Arch Linux

two_penguins

Member

Registered: 2019-12-29

Posts: 13

U2F and GDM login

Hello,

following this https://wiki.archlinux.org/index.php/U2F and that https://wiki.archlinux.org/index.php/YubiKey guide I successfully managed to set up my Yubikey for luks and sudo. However, when it comes to the GDM login, which I also set up following the steps in the 1st article, it doesn't work.

I cannot login, neither with just the password nor pushing the button on the Yubikey nor typing the challenge password (which I use for luks). The logs are the following:

Okt 23 14:12:14 computer gdm-password][2222]: pam_unix(gdm-password:auth): authentication failure; logname= uid=0 euid=0 tty=/dev/tty1 ruser= rhost=  user=frank
Okt 23 14:12:14 computer gdm-password][2222]: pam_systemd_home(gdm-password:auth): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
Okt 23 14:12:22 computer gdm-password][2226]: pam_unix(gdm-password:auth): authentication failure; logname= uid=0 euid=0 tty=/dev/tty1 ruser= rhost=  user=frank
Okt 23 14:12:22 computer gdm-password][2226]: pam_systemd_home(gdm-password:auth): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
Okt 23 14:12:51 computer gdm-password][2250]: gkr-pam: unable to locate daemon control file
Okt 23 14:12:51 computer gdm-password][2250]: gkr-pam: stashed password to try later in open session
Okt 23 14:12:51 computer gdm-password][2250]: pam_systemd_home(gdm-password:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
Okt 23 14:12:51 computer gdm-password][2250]: pam_unix(gdm-password:session): session opened for user frank(uid=1000) by (uid=0)
Okt 23 14:12:51 computer gdm-password][2250]: gkr-pam: gnome-keyring-daemon started properly and unlocked keyring
Okt 23 14:12:53 computer polkitd[1089]: Registered Authentication Agent for unix-session:8 (system bus name :1.134 [/usr/bin/gnome-shell], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale de_DE.utf8)
Okt 23 14:12:54 computer polkitd[1089]: Unregistered Authentication Agent for unix-session:6 (system bus name :1.110, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale de_DE.UTF-8) (disconnected from bus)
Okt 23 14:13:05 computer systemd[2031]: pam_warn(systemd-user:setcred): function=[pam_sm_setcred] flags=0x8004 service=[systemd-user] terminal=[] user=[gdm] ruser=[<unknown>] rhost=[<unknown>]
Okt 23 14:13:10 computer sudo[2754]: pam_systemd_home(sudo:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.

It seems, that somehow systemd-homed is pulled. I'm not using it (at least not intentionally).

Maybe I should mention, that I edited one line in /etc/ykfde.conf from "0" to "1":

# Use 'Manual mode with secret challenge (2FA)'.
YKFDE_CHALLENGE_PASSWORD_NEEDED="1"

Any ideas?