Keyboard mapping error when connecting to RDP session

[Equester]

hello.

I am using Ubuntu 22.04 on a server machine. I installed nomachine to control this computer remotely.

However, when I connect to the server computer via simple remote control, the monitor connected to the server computer is 1280×1024, so it was limited to extend the resolution with xrandr.

So I opened a separate xrdp session in Ubuntu and connected to it with nomachine. I was able to connect at 1920×1080 resolution, but the keyboard behaved strangely. The keyboard arrow keys were all mapped to weird keys, especially the up arrow key, which results in a capture (printscreen).  How can I fix this?

[Britgirl]

Can you show us the output of the ‘setxkbmap -print’ command run inside the xrdp session?

[Equester]

In gdb(local),

xkb_keycodes  { include “evdev+aliases(qwerty)” };

xkb_types     { include “complete” };

xkb_compat    { include “complete” };

xkb_symbols   { include “pc+kr+kr(kr104):2+us:3+inet(evdev)” };

xkb_geometry  { include “pc(pc105)” };

In an XRDP environment,

xkb_keycodes  { include “xfree86+aliases(qwerty)” };

xkb_types     { include “complete” };

xkb_compat    { include “complete” };

xkb_symbols   { include “pc+kr+kr(kr104):2+us:3” };

xkb_geometry  { include “pc(pc104)” };

I attach the image. Thank you.

Attachments:

1. 

   gdb.png
   

2. 

   xrdp.png
   

[fra81]

Hi,

it seems that the X11 agent is not detecting correctly the actual XKB rules settings. In fact, xfree86 rules are used in the xrdp session, which are obsolete, instead of the evdev rules, that are now generally used. We will fix that in one of the next updates, but for now, as a workaround, running this command in the xrdp session should do the trick:

setxkbmap -rules evdev

[Author]

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