D3D11 - Cross Adapter Scan Out Manual Test (Hybrid, Manual)

Manual test with togglable display parameters to confirm the absence of content or tearing corruptions.

Test details

  • Device.Graphics.WDDM30.Render.CrossAdapterScanOut
  • Windows 10, client editions (x86)
  • Windows 10, client editions (x64)
  • Windows Server 2016 (x64)
  • Windows 10, client editions (Arm64)
  • Windows 10, mobile edition (Arm)
  • Windows 10, mobile edition (Arm64)
Supported Releases
  • Windows 10
  • Windows 10, version 1511
  • Windows 10, version 1607
  • Windows 10, version 1703
  • Windows 10, version 1709
  • Windows 10, version 1803
  • Windows 10, version 1809
  • Windows 10, version 1903
  • Next update to Windows 10
Category Development
Timeout (in minutes) 20
Requires reboot false
Requires special configuration true
Type manual

Additional Documentation

Tests in this feature area might have additional documentation, including prerequisites, setup, and troubleshooting information, that can be found in the following topic(s):

Running the test

This is a manual HLK test that requires a tester to toggle between different parameters while verifying the absence of any visual corruptions/artifacts or unexpected tearing in the app.


The test app has some requirements:

  1. A hybrid machine with both a discrete GPU and an integrated GPU.
  2. Monitor with support for 60 Hz refresh rate and >= 120 Hz refresh rate(s).
  3. Monitor with support for 1920p x 1080p and display resolution(s) > 2560p x 1440p.

The test app comes in two modes:

  • Conformance Mode: The default mode that validates that test requirements are being satisfied and that the feature is being successfully exercised in a manner consistent with the reported capability. The test will exit upon detecting failures.
  • Functional Mode: The debug mode that performs the same validation as conformance mode, but only outputs warning messages upon detecting failures.

The test app has some togglable parameters:

  1. D3D Runtime: D3D12, D3D11
  2. Display Mode: 1920x1080x60Hz, Resolution > 2K, Refresh Rate >= 120 Hz, Highest Bandwidth Mode
  4. Buffer Size: 1920 x 1080, Maximum Possible Display Resolution
  5. Sync Interval: SYNC_0_WITH_TEARING, SYNC_0, SYNC_1
  6. Windowed Mode: Fullscreen, Windowed


For generic troubleshooting of HLK test failures, see Troubleshooting Windows HLK Test Failures.