000000001b3738 0x00000000001ac368 0x000000000020cd38 0x0000000000215da0 0x00000000002f55c4 0x00000000002e5db4 0x00000000001b43b8 0x00000000001aeebc 000000000000000000

RTKit Task List:

name | pri | stack use | status | resource | warning

0 rtk_background | 007 | 848/2048 | SEMWAIT | 0xa70060 |

0x00000000001ae390 0x00000000001af2fc 0x00000000001b434c 0x00000000001aeebc

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.

Just checking up is the device still error free?

@Utania Is that something only the Apple Store staff can do? Or do you mean that the genius reset the PRAM?

No it is not still error free. The kernel panics returned after a week or so. Now it happens every few days.

There is no PRAM on the M series processors.

I submit an error report every time a panic occurs. Otherwise, how exactly do you contact Apple directly?

What perhaps are you talking about? I already told you we have notified Apple about the issue. There is no perhaps here.

I know for a fact that Apple store genius bar has seen the issue many times. It’s Apple’s choice whether or when they want to act on it. I hope it is clear.

I am experiencing the same issues. It just started happening. Can I bring it in for a replacement?

I'm getting the same issue pretty regularly. I'm going to bring it to the Apple Store/Genius Bar. I'm also reporting it, as I assume others are.