This procedure explains how to determine which display mode is running in a XenDesktop 7.x session.

Requirements

Log on with access to a command prompt 
 
 Background
XenDesktop 7.x offers a few display mode options:

• DCR (Desktop Composition Redirection)
• H.264 / H.264 Compatibility Mode
• Legacy Graphics Mode

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Instructions

Procedure 1 – Using Windows Management Instrumentation Command(WMIC)

1. Connect to VDA.
2. Launch a command prompt.
3. Depending on the display mode you would like to test, enter related query in the following matrix and check the output value:

Display Mode	Query	Value to Check
DCR	wmic /namespace:\oot\citrix\hdx path citrix_virtualchannel_d3d get /value	IsActive=Active Policy_AeroRedirection=TRUE
H.264	wmic /namespace:\oot\citrix\hdx path citrix_virtualchannel_thinwire get /value	Component_Encoder=DeepCompressionV2Encoder IsActive=Active
H.264 Compatibility Mode	wmic /namespace:\oot\citrix\hdx path citrix_virtualchannel_thinwire get /value	Component_Encoder=CompatibilityEncoder IsActive=Active
Legacy Graphics	wmic /namespace:\oot\citrix\hdx path citrix_virtualchannel_graphics get /value	IsActive=Active Policy_LegacyGraphicsMode=TRUE

Procedure 2 – Using HDX Monitor

1. Launch HDX Monitor, select a target and click Open.

2. Click on any icon to access detailed view.
3. Depending on the display mode you would like to test, check the WMI output of the following sections:

• Graphics – D3D : DCR

• Graphics – ThinWire Advanced : H264 / H264 Compatibility Mode

• Graphics – ThinWire : Legacy Graphics Mode