KDE Wayland no keyboard/mouse input

[jnko]

I’ve successfully managed to get NoMachine running under KDE Wayland—no more white screen. However, I can’t use either the mouse or the keyboard. Unfortunately, nothing happens. Any ideas on how to fix this?

Client and Server: ArchLinux up to date
Kernel: 7.0.12
Nomachine: 9.7.3
KDE Plasma: 6.7
KDE Frameworks: 6.27.0

daemon.log:

Info: Connection from 123.123.100.129 port 33782 process 16409 closed on Mon Jun 22 12:11:39 2026.
Info: Connection from 123.123.100.129 port 55738 accepted on Mon Jun 22 12:11:41 2026.
Info: Connection from 123.123.100.129 port 55738 process 16611 started on Mon Jun 22 12:11:41 2026.
Info: Connection from 123.123.100.129 port 55738 process 16611 closed on Mon Jun 22 12:13:06 2026.

server.log:

COOKIE: /usr/NX/var/tmp/nx/C4628686D85228C73E04B44163A14B10.authority:1:  COOKIE: bad "add" command line
Info: Connection from 123.123.100.129 port 33782 closed on Mon Jun 22 12:11:39 2026.
Info: Handler with pid 16409 terminated on Mon Jun 22 12:11:39 2026.
16409 16409 2026-06-22 12:11:39 670.548 NXSERVER Remote machine '123.123.100.129' disconnected.
16409 16409 2026-06-22 12:11:39 676.061 NXSERVER ERROR! Authentication with 'NX-password' from host '123.123.100.129' failed. Error is 'Username is not in the expected format'.
Info: Handler started with pid 16611 on Mon Jun 22 12:11:41 2026.
Info: Handling connection from 123.123.100.129 port 55738 on Mon Jun 22 12:11:41 2026.
16611 16611 2026-06-22 12:11:42 206.643 NXSERVER Connected from remote machine '123.123.100.129' using protocol 'NX'.
16611 16611 2026-06-22 12:11:42 206.684 NXSERVER Process initialized with arguments '-c /etc/NX/nxserver --login -H 21'.
COOKIE: /usr/NX/var/tmp/nx/FFF10AE360E989FEE782E72C9F2353A4.authority:1:  COOKIE: bad "add" command line
16611 16611 2026-06-22 12:11:45 560.986 NXSERVER User 'l' logged in from '123.123.100.129' using authentication method NX-password.
16611 16626 2026-06-22 12:11:45 568.913 NameEvent/NameEvent: ERROR! Error reply 'ERR Background save already in progress'.
Info: Connection from 123.123.100.129 port 55738 closed on Mon Jun 22 12:11:46 2026.
Info: Handler with pid 16611 terminated on Mon Jun 22 12:11:46 2026.
COOKIE: /usr/NX/var/tmp/nx/8ABD012A5AD219384E9D9F6659C3743D.authority:1:  COOKIE: bad "add" command line
COOKIE: /usr/NX/var/tmp/nx/2310A7EDD65997848D64855FBC79466F.authority:1:  COOKIE: bad "add" command line
16611 16611 2026-06-22 12:13:06 244.247 NXSERVER User 'l' from '123.123.100.129' logged out.
16611 16611 2026-06-22 12:13:06 244.650 NXSERVER Remote machine '123.123.100.129' disconnected.

Attachments:

1. node.cfg_.zip
2. server.cfg_.zip

[Britgirl]

We would need logs from both the client and server side. For server side logs, please follow the instructions here:
https://kb.nomachine.com/DT08U00298#1.1. For the client side player logs, please follow the instructions here: https://kb.nomachine.com/DT08U00298#1.2

Can you tell us if input works after enabling ‘Grab the keyboard/mouse input’ in the session menu? (Ctrl-Alt-0, Input, tick the two boxes Grab the keyboard input and Grab the mouse input). Thanks.

[Author]

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