LightDM crashes and logs me out when resuming from suspend

Bug #1848616 reported by Douglas Silva on 2019-10-18
This bug affects 1 person
Affects Status Importance Assigned to Milestone
lightdm (Ubuntu)

Bug Description

I close the laptop lid and let it suspend. On resume, the whole desktop is frozen for a while. Nothing works during this time, no CAPS LOCK indicator LED, neither TTY switching. Then the screen goes dark and I see the LightDM login screen. I was logged out.

This is a regression, since it wasn't reproducible on Ubuntu 19.04.

How reproducible?
100% of the time.

I am not totally sure it was LightDM's fault. It is my best guess based on the behavior I witnessed.

See logs.

Potentially relevant specs:
- Intel HD Graphics 400 (Braswell)

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: lightdm 1.30.0-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Oct 17 21:52:19 2019
InstallationDate: Installed on 2019-10-17 (0 days ago)
InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)

Douglas Silva (o-alquimista) wrote :
description: updated
Launchpad Janitor (janitor) wrote :

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

Changed in lightdm (Ubuntu):
status: New → Confirmed
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