Getting rid of the default keyring password prompt with KDM


I’ve been trying for quite some time to use KDM with GNOME. The problem is that I always get that annoying prompt asking me for the password to unlock the default keyring. I tried more solutions, mostly involving a changes to different files in /etc/pam.d (hope I didn’t mess anything up). On the internet I found in more places that KDM is supposed to use PAM, but I start to doubt it.
Is there a way I can automatically unlock the default keyring when using KDM? I’m going crazy.

Any help appreciated. Thanks a lot