xdm with pam_pkcs11

Hi
Sorry for my english.

I have a problem with use xdm, xlock and xscreensaver, which work with 
pam_pkcs11.
xdm does not ask PIN code of smart card, but writes in /var/log/xdm.log 
following message:

sec.c: sc_pin_cmd: returning with PIN code or key incorrect

xlock in combination with pkcs11_eventmgr (in not daemon type of work) does not 
ask PIN code too and writes "PIN code or key incorrect".

It`s appropriate mention here that xdm, xlock and xscreensaver were configured 
with key --with-libpam.
login and gdm works without errors.
                     Regards
                     Aska