Ubuntu – unlock login gnome-keyring on i3wm autologin

Problem

This question seems to have been asked a billion times, but I'm still completely unable to unlock my login keyring automatically.

Background

I automatically login, chvt and startx along these lines into i3wm, which then fires up a modified i3lock. I really want my gnome login keyring to automatically unlock when I login (or perhaps when I unlock i3lock), but I haven't been able to successfully implement any of the instructions I've found online.

Findings

The arch wiki has a whole thing about this which I tried but failed to do. I've also looked around at various other questions/answers which have similar instructions to no avail.

One weird thing I noticed is that I am unable to unlock the login keyring via echo $LOGINPASSWORD | gnome-keyring-daemon --unlock. journalctl reports

Jul 07 20:08:16 ERIS gnome-keyring-daemon[26585]: failed to unlock login keyring on startup

when I open up seahorse to unlock it manually it reports that the login password has changed and asks me to input my old password. journalctl reports

Jul 07 20:08:43 ERIS gnome-keyring-daemon[26585]: fixed login keyring password to match login password

upon which i am unable to unlock the keyring again with my password (fortunately I made a backup beforehand).

Extra info

Here are some relevant /etc/pam.d/ files, hopefully nothing sensitive here LOL (removed comments for brevity, order unchanged. Note that I also tried this .xinitrc bit but it didn't do anything). The only thing I manually added were the pam_gnome_keyring.so bits, except for the stuff in /etc/pam.d/i3lock; anything else was already there, either by default or due to some other package.

/etc/pam.d/login

auth       optional   pam_faildelay.so  delay=3000000
auth [success=ok new_authtok_reqd=ok ignore=ignore user_unknown=bad default=die] pam_securetty.so
auth       requisite  pam_nologin.so
session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
session       required   pam_env.so readenv=1
session       required   pam_env.so readenv=1 envfile=/etc/default/locale

@include common-auth
auth       optional   pam_group.so
session    required   pam_limits.so
session    optional   pam_lastlog.so
session    optional   pam_motd.so motd=/run/motd.dynamic
session    optional   pam_motd.so noupdate
session    optional   pam_mail.so standard
session    required     pam_loginuid.so
@include common-account
@include common-session
@include common-password
session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open   
auth optional pam_gnome_keyring.so
session optional pam_gnome_keyring.so auto_start

/etc/pam.d/common-auth

auth    [success=1 default=ignore]  pam_unix.so nullok_secure
auth    requisite           pam_deny.so
auth    required            pam_permit.so

/etc/pam.d/common-account

account [success=1 new_authtok_reqd=done default=ignore]    pam_unix.so 
account requisite           pam_deny.so
account required            pam_permit.so

/etc/pam.d/common-session

session [default=1]         pam_permit.so
session requisite           pam_deny.so
session required            pam_permit.so
session optional            pam_umask.so
session required    pam_unix.so 
session optional    pam_systemd.so 

/etc/pam.d/passwd

@include common-password

/etc/pam.d/common-password

password    [success=1 default=ignore]  pam_unix.so obscure sha512
password    requisite           pam_deny.so
password    required            pam_permit.so
password    optional    pam_gnome_keyring.so 

/etc/pam.d/i3lock

auth required    pam_env.so
auth sufficient  pam_unix.so try_first_pass likeauth nullok
session optional pam_gnome_keyring.so auto_start