18.10 fails to Lock Session

Asked by Artur Kerge on 2018-10-26

After upgrading from 18.04 to 18.10, computer suspends but locking session fails and a flickering menu remains. For a workaround I have to disconnect any external displays, if any, close laptop lid and reopen. Only then the login screen appears. Locking via keyboard (Super+L) works as it should (session gets locked on all monitors).

% gsettings get org.gnome.desktop.screensaver ubuntu-lock-on-suspend

% wmctrl -m
Name: GNOME Shell
Class: N/A
Window manager's "showing the desktop" mode: OFF

% lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.10
Release: 18.10
Codename: cosmic

% uname -a
Linux pingu 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:13:55 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Related to Bug #1798615 and

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If there is a bug reported then post on that. You don't need a question as well.

Artur Kerge (krvl) said : #2

Sorry, that was my bad. Tried to link to question and failed to click on the linked bug link. Noobie to Launchpad. Question can be deleted or marked as duplicate.

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