Comment 0 for bug 1471454

On ubuntu-mate wiley amd 64 insatll to the entiere disk. then reboot and get aawy from the keyboard for long enough for the screensaver to activate itself. THen the unbuntu mate logo shows up as the screensaver. move the mouse to get to the unlock screen enter your password and press unlock. The screen will change then go back to to the screensaver and you can try to unlock again.
mate-screensaver:
  Installed: 1.8.1-2
  Candidate: 1.8.1-2
  Version table:
 *** 1.8.1-2 0
        500 http://us.archive.ubuntu.com/ubuntu/ wily/universe amd64 Packages
        100 /var/lib/dpkg/status
Description: Ubuntu Wily Werewolf (development branch)
Release: 15.10

I expected after entering my password to unlock to have the screen unlock. Instead I got taken back to the lock screen until I selected switch user and then logged back into my session in lightdm. Logging in through switch user is a workaround for this problem.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: mate-screensaver 1.8.1-2
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic x86_64
ApportVersion: 2.17.3-0ubuntu4
Architecture: amd64
CurrentDesktop: MATE
Date: Sat Jul 4 11:42:15 2015
InstallationDate: Installed on 2015-07-04 (0 days ago)
InstallationMedia: Ubuntu-MATE 15.10 "Wily Werewolf" - Alpha amd64 (20150704)
SourcePackage: mate-screensaver
UpgradeStatus: No upgrade log present (probably fresh install)