The newly installed LVDA encountered a login failure. When launching the virtual desktop, the Linux login screen appears, but even after manually entering the correct username and password, the system fails to authenticate and proceed to the desktop environment.

modify the smb.conf file like below:

#template homedir = /home/%U@%D
#template shell = /bin/bash
#idmap confiq backend = tdb
encrypt passwords = yes
idmap config *:range 16777216-33554431
winbind trusted domains only = no
kerberos method = secrets and and keytab
winbind refresh tickets = yes
template shell = /bin/bash
winbind use default domain = yes
#winbind enum groups = по 
#winbind enum users = no

Problem Cause

From the log, it shows that user validation failed because the validator is either null or the validation process did not succeed. This typically indicates a possible issue with the incorrect configuration

2025-05-19 03:08:17.905405 [LOGIN:INFO] <P203890:T7282:S6> citrix-ctxlogin: Start to validate user ...
2025-05-19 03:08:19.302065 [LOGIN_BOX:ERROR] <P203890:T7282:S6> citrix-ctxlogin: Failed to validate user in pam_authenticate:'Authentication failure'
2025-05-19 03:08:19.302085 [LOGIN_BOX:ERROR] <P203890:T7282:S6> citrix-ctxlogin: Failed to validate user: validator is null or validation failed
2025-05-19 03:08:19.303133 [LOGIN:ERROR] <P203890:T7282:S6> citrix-ctxlogin: Failed to validate user . Due to LOGON_FAILURE