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[Pedro Villavicencio <pedro@xxxxxxxxxx>]

We are closing this bug report because it lacks the information we need
to investigate the problem, as described in the previous comments.
Please reopen it if you can give us the missing information, and don't
hesitate to submit bug reports in the future. To reopen the bug report
you can click on the current status, under the Status column, and change
the Status back to "New". Thanks again!


** Changed in: gnome-screensaver (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/611874

Title:
  lockup when xrandr changes display

Status in “gnome-screensaver” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: gnome-screensaver

  To reproduce, use two monitors.

  1. Use xrandr to turn 1 ON and 2 OFF
  2. go to screensaver/lock screen
  3. Use xrandr to turn 1 OFF and 2 ON  (i have a udev rule for this, a keyboard shortcut would also work)
  4. The lock dialog can not be seen.  Typing in the password blindly does not help.  Using xrandr to turn 1 ON and 2 OFF again does not change this. Switching to a VT and killing gnome-screensaver is the only way to log in.

  
  This may be a duplicate from another bug, if someone did not realize xrandr interaction was causing the problem.


  my udev rule:

  $ cat /etc/udev/rules.d/98-video.rules

  SUBSYSTEM=="drm", \
  ACTION=="change", \
  DEVNAME=="/dev/dri/card0", \
  RUN+="/usr/local/bin/toggle-display :0"

  and the helper script:

  $ cat /usr/local/bin/toggle-display
  #!/bin/sh

  test -z "$1" || export DISPLAY=$1

  if xrandr|grep "VGA1 connected" 2>&1 >/dev/null; then
      ON=VGA1
      OFF=LVDS1
  else
      ON=LVDS1
      OFF=VGA1
  fi

  xrandr --output $ON --auto --primary --output $OFF --off

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