I'm running these versions, I have recomplied both recently to see if it helped but it didn't. gdm-2.4.0.11 pam-0.75-r8 And for any username I get "authorization failed" even before I'm asked for the password. This is what the log says: Oct 22 12:44:44 [gdm] PAM unable to dlopen(/lib/security/pam_env.so) Oct 22 12:44:44 [gdm] PAM [dlerror: /lib/security/pam_env.so: undefined symbol: pam_get_item] Oct 22 12:44:44 [gdm] PAM adding faulty module: /lib/security/pam_env.so Oct 22 12:44:44 [gdm] PAM unable to dlopen(/lib/security/pam_nologin.so) Oct 22 12:44:44 [gdm] PAM [dlerror: /lib/security/pam_nologin.so: undefined symbol: pam_get_item] Oct 22 12:44:44 [gdm] PAM adding faulty module: /lib/security/pam_nologin.so Oct 22 12:44:44 [gdm] PAM unable to dlopen(/lib/security/pam_permit.so) Oct 22 12:44:44 [gdm] PAM [dlerror: /lib/security/pam_permit.so: undefined symbol: pam_set_item] Oct 22 12:44:44 [gdm] PAM adding faulty module: /lib/security/pam_permit.so Oct 22 12:44:44 [gdm] PAM unable to dlopen(/lib/security/pam_stack.so) Oct 22 12:44:44 [gdm] PAM [dlerror: /lib/security/pam_stack.so: undefined symbol: _pam_make_env] Oct 22 12:44:44 [gdm] PAM adding faulty module: /lib/security/pam_stack.so Oct 22 12:44:44 [gdm] PAM unable to dlopen(/lib/security/pam_console.so) Oct 22 12:44:44 [gdm] PAM [dlerror: /lib/security/pam_console.so: undefined symbol: pam_get_item] Oct 22 12:44:44 [gdm] PAM adding faulty module: /lib/security/pam_console.so Oct 22 12:44:44 [gdm] Couldn't authenticate user
*** This bug has been marked as a duplicate of 9477 ***