XPS 15 9520 (2022) Bluetooth audio stuttering, not working properly, disconnecting

Hey how did you reconnect the antenna? I'm having similar issues with my 9520

I recommend you first to be sure it's a hardware problem (maybe trying with another operative system or with a factory reset, like I did), and if you are sure it's not a software problem, then just search for a picture or a video (YouTube) about the wireless antenna on the XPS 15 9520... In short, it's on the left side of the SSD Slot 1. 

Halfway down the left side (if the touchpad is towards you) there is a small silver plate as shown in gas_zeal photo. Remove this by removing the black screw, and under there are 2 wires with push connectors. One of mine was loose. Just line it up and push down. Put the protector plate on and pop the casing on.

Make sure your laptop is powered off beforehand.

I did the same.

What's really interesting is I have this problem too and I've tried MANY things, including a Windows Reinstallation, BIOS update, driver update, DISM Check, SFC /scan, Windows Update, and more! 

The other day I was experiencing issues with the audio stuttering with Bluetooth headphones, as well as the connection disconnecting and reconnecting rather rapidly. 
In an attempt to band-aid the problem, I tried turning off Bluetooth. 
The Bluetooth REFUSED to turn off, so I exited out of settings and went back into settings where the bluetooth toggle was OFF, but it still said my headphones were connected. (to be fair, they didn't ever disconnect or it would have told me in my headphones "disconnected") 
So I turned bluetooth back on, and tried to manually disconnect the device. 
It wouldn't let me do that either, so I tried turning my headphones off, but the devices still showed it connected even with them off. 

Finally, I gave in and decided to restart the computer. The computer hung in a restart state for what felt like ages before I got a Windows Blue Screen. 

With a little help from Bing AI to track down where the BSOD report was, and a Microsoft app called WinDBG, I was able to find and open the DMP file that included the blue screen report. 

Here's the top of that report:

DRIVER_POWER_STATE_FAILURE (9f)
A driver has failed to complete a power IRP within a specific time.
Arguments:
Arg1: 0000000000000004, The power transition timed out waiting to synchronize with the Pnp
	subsystem.
Arg2: 000000000000012c, Timeout in seconds.
Arg3: ffffab8927f3e040, The thread currently holding on to the Pnp lock.
Arg4: fffffe0e62f07740, nt!TRIAGE_9F_PNP on Win7 and higher

Upon further analysis I also found this: 

DUMP_FILE_ATTRIBUTES: 0x1808
  Kernel Generated Triage Dump

DRVPOWERSTATE_SUBCODE:  4

HARDWARE_ID_BUS_TYPE:  BTH

HARDWARE_ID:  BTH\MS_BTHBRB

IMAGE_NAME:  BthEnum.sys

MODULE_NAME: BthEnum

FAULTING_MODULE: fffff80247d10000 BthEnum

Do you all think that this is indicative of a loose connection, or something worse such as a bad driver? 

Additionally, upon reviewing the minidump subfolder inside of the Windows folder, I found that this has happened, with the same error, 5 other times since 9/1/23 and it is now 11/6/23 

I have access to more information and the tools to debug this, but not the knowledge. Any advice or questions would greatly be appreciated! 

Lastly, Dell support is asking me to uninstall and reinstall the bluetooth drivers. 

Thoughts, opinions, ideas, questions?

Let me know

Thanks

-Cypher

@gas_zeal​ Interesting. I am going to have to check this, because when I first bought my XPS-15(9520) it died after receiving it because the battery became disconnected. 
This not only makes this ones connections questionable, but also the thermal paste on the CPU and more. 

@VoidsCypher​ I am facing the exact same issue. Everything that you described.

It was working fine until I decided it was time to reinstall Windows. After that, multiple re-installs, drivers, commands and diagnostic tests were done and the problem doesn't go away.

to me seems like there is a problem in this intersection between Intel's Bluetooth drivers and Dell's power management.

Dell, I also almost always get DRIVER_POWER_STATE_FAILURE when I use bluetooth headphones. Any solution to this?