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[Launchpad Bug Tracker <578979@xxxxxxxxxxxxxxxxxx>]

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

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/578979

Title:
  blank screen after fast-user switch

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: gnome-screensaver

  This may be a duplicate of https://bugs.launchpad.net/bugs/112518 
  But it's happening with ubuntu 10.04.
  Here's the description.

  Log with user A via gdm.
  Set the screensaver to 1min (blank screen or whatever).
  fast-switch to user B.
  wait more than 1 min.
  Fast-switch to user A.

  => the screen is blank, no message from gnome-screensaver to unlock. There's only the mouse pointer.
  I can still switch to console with ALT-Fx, but the screen is blank (I have to type blinded).
  If I restart gdm, the screen is back.

  When this happened, I could see via ssh that the gnome-screensaver
  process of user A launched gnome-screensaver-dialog process with
  argument --enable-switch and --status-message=

  I uninstalled gnome-screensaver, made sure its processes were not running and try this:
  Log with user A via gdm.
  Set the power-manager to switch off the screen after 1 min.
  fast-switch to user B.
  wait more than 1 min.
  Fast-switch to user A.
  And the screen was OK.

  my video card is ATI Technologies Inc RV710 [Radeon HD 4350]
  and I'm using KMS (default lucid configuration).
  I'm not using compiz or anything related to visual effects.

  package: gnome-screensaver 2.30.0-0ubuntu1

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