No error message when login via GDM fails because no broker is installed

[adombeck]

Steps to reproduce:

1. Ensure authd is installed
2. Ensure authd is configured to use the broker

   cat /etc/authd/brokers.d/authd-msentraid.conf
   [authd]
   name = Microsoft Entra ID
   brand_icon = /snap/authd-msentraid/current/broker_icon.png
   dbus_name = com.ubuntu.authd.MSEntraID
   dbus_object = /com/ubuntu/authd/MSEntraID
   

3. Ensure authd-msentraid is not installed

   sudo snap remove authd-msentraid
   

4. Try to log in via the Microsoft Entra ID in GDM
5. Observe how the login fails without any user-visible error message

authd version

authd	0.3.7

authd-msentraid broker version

name:      authd-msentraid
summary:   MSEntra ID broker for authd
publisher: Canonical**
store-url: https://snapcraft.io/authd-msentraid
license:   GPL-3.0-only
description: |
  This is the MS Entra ID broker snap for authd  to provide MS Entra ID OIDC
  based authentication on Ubuntu with authd.
snap-id: vS3oJLMss6lgWwoFcPqYDUA2HB20I1Dc
channels:
  0.x/stable:    0.1+267a15c.f272cc1 2024-12-10 (89) 18MB -
  0.x/candidate: ^                                        
  0.x/beta:      ^                                        
  0.x/edge:      0.1+548e9e1.d4248d8 2024-12-10 (91) 18MB -

gnome-shell version

gnome-shell:
  Installed: 46.3.1-1ubuntu1~24.04.1authd4
  Candidate: 46.3.1-1ubuntu1~24.04.1authd4
  Version table:
 *** 46.3.1-1ubuntu1~24.04.1authd4 500
        500 https://ppa.launchpadcontent.net/ubuntu-enterprise-desktop/authd-edge/ubuntu noble/main amd64 Packages
        100 /var/lib/dpkg/status
     46.3.1-1ubuntu1~24.04.1authd2 500
        500 https://ppa.launchpadcontent.net/ubuntu-enterprise-desktop/authd/ubuntu noble/main amd64 Packages
     46.0-0ubuntu6~24.04.5 500
        500 http://de.archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages
     46.0-0ubuntu6~24.04.3 500
        500 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages
     46.0-0ubuntu5 500
        500 http://de.archive.ubuntu.com/ubuntu noble/main amd64 Packages

Distribution

Distributor ID:	Ubuntu
Description:	Ubuntu 24.04.1 LTS
Release:	24.04
Codename:	noble

Logs

[93768.512634] ubuntu systemd[1]: Starting authd.service - Authd daemon service...
[93768.538796] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Verbosity: 2
[93768.538796] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Building authd object
[93768.539306] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Building broker detection
[93768.539741] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Auto-detecting brokers
[93768.539836] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Loading broker from "/etc/authd/brokers.d/msentraid.conf"
[93768.539836] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Dbus broker configuration at "/etc/authd/brokers.d/msentraid.conf"
[93768.539940] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Creating user manager with config: {UIDMin:1000000000 UIDMax:1999999999 GIDMin:1000000000 GIDMax:1999999999}
[93768.543061] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Cleaning up orphaned user records
[93768.545820] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Done cleaning up orphaned user records
[93768.545820] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Building new GRPC NSS service
[93768.545820] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Building new GRPC PAM service
[93768.545820] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Building new daemon
[93768.545820] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Use socket activation
[93768.546684] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Registering GRPC services
[93768.546684] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Starting to serve requests on /run/authd.sock
[93768.546684] ubuntu authd[55400]: 2024/12/13 16:22:56 DEBUG Ready state sent to systemd
[93768.546684] ubuntu authd[55400]: 2024/12/13 16:22:56 INFO Serving GRPC requests on /run/authd.sock
[93768.546808] ubuntu systemd[1]: Started authd.service - Authd daemon service.
[93813.874374] ubuntu systemd[1]: Stopping snap.authd-msentraid.authd-msentraid.service - Service for snap application authd-msentraid.authd-msentraid...
[93813.874952] ubuntu authd-msentraid.authd-msentraid[54919]: time=2024-12-13T16:23:41.480+01:00 level=INFO msg="Stopping daemon requested."
[93813.879428] ubuntu systemd[1]: snap.authd-msentraid.authd-msentraid.service: Deactivated successfully.
[93813.879737] ubuntu systemd[1]: Stopped snap.authd-msentraid.authd-msentraid.service - Service for snap application authd-msentraid.authd-msentraid.
[93814.351075] ubuntu authd[55400]: 2024/12/13 16:23:41 WARN rpc error: code = NotFound desc =
[93814.860767] ubuntu authd[55400]: 2024/12/13 16:23:42 WARN rpc error: code = NotFound desc =
[93831.862045] ubuntu authd[55400]: 2024/12/13 16:23:59 WARN can't start authentication transaction: couldn't connect to broker "Microsoft Entra ID". Is it running?
[93835.966787] ubuntu gdm-authd][56519]: gkr-pam: unlocked login keyring

authd broker configuration

/etc/authd/brokers.d/msentraid.conf

# This section is used by authd to identify and communicate with the broker.
# It should not be edited.
[authd]
name = Microsoft Entra ID
brand_icon = /snap/authd-msentraid/current/broker_icon.png
dbus_name = com.ubuntu.authd.MSEntraID
dbus_object = /com/ubuntu/authd/MSEntraID

authd-msentraid configuration

cat: /var/snap/authd-msentraid/current/broker.conf: No such file or directory

[3v1n0]

Is this happening with the shell from edge channel right?

[adombeck]

Is this happening with the shell from edge channel right?

right. I added the system information and logs to the issue description.