BSOD (7e) in Resolve Studio Beta – Suspected dxgmms2.sys / DirectX Issue Impacting NVIDIA GPU

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Hello NVIDIA Team,

I’m experiencing recurring BSODs while using DaVinci Resolve Studio 20 Beta under GPU-intensive (Fusion-heavy) workloads on my system. The crashes are presenting as a SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e) error and, after investigating the dump files, it appears that the fault is in the DirectX graphics memory management module (dxgmms2.sys).

Below is an excerpt from one of the dumps that may help diagnose the issue:

SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e)
This is a very common BugCheck. Usually the exception address pinpoints the driver/function that caused the problem.
Arguments:
Arg1: ffffffffc0000005 (The exception code that was not handled)
Arg2: fffff80234d03f83 (The address where the exception occurred)
Arg3: fffff303df8d6d58 (Exception Record Address)
Arg4: fffff303df8d6540 (Context Record Address)

Debugging Details:
Failure.Bucket: AV_dxgmms2!VIDMM_PAGE_DIRECTORY::ExpandLargePagePte
Failure.Exception.Code: 0xffffffffc0000005
Failure.Exception.IP.Address: 0xfffff80234d03f83
Failure.Exception.IP.Module: dxgmms2
Failure.Exception.IP.Offset: 0x103f83
— The dump shows that dxgmms2!VIDMM_PAGE_DIRECTORY::ExpandLargePagePte+0xd3 attempted to execute:
sub rsi, qword ptr [rax+48h]
resulting in an access violation (attempt to read from address 0000000000000048).
BUGCHECK_CODE: 7e
BUGCHECK_PARAMETERS:
P1: ffffffffc0000005
P2: fffff80234d03f83
P3: fffff303df8d6d58
P4: fffff303df8d6540

System Details:

  • GPU: NVIDIA GeForce RTX 5070 (12GB VRAM)
  • Driver: NVIDIA Studio Driver version 572.83
  • OS: Windows 11 (22H2)
  • CPU: Intel Core i7-14700K
  • RAM: 64 GB
  • DaVinci Resolve: Studio Beta 20 (20.0.0.23)
  • DirectX: Version 12

Observations:

  • The BSODs consistently reference dxgmms2.sys, indicating an unhandled access violation (0xc0000005) in the function VIDMM_PAGE_DIRECTORY::ExpandLargePagePte.
  • The crash occurs during heavy GPU workloads in Resolve, particularly when processing complex Fusion tasks.
  • These findings suggest that the issue might not be solely within DaVinci Resolve, but could instead point to a problem in the interaction between DirectX (specifically dxgmms2.sys) and the NVIDIA driver stack potentially a bug in how memory pages are handled or expanded.

I would appreciate any insights or recommendations on potential workarounds, driver flags, or adjustments that might mitigate these BSODs.

I’m happy to provide further diagnostic logs or additional dump files if needed. I’ve also already reported this issue to Blackmagic Design support

Thank you very much for your time and expertise.

Best regards, Javier

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