Screensaver doesn't display properly and lock when on battery

[Leo]

This problem appears approximately 2 days ago. I'm not sure it's directly related to this package (that doesn't seem to have been updated) or to this update:

Upgrade: ubuntu-mate-desktop:amd64 (1.148, 1.149), ubuntu-mate-core:amd64 (1.148, 1.149)

When my laptop is on AC, the screensaver launch after the delay, it displays the correct "pictures" and if I touch a device, as expected it asks me for a password to unlock.

If I unplug my laptop, after the delay, the screen fades out, and then immediately "wake up" again.

The screen power saving values (DPMS) are set higher than the screensaver so it should not be related.

In screen.txt I have captured mate-screensaver --debug (my timeout is 1 minute).

I have the same issue if I create a new user with a default mate desktop configuration.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: mate-screensaver 1.12.0-1
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CurrentDesktop: MATE
Date: Fri Apr 1 14:51:46 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-03-25 (6 days ago)
InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323.1)
SourcePackage: mate-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Norbert (nrbrtx)]

Can you reproduce this bug with newer version of Ubuntu MATE?

[Launchpad Janitor (janitor)]

[Expired for mate-screensaver (Ubuntu) because there has been no activity for 60 days.]