port-amd64/57236: Gude, 9.8, https://netbsd.org/docs/guide/en/chap-x.html#chap-x-xdm is wrong

[m.kozlowski%mini.pw.edu.pl@localhost]

>Number:         57236
>Category:       port-amd64
>Synopsis:       Gude, 9.8, https://netbsd.org/docs/guide/en/chap-x.html#chap-x-xdm is wrong
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 17 20:35:00 +0000 2023
>Originator:     Marek
>Release:        9.3 amd64
>Organization:
>Environment:
NetBSD t400net 9.3 NetBSD 9.3 (GENERIC) #0: Thu Aug  4 15:30:37 UTC 2022  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

>Description:
>From a terminal startxfce4 works fine. However I'm unable to login with xdm. The message is:

$ cat .xsession-errors 
/usr/pkg/bin/startxfce4: X server already running on display :0
XDM authorization key matches an existing client!xfce4-session: Cannot open display: .
Type 'xfce4-session --help' for usage.
xterm: fatal IO error 35 (Resource temporarily unavailable) or KillClient on X server ":0"

>How-To-Repeat:
Follow the chapters 9.7 and 9.8 of the Guide
>Fix: