Linux Virtual Delivery Agent

Features in Technical Preview

Features in Technical Preview are available to use in non-production or limited production environments, and to give customers an opportunity to share feedback. Citrix does not accept support cases for features in technical preview but welcomes feedback for improving them. Citrix might act on feedback based on its severity, criticality, and importance.

List of features in Technical Preview

The following table lists the features in Technical Preview, along with their descriptions and the versions in which they first became available.

Technical Preview feature Description Available from version General Availability (GA) version
Token-based enrollment extended to on-premises environments When creating non-domain-joined VDAs using easy install, you can enroll non-domain-joined VDAs with a machine catalog of both cloud and on-premises delivery controllers. You can use the Citrix Web Studio to create an empty machine catalog and generate an enrollment token. For more information, see Create a non-domain-joined Linux VDA using easy install (preview). 2407 N/A
Loss tolerant mode for audio Audio is supported over the Enlightened Data Transport (EDT) loss tolerant protocol. This feature increases the user experience for real-time streaming when users are connecting through networks with high latency and packet loss. When this feature is enabled, Adaptive Transport in Citrix Virtual Apps and Desktops uses the EDT loss tolerant transport protocol for a better audio experience. This feature is disabled by default. For more information, see Loss tolerant mode for audio in the Audio features article. 2407 2411
Audio Quality Enhancer for adaptive audio Starting with version 2411, we have introduced the Audio Quality Enhancer for adaptive audio as a preview feature. This enhancement effectively manages short periods of packet loss and disruptions by intelligently reconstructing audio from previous samples, thus preventing noticeable degradation in quality. Additionally, it adaptively recovers lost audio packets only when necessary. The Audio Quality Enhancer enables and disables itself based on sustained changes in packet loss, optimizing audio playback and recording quality in both good and bad network conditions. For more information, see Audio features. 2411 N/A
Support for multiple audio devices The feature allows multiple audio devices on the client machine where Citrix Workspace app is installed to be redirected to the remote Linux VDA session. With the feature enabled, all local audio devices on the client machine are displayed in a session. Instead of CitrixAudioSink (audio output) or CitrixAudioSource (audio input), the audio devices appear with their respective device names. You can select an audio device in an app in a session or use the default audio device during a session which is also the default audio device of the client machine. If necessary, you can change the default audio device from the system settings of the client machine. After the default audio device of the client machine is updated, the new device appears as the default audio device in the session. Also, audio devices within sessions update dynamically when you plug in or remove one. For more information, see Support for multiple audio devices. 2311 2411
Token-based enrollment The feature lets you enroll non-domain-joined VDAs with a machine catalog and authenticate these VDAs to the Citrix Cloud control plane using a token file. The token-based enrollment is best suited for the use cases where you prepare machines (whether physical or virtual) on your own using non-Citrix provisioning technology. It eliminates the need to install and maintain Cloud Connectors and removes the AD dependency for user and machine authentication, enabling authentication for non-domain-joined machines. For more information, see Create a non-domain-joined Linux VDA using easy install (preview). 2311 N/A
Secure HDX You can encrypt ICA sessions end-to-end between the Citrix Workspace app (client) and the VDA (session host). The end-to-end encryption (E2EE) feature allows no intermediate network elements including the Citrix Gateway to decrypt the ICA traffic. It uplifts the secure posture of your environment and is easy to configure and manage. For more information, see Secure HDX (preview). 2311 N/A
Enhanced EDT congestion control A new congestion control algorithm is introduced to optimize the Enlightened Data Transport (EDT) protocol. This implementation allows EDT to achieve higher throughput and reduce latency for an enhanced user experience. This feature is disabled by default. For more information, see Adaptive transport. 2308 2311
Support for Fast Identity Online (FIDO2) authentication You can now set up FIDO2 authentication to access websites using Google Chrome hosted on the Linux VDA. For more information, see FIDO2 (preview). 2305 N/A
Support for Wayland The Linux VDA supports Wayland in GNOME on RHEL 9.4/9.3/9.2, Rocky Linux 9.4/9.3/9.2, and Ubuntu 22.04. For more information, see Wayland (preview). 2301 N/A
Support for recording Linux sessions You can record and replay sessions hosted on a Linux VDA. For more information, see Session recording (preview). 2212 N/A
Database options You can use SQLite in addition to PostgreSQL. You can specify SQLite or PostgreSQL to use by editing /etc/xdl/db.conf after installing the Linux VDA package. For more information, see the installation articles. 2212 2305
Support for Amazon Linux 2 Amazon Linux 2 is added as a supported distribution. For more information, see System requirements. 2112 2203
HDX screen sharing The Linux VDA lets you share the screen of your virtual desktop with session users on other virtual desktops. The screen sharing feature is disabled by default. For more information, see HDX screen sharing. 2109 2112
Citrix Virtual Channel Software Development Kit (SDK) for the Linux VDA Citrix Virtual Channel SDK for the Linux VDA is available for download at the Citrix Virtual Apps and Desktops download page. Expand the appropriate version of Citrix Virtual Apps and Desktops and click Components to select the Linux VDA download. With the Virtual Channel SDK, you can write server-side applications to run on the VDA. For more information, see the Citrix Virtual Channel SDK for the Linux VDA documentation. 2109 N/A
Support for Ubuntu 20.04 You can install the Linux VDA on Ubuntu 20.04. 2009 2012
Features in Technical Preview