after kernel-update and other packages from 18.07.2023 the system boots.
The display-manger shows the list of users and without action the Display is
green only (like blue screen of windows).
The whole computer is frozen. No reaktion of <ctrl><alt><delete> , no reaktion
of <ctrl><alt><F1> 

On the same PC a second installation of leap15.5 is installed.
I copied the complete directory  /boot from the 2.system to my work-system.
Now it works, however all private services are removed from
/etc/systemd/system.

vmlinux  is a link to vmlinuz-5.14.21-150500.55.7-default
initrd a link to  initrd-5.14.21-150500.55.7-default

However uname -r showes 5.14.21-150500.53-default
not  5.14.21-150500.55  ????