As non root user: there is no X server active (Alpine Linux)

[Cyanat]

Hello,
Me again trying to install xrdp on Alpine Linux with xfce.
First, note regarding issue #2177 that xrdp-0.9.18.1-r0 is now included in Alpine 3.15 community repository.

Now, my xrdp access is working, as long as I use the root user.
If I try to login with a non root user, I simply have a blue screen during 3min, and get after that an error indicating connection problem, giving up.
Here is my /var/log/xrdp-sesman.log:

[20220414-11:23:38] [INFO ] Socket 8: AF_INET connection received from 127.0.0.1 port 48088
[20220414-11:23:39] [INFO ] Terminal Server Users group is disabled, allowing authentication
[20220414-11:23:39] [INFO ] ++ created session (access granted): username myuser, ip 10.0.0.70:59643 - socket: 12
[20220414-11:23:39] [INFO ] starting Xorg session...
[20220414-11:23:39] [INFO ] Found X server running at /tmp/.xrdp/xrdp_display_10
[20220414-11:23:39] [INFO ] Starting session: session_pid 11985, display :11.0, width 1920, height 1080, bpp 24, client ip 10.0.0.70:59643 - socket: 12, user name myuser
[20220414-11:23:39] [INFO ] [session start] (display 11): calling auth_start_session from pid 11985
[20220414-11:23:39] [ERROR] sesman_data_in: scp_process_msg failed
[20220414-11:23:39] [ERROR] sesman_main_loop: trans_check_wait_objs failed, removing trans
[20220414-11:23:39] [INFO ] Starting X server on display 11: Xorg :11 -auth .Xauthority -config xrdp/xorg.conf -noreset -nolisten tcp -logfile .xorgxrdp.%s.log
[20220414-11:23:48] [WARN ] Timed out waiting for X server on display 11 to startup
[20220414-11:23:48] [INFO ] Session started successfully for user myuser on display 11
[20220414-11:23:48] [INFO ] Starting the xrdp channel server for display 11
[20220414-11:23:48] [INFO ] Session in progress on display 11, waiting until the window manager (pid 11986) exits to end the session
[20220414-11:23:49] [WARN ] Timed out waiting for X server on display 11 to startup
[20220414-11:23:49] [ERROR] There is no X server active on display 11
[20220414-11:23:49] [ERROR] A fatal error has occured attempting to start the window manager on display 11, aborting connection
[20220414-11:23:49] [WARN ] Window manager (pid 11986, display 11) exited quickly (1 secs). This could indicate a window manager config problem
[20220414-11:23:49] [INFO ] Calling auth_stop_session and auth_end from pid 11985
[20220414-11:23:49] [INFO ] Terminating X server (pid 11987) on display 11
[20220414-11:23:49] [INFO ] Terminating the xrdp channel server (pid 12006) on display 11
[20220414-11:23:49] [INFO ] X server on display 11 (pid 11987) returned exit code 1 and signal number 0
[20220414-11:23:49] [INFO ] xrdp channel server for display 11 (pid 12006) exit code 0 and signal number 0
[20220414-11:23:49] [INFO ] cleanup_sockets:
[20220414-11:23:49] [INFO ] ++ terminated session:  username myuser, display :11.0, session_pid 11985, ip 10.0.0.70:59643 - socket: 12

What could be the problem? Do I have to provide specific rights to myuser? Also, I don't have .xorgxrdp.11.log in /home/myuser

[matt335672]

It's probably your invocation of Xorg which is failing as a non-root user.

See #2208 for a similar problem. You have to specify the path for the Xorg executable or it will run the wrapper instead. I can't tell you the path for your system off the top of my head, but if the symptoms for #2208 are the same as yours, the command cat $(which Xorg) will give you a clue.

[Cyanat]

Many thanks,
Indeed, in my /etc/xrdp/sesman.ini had to replace param=Xorg with param=/usr/libexec/Xorg and it's ok