i install pam-kwallet packet
then
i restart opensuse
then
i open a kde session
then
kwallet asks for me the password to open kwallet!


i open /ect/pam.d/sddm file

contents are:

#%PAM-1.0
auth     include        common-auth
account  include        common-account
password include        common-password
session  required       pam_loginuid.so
session  include        common-session

it must be:

#%PAM-1.0
auth     include        common-auth
-auth            optional        pam_kwallet5.so
account  include        common-account
password include        common-password
session  required       pam_loginuid.so
session  include        common-session
-session         optional        pam_kwallet5.so auto_start

after adding the statements

-auth            optional        pam_kwallet5.so
-session         optional        pam_kwallet5.so auto_start

there is no more pb

note: you can't use this feature if you choose to use gpg key to crypt wallet
file

you can only use this feature if:
- you choose "blowfish" method when creating wallet file
- the name of the wallet must be kwallet

i use this tuto
https://wiki.archlinux.org/index.php/KDE_Wallet