Screen shading cannot be controlled

[Brian]

Just installed 9.0.188 on my Mac Mini M1 as server, client is a MacBook Pro, both running MacOs 15.3.1.

As soon as I connect, the screen shades to dark blue and goes black. Cannot change the behavior by choosing different security selections in the screen blanking section of the server security menu.

Is anyone else experiencing this?

Happens on MacOs to MacOs connections, does not occur on iOS to MacOs connections.

Brian

[Brian]

I’ve also added a link to screencast where I’ve placed a brief 17 second video that shows what is happening on my client side connection on the MBP as well as a snip of the security settings on the MacMini M1 server.

See video here:

Attachments:

1. 

   Screenshot-2025-05-25-at-10.37.52.png
   

[Britgirl]

Can you first try disabling hardware encoding on the server-side? Go to server settings -> server performance -> uncheck “Use hardware encoding”, then connect.

If that doesn’t help, try disabling HW decoding on the client side and then connect. To do that, open the NoMachine menu panel inside the session by Ctrl+Alt+0 or click on the page peel at the top right corner of the window. Then click on Display -> Change settings. In that panel click on the Modify button to open the advanced display settings. Click on ‘Disable client side hardware decoding’ to disable it.

Do either of those help?

[Brian]

No it does not help by implementing the suggested settings on either the server or the client. I’m also having issues I’ve never had before with the server being unresponsive to the keystrokes from the client, i.e., I cannot enter in my MacOS password on the remote server lock screen; characters will not appear in the password entry field when keys are depressed. Restarts and close and reopens do not remedy this issue. Very frustrating after just having gotten version 8 finally working.

[Britgirl]

Can you check permissions are set correcting in the macOS system setting? (System Settings -> Privacy & Security -> Accessibility)

Also tell us if the server is headless.

Logs of the server machine would be useful. Please follow the instructions here: https://kb.nomachine.com/DT08U00298#1.1. You can submit them here or send directly to forum[at]nomachine[dot]com. Make sure to use the topic link or title as the subject of your email. Thanks!

[Author]

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