Screen locks even though Screen Lock turned off

[John Rose]

New install of 18.04. Screen locks in a few minutes even though Screen Lock turned off in privacy tab of settings. I've tried setting Blank Screen to 15 minutes(in Power) but makes no difference.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: compiz (not installed)
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Sun Aug 19 18:10:43 2018
InstallationDate: Installed on 2018-07-30 (20 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)

[John Rose (johnaaronrose)]

This also applies to my other 2 computers which have had upgrades from 16.04 to 18.04.

[Khurshid Alam (khurshid-alam)]

I can't reproduce this on cosmic with Unity. Upgrade is not a safe option. Try with fresh install. Beside screen locking is gnome-screensaver/systemd/settings-daemon thing. Not sure what compiz has to do with it.

[John Rose (johnaaronrose)]

This occurs on both a new install of Bionic and upgrades from Xenial to Bionic. All PCs use SSD but that may be irrelevant. It seems to be improving with upgrades of SSD packages. Which package would be causing the problem? I have no intention of doing clean installs as it involves a lot of work in subsequent configuration. Any quality OS should allow upgrading rather than having to do a clean install. All PCs now use Gnome rather than Unity.

[Khurshid Alam (khurshid-alam)]

Ok you are using gnime-shell. Gnome shell doesn't use unity. Try relegating this bug to gnome-settings-daemon or gdm or gnome-shell.