Using TightVNC on ubuntu 22.04. Apps works on the remote but not in viewer.

Hi,

I am using lxde windows manager and this is the xstartup I am using:

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I launch vncserver, and connect from laptop using a vnc viewer. The lxde destop shows correctly, the mouse works fine, etc. But if I try open any gui application, nothing shows. Chrome is the only one I've found so far that opens correctly.

Now, all those applications that are not showing on my laptop are actually shown in the remote pc, the one running vncserver.

In case it helps this is my xstartup file:

#!/bin/sh
# LXDE session
autocutsel -fork
export XKL_XMODMAP_DISABLE=1
exec /usr/bin/lxsession -s L                

Do I have to specify a DISPLAY variable? If so, then why Chrome works fine?

Do you have any suggestions?

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Thank you very much!