HDX™ Insight

Last published : Oct 15, 2026
Related information
Administration

Overview

The Linux VDA partially supports the HDX Insight feature.

Installation

No dependent packages need installation.

Usage

HDX Insight analyzes the ICA® messages passed through the Citrix ADC between Citrix Workspace™ app and the Linux VDA. All HDX Insight data is sourced from the NSAP virtual channel and sent uncompressed. The NSAP virtual channel is enabled by default.
The following commands disable and enable the NSAP virtual channel, respectively:
sudo /opt/Citrix/VDA/bin/ctxreg create -k "HKLM\Software\Citrix\VirtualDesktopAgent" -t "REG_DWORD" -v "EnableNSAP" -d "0x00000000" --force
sudo /opt/Citrix/VDA/bin/ctxreg create -k "HKLM\Software\Citrix\VirtualDesktopAgent" -t "REG_DWORD" -v "EnableNSAP" -d "0x00000001" --force

Troubleshooting

No data points are displayed

There might be two causes:
  • HDX Insight is not configured correctly.
    For example, AppFlow® is not enabled on the Citrix ADC or an incorrect Citrix ADC instance is configured on the Citrix ADM.
  • The ICA Control Virtual Channel is not started on the Linux VDA.
    ps aux | grep -i ctxctl
    If ctxctl is not running, contact your administrator to report a bug to Citrix.

No application data points are displayed

Verify that the seamless virtual channel is enabled and a seamless application is running.