NICE DCV Login window defocusing when typing - Linux server

Question

Hi there, 
We are running DCV server with RHEL 9 (specifically Rocky 9) on g5 and g6 instances and are generally happy with the experience.  However, a couple of our users are experiencing an odd issue when connecting to DCV sessions.

When presented with the login window, the DCV client seems to defocus on keypresses when entering the user password. resulting in the need to click on the window with every keypress or with the first keypress. Once the user is in there's no problem.

This doesn't happen with all users, but we have observed a similar experience across a couple of users.

One user, using client version 2023.1.8993.0 on Windows 10 is experiencing the issue on each keypress.
Another using MacOS version 2023.1-6703 experiences only the initial defocus with an initial keypress, but once refocused does not experience the issue.

Wondering if there is a likely configuration issue or something that we are missing or if there is something else we need to ask the user to do on their end.

Giovanni Lauria · Accepted Answer

The issue with the NICE DCV login window defocusing when typing passwords is likely related to window focus management between the DCV client and the underlying X server or display manager running on the Linux server.

You should check the display manager configuration on the Linux server to ensure it is handling focus management properly for remote sessions like DCV.

Trying an alternative display manager or disabling features like "Focus-Stealing Prevention" in the desktop environment or window manager might help. Additionally, using a different window manager or a lightweight one like Openbox or Fluxbox could potentially resolve the issue due to different focus management handling.

Updating the DCV client and server versions to the latest releases is also recommended, as focus management issues may have been resolved in newer versions. Another option is to disable client-side focus management in the DCV client by adding the DCV_DISABLE_CLIENT_FOCUS_MANAGEMENT=1 line to the dcv.env file on the client machine.

NICE DCV Login window defocusing when typing - Linux server

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