x11 test application fails on this DT although HDMI video output works

[acostach]

 main  X.Org X Server 1.19.2
 main  Release Date: 2017-03-02
 main  X Protocol Version 11, Revision 0
 main  Build Operating System: Linux 4.19.0-13-arm64 aarch64 Debian
 main  Current Operating System: Linux 4ad47df 5.15.32 #1 SMP PREEMPT Tue Jun 7 02:34:46 UTC 2022 aarch64
 main  Kernel command line: console=ttymxc1,115200 console=tty1 root=UUID=2f72f56c-bf8a-4292-9a46-d93466417b17 console=null quiet splash vt.global_cursor_default=0 consoleblank=0
 main  Build Date: 09 December 2020  10:08:00AM
 main  xorg-server 2:1.19.2-1+deb9u7 (https://www.debian.org/support) 
 main  Current version of pixman: 0.34.0
 main   Before reporting problems, check http://wiki.x.org
 main   to make sure that you have the latest version.
 main  Markers: (--) probed, (**) from config file, (==) default setting,
 main   (++) from command line, (!!) notice, (II) informational,
 main   (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
 main  (==) Log file: "/var/log/Xorg.0.log", Time: Wed Mar  1 12:00:05 2023
 main  (==) Using system config directory "/usr/share/X11/xorg.conf.d"
 main  (EE) 
 main  Fatal server error:
 main  (EE) no screens found(EE) 
 main  (EE) 
 main  Please consult the The X.Org Foundation support 
 main    at http://wiki.x.org
 main   for help. 
 main  (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
 main  (EE) 
 main  (EE) Server terminated with error (1). Closing log file