> wine --version // return wine-8.0 > winecfg // return err:winediag:nodrv_CreateWindow L"Make sure that your X server is running and that $DISPLAY is set correctly."
> DISPLAY=:0 wine winecfg
....
0148:err:winediag:nodrv_CreateWindow Application tried to create a window, but no driver could be loaded.
0148:err:winediag:nodrv_CreateWindow L"Make sure that your X server is running and that $DISPLAY is set correctly."
> who -H
NAME LINE TIME COMMENT
root ttyS0 2023-01-31 10:50
root pts/0 2023-01-31 12:04 (109.151.62.83)
> w
17:07:13 up 6:17, 2 users, load average: 0.12, 0.19, 0.12
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root ttyS0 - 10:50 6:16m 0.09s 0.02s -bash
root pts/0 109.151.62.83 12:04 0.00s 0.04s 0.00s w
Bottom Line
I think there is a bug in Ubuntu 20.04, how do I know?
I've installed Ubuntu 22.04 in VBox , and Wine works just fine (same procedure)
Reading mRemoteNG's documentation, this program does not have standard X11 forwarding support. I don't know how you have to configure mRemoteNG to enable X11 forwarding, but I expect you can find it on the internet.