Fingerprint identification not working when system is idle without screen going blank

Bug #1923418 reported by prafulla chandra kota
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
fprintd (Ubuntu)
New
Undecided
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Bug Description

Issue: Fingerprint identification not working when system is idle without screen going blank
Setup
System prerequisite: FP enrolled on system, Identify works fine.
OS: Verified on: 20.04 PPA release.
Steps to reproduce:
• Now lock the user again. Select the User.
• Leave the laptop idle for 30sec, swipe mouse across and don’t allow the system to go for sleep for 30 seconds. Place the enrolled FP on reader post 30 seconds.
• Observe that FP doesn't get detected at login screen.
• Need to enter password to login into user account.
• Note: "Swipe finger" option at login screen is still shown even if FP doesn't get detected
Attached the fprintd debug log.

Events actions are mentioned with this symbol <==> at attached output.

<==> Some timeout is observed and after this Host is releasing the device and Identification is working only after hitting Enter key to start identification process, timeout is not generated from FW and FW is ready to accept the finger swipe.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-09-24 (200 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Package: fprintd 1.90.9-1~ubuntu20.04.1 [origin: LP-PPA-ci-train-ppa-service-4509.1]
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18
Tags: third-party-packages focal
Uname: Linux 5.8.0-44-generic x86_64
UnreportableReason: This is not an official Ubuntu package. Please remove any third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True

Revision history for this message
prafulla chandra kota (prafullakota) wrote :
tags: added: apport-collected focal third-party-packages
description: updated
Revision history for this message
prafulla chandra kota (prafullakota) wrote : Dependencies.txt

apport information

Revision history for this message
prafulla chandra kota (prafullakota) wrote : ProcCpuinfoMinimal.txt

apport information

Revision history for this message
prafulla chandra kota (prafullakota) wrote : ProcEnviron.txt

apport information

Revision history for this message
prafulla chandra kota (prafullakota) wrote :

Another observation: on Login screen 20.04 version: when esc button is pressed, it is not showing swipe your finger option for few esc key press and it is enabled only after some time.

Revision history for this message
prafulla chandra kota (prafullakota) wrote :

Verified on 22.04, issue is still present.

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