BSOD: Driver Verifier DMA Violation with TB16 Docks

I doubt installing the OS is going to solve anything.  If it was only happening on one machine, then sure, maybe the OS was bad.  But when it's happening on hundreds of machines, doubtful they all happen to have the same OS problem.  I don't think I've had it on our 9570s since I started running Dell Command Update, the dock firmware, and checking he ASmedia driver on all of them.

So you created a GPO to set that setting to which option? 0, 1, 2?

This has stopped my issue.  Still working through some Realtek USB GbE issues - where the NIC seems to freeze up via the Dock.

More information on what DMAremapping does:

https://docs.microsoft.com/en-us/windows/client-management/mdm/policy-csp-dmaguard

This policy is intended to provide additional security against external DMA capable devices. It allows for more control over the enumeration of external DMA capable devices incompatible with DMA Remapping/device memory isolation and sandboxing.

Device memory sandboxing allows the OS to leverage the I/O Memory Management Unit (IOMMU) of a device to block unallowed I/O, or memory access, by the peripheral. In other words, the OS assigns a certain memory range to the peripheral. If the peripheral attempts to read/write to memory outside of the assigned range, the OS blocks it.

System model- 2019 Dell XPS-15 9570
BIOS Version - LATEST (updated 03-02-2019)
ASMedia version –LATEST (updated 03-02-2019)
Exact Bluescreen error - DRIVER_VERIFIER_DMA_VIOLATION
Event viewer error if any - N/A

Happens when system is docked to the TB-16, and when I'm running an install script for Vagrant - SPECIFICALLY (happened TWICE in EXACTLY the same place) when the script was installing the python requirements for the virtual machine.  When I re-ran vagrant up when UN-DOCKED the script runs fine and no blue screen.  PLEASE HELP! This is a machine specifically purchased for work - I can't afford the downtime - as I am sure most of the guys who've already posted.

Same issue, xps 9370, tb16

Good to see I am not alone with this issue. Dell XPS 13 9360.

Also same issue, with a Precision 3530 and a TB 16.

Same here with Precision 5520 and TB16 after updating several drivers.

Same problem on 9560+TB16 started just after ASMedia USB Extended Host Controller Driver upgrade to 1.16.55.1 (but issue still remains even after downgrade of this driver)

For completion here are the details of our System Configuration:

System model- Precision 5520 (60 Machines in our Company)
BIOS Version - 1.12.1 & 1.13.1
ASMedia version –ASMedia 1.16.55.1
Exact Bluescreen error - Driver Verifier DMA Violation
Event viewer error if any -

I traced my problem to external soundcard ASUS XTU connected to  docking station
when it was turned off, system was stable

then I edited registry as suggested in 

https://www.dell.com/community/XPS/BSOD-Driver-Verifier-DMA-Violation-with-TB16-Docks/m-p/7250845/highlight/true#M25485

and issue is resolved

I have been getting these Bluescreens for 2 or 3 days now... one I know of yesterday and 2 today.

I have an XPS 15 9550 with the TB16 Dock.

This registry hack (removing DmaRemappingCompatible) didn't help me. Because the entry was automatically created again after removal.