password dialog doesn't appear when screensaver ends

[JR]

Binary package hint: gnome-screensaver

since the upgrade to natty, the password dialog sometimes doesn't appear so I can't unlock my screen.
in that case I only see a blank screen with the mouse cursor. most of the time i switched to some text-console and back to the xserver console and was able to login then. the other times, I hit esc and enter and after a while I the password dialog appeared.
using gnome, not unity.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-screensaver 2.30.2-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Thu May 5 10:37:40 2011
GconfGnomeSession:
 idle_delay = 5
  /desktop/gnome/session/required_components:
   windowmanager = compiz
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-screensaver
UpgradeStatus: Upgraded to natty on 2011-04-29 (5 days ago)
WindowManager: compiz

[Pranesh Prakash (the-solipsist)]

Unlike the OP, I'm using Unity, and this problem affects me.

[Luís Silva (luis)]

I'm also using Unity.

The problem seems a little bit random and I couldn't identify nothing in the logs that justified it...

My GPU is an intel combined with a Nvidia 310m... I blacklisted nouveau at first, but the problem still happens... I'm also not using nvidia closed source driver...

[Antti Kaijanmäki (kaijanmaki)]

Are you using multiple monitors (laptop lcd + external for example)? At least for me the password dialog appears sometimes in "wrong" (detached) display. Also I sometimes have witnessed dialog not being shown on single display setup, but when I enter my password to this non-visible dialog I can still unlock the desktop.

[JR (juergen-richtsfeld)]

no, it's a single monitor, but I only had this once.

Am Mittwoch 27 Juli 2011, 18:24:46 schrieben Sie:
> Are you using multiple monitors (laptop lcd + external for example)? At
> least for me the password dialog appears sometimes in "wrong" (detached)
> display. Also I sometimes have witnessed dialog not being shown on
> single display setup, but when I enter my password to this non-visible
> dialog I can still unlock the desktop.

[Launchpad Janitor (janitor)]

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

[Andreas (andreas-kotowicz)]

I don't see the password dialog if running in dual screen setup.

[Reinhard Tartler (siretart)]

This reads like a duplicate of Bug #712103.

I'm therefore marking it as such, but feel free to undo this if you can explain the differences.