Dell Wyse ThinOS Version 9.1.4097, 9.1.4234, 9.1.5067, and 9.1.6108 Operating System Release Notes

Citrix Workspace app updates

• Plug-and-play functionality for smart card reader enhancement—ThinOS does not allow to disable smart card plug-and-play through Citrix Configuration Editor by modifying DriverName parameter due to ThinOS security concern. Hence, plug-and-play functionality for smart card reader is always enabled from this release.
• Webcam redirection (HDX RealTime Webcam Video Compression) for 32-bit apps enhancement—Only 32-bit apps on the virtual desktop with HDX RealTime Webcam Video Compression are supported by ThinOS. Dell Technologies only qualified this feature using Citrix Workspace App 2109 package. With this feature, you can customize the camera resolution and frames per second from System Setup > Peripherals > Camera. You can also customize this feature using Admin Policy Tool or Wyse Management Suite policy settings. HDX RealTime Webcam Video Compression is compatible with most unified communications clients. The feature has been tested for compatibility with Cisco Webex Meetings, Cisco Webex Teams, Cisco Jabber, Microsoft Teams, Skype for Business 365, and Zoom. You can use a 32-bit browser such as Google Chrome or Mozilla Firefox to verify the webcam redirection online. External USB cameras or the integrated camera can be used with HDX RealTime Webcam Video Compression. Webcam bandwidth consumption can vary with webcam models. Different webcams offer different frame rates and resolution. Dell Technologies used the following webcams for initial feature validation:
  • Microsoft LifeCam HD-3000—Highest supported resolution with HDX RealTime Webcam Video Compression is 1920x800.
  • Logitech C920, C922, C930e—Highest supported resolution with HDX RealTime Webcam Video Compression is 1600x896.
  • Wyse 5470 and 5470 All-in-One thin clients with built-in camera.
  For the steps to configure camera settings, see Dell Wyse ThinOS 9.1.4234, 9.1.5067, and 9.1.6108 Administrator's Guide at www.dell.com/support.
  HDX RealTime Webcam Video Compression limitations

  • Camera with hardware encoding is not supported in ThinOS.
  • Since x264 library is not integrated into ThinOS, 64-bit apps with HDX RealTime Webcam Video Compression are not supported by Citrix Workspace App. Hence, only 32-bit apps with HDX RealTime Webcam Video Compression are supported in ThinOS.
  • Citrix Workspace App 2112 with HDX RealTime Webcam Video Compression works only with built-in camera. The issue is also reproduced in Linux Citrix Workspace app binary. Hence, from this ThinOS release, HDX RealTime Webcam Video Compression is only supported with Citrix Workspace app 2109.
  • Sometimes, the updated Camera Width, Camera Height and Camera FPS settings does not sync from Wyse Management Suite to the thin client. You must reboot the client for the changes to take effect.
  • HDX RealTime Webcam Video Compression in ThinOS supports only one webcam at a time. Citrix Workspace Linux binary can update the default webcam by modifying HDXWebCamDevice in $HOME/.ICAClient/wfclient.ini configuration file. For example, add HDXWebCamDevice=/dev/video2 to set the webcam mapped to /dev/video2 in a system. However, ThinOS does not allow to input the value /dev/video2 in VDI Configuration Editor due to security reasons.
  • If client camera is set to 2304x1296 or 2304x1536 video resolution, the HDX webcam redirection cannot be previewed in the session. This limitation is reproduced in CWA 2109 Linux binary as well.
  • If client camera is set to 1920x1080 video resolution, the HDX webcam redirection falls back to 325x288 video resolution in the session. This limitation is reproduced in CWA 2109 Linux binary as well.
  • HDX webcam camera sometimes does not work on WebEx Meeting call. This limitation is reproduced in CWA 2109 Linux binary as well.
  • Zoom application video preview sometimes fails when you use Citrix HDX Webcam. This limitation is reproduced in CWA 2109 Linux binary as well.
  • WebEx application video fails to preview when you use Citrix HDX Webcam. This limitation is reproduced in CWA 2109 Linux binary as well.
  • External USB camera does not work with Citrix HDX Webcam in Citrix Workspace app 2112. Only the built-in camera works. This limitation is reproduced in CWA 2109 Linux binary as well.
• Citrix Workspace app fixed issues
  • Resolved the issue where the cursor color inverting feature does not work after you upgrade or downgrade the Citrix Workspace app package.
    NOTE:You must install ThinOS 9.1.6108 firmware before you install Citrix_Workspace_App_21.12.0.18.3.pkg.
  • Resolved the issue where DriverName in smartcard settings under module.ini is changed from VDSCARDV2.DLL to VDSCARD.DLL.
• Citrix Workspace app limitations
  • Graphics issue while using YouTube with Browser Content Redirection (BCR) enabled.
  • Zoom optimization does not support proxy using nonanonymous authentication.
  • Mouse cursor displays a black block in Citrix HDX 3D desktop.
  • Jabra Evolve 75, Jabra Engage 75, and Jabra PRO 9450 headsets do not support answering and disconnecting calls using headset buttons for RTME, Cisco JVDI, Zoom, Cisco WebEx teams VDI, Cisco WebEx Meeting VDI, and Microsoft Teams. Jabra Engage 75 headset supports RTME.
  • Zoom window displays a shadow when you share screen.