XenApp UNIX Error : Latency Issue with Published Application or Desktops from XenApp for UNIX through Citrix Receiver
Article ID: CTX138497
Updated On:
Description
This article is intended for Citrix administrators and technical teams only.
Non-admin users must contact their company's Help Desk/IT support team and can refer to CTX297149 for more information.
While using Citrix Receiver 3.x to access published application from Citrix XenApp for UNIX, users experience a noticeable lag (latency) in the ICA session. The issue only occurs when connecting to a Citrix XenApp for UNIX farm infrastructure.
Environment
Resolution
To resolve this issue, DeferredUpdateMode feature of the Citrix Receiver must be turned off.
Caution! Refer to the Disclaimer at the end of this article before using Registry Editor.Perform the following registry change on the client machine.
For Windows x86_64
Key Name: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Seamless Windows
Name: DeferredUpdateMode
Type: REG_SZ
Data: False
For Windows x86
Key Name: HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Seamless Windows
Name: DeferredUpdateMode
Type: REG_SZ
Data: False
Problem Cause
Citrix Receiver used a screen update feature to refresh the screen view of the published desktop or published application for seamless use.
This is mainly used to improve the refresh screen repaint issues sometimes found on poor refresh rate system. The same feature sense is used for Windows causing a conflict on the repaint or refresh for showing published application or desktop from a UNIX server sense. These are made entirely different compared to Microsoft Windows.The repaint/refresh gets low and seems that there is a bad performance on server side, but in reality Citrix Receiver is taking a long time repainting the screen for the user.
Issue/Introduction
Additional Information
