Fingerprint authentication doesn't work after suspend

[Olexii]

On Thinkpad t15 gen2 fingerprint reader works on lock screen if locked manually, but doesn't work when system resumes from sleep. It doesn't matter if system was suspended after a period of inactivity or manually.

According to logs, fprintd seems to be launched, but gnome-shell switches to password authentication.

I've seen this issue several times on Ubuntu 23.10 but on Ubuntu 24.04 it reproduces every time. May be some timing issues or race conditions, i don't know...

тра 25 10:09:41 laptop dbus-daemon[721]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.78' (uid=1000 pid=1778 comm="/u>
тра 25 10:09:41 laptop systemd[1]: Starting man-db.service - Daily man-db regeneration...
тра 25 10:09:41 laptop systemd[1]: Starting fprintd.service - Fingerprint Authentication Daemon...
тра 25 10:09:41 laptop kernel: psmouse serio1: synaptics: queried max coordinates: x [..5678], y [..4694]
тра 25 10:09:41 laptop kernel: PM: suspend exit
тра 25 10:09:41 laptop systemd-sleep[54799]: System returned from sleep operation 'suspend'.
тра 25 10:09:41 laptop bluetoothd[720]: Controller resume with wake event 0x0
тра 25 10:09:41 laptop fprintd[54916]: Failed to install a sleep delay inhibitor: GDBus.Error:org.freedesktop.login1.OperationInProgress: The operation inhibition has been requested f>
тра 25 10:09:41 laptop dbus-daemon[721]: [system] Successfully activated service 'net.reactivated.Fprint'
тра 25 10:09:41 laptop systemd[1]: Started fprintd.service - Fingerprint Authentication Daemon.
тра 25 10:09:41 laptop gnome-shell[1778]: no authentication service is enabled, using password authentication

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: fprintd 1.94.3-1
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat May 25 10:34:19 2024
InstallationDate: Installed on 2024-05-24 (1 days ago)
InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
ProcEnviron:
 LANG=uk_UA.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: fprintd
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Matthew (gromituk)]

Thank you, Olexii - seeing the same behaviour on a ThinkPad X1 Yoga Gen6.