Resuming from standby/hibernate, screen is blank until key is pressed

[Matt Perry]

Binary package hint: pm-utils

Using release: Ubuntu 9.10

When resuming from suspend or hibernate, the screen remains blank until a key is pressed or the mouse is moved. There is no indication to the end-user that the system to ready for them to continue.

Steps to reproduce:
1. Suspend or hibernate
2. Resume from suspension or hibernation

Actual Result:
Once the system has resumed, the screen remains blank.

Expected result:
The unlock screen should display so that the user knows the system is ready for them to use.

[Chow Loong Jin (hyperair)]

Confirming. And this is gnome-power-manager's territory.

[Chow Loong Jin (hyperair)]

I've narrowed down the issue to indicator-session and every other manual method
of suspending/hibernating that does not use the sleep hotkey bypassing
gnome-power-manager when suspending or hibernating the system, since they all
now talk to DeviceKit-Power directly.

As Chris Coulson mentioned in IRC, what's needed is for DeviceKit-Power to
provide signal hooks for entering/exiting sleep/hibernate state, so that
gnome-screensaver and network-manager among other applications can hook onto
these signals and perform anything necessary (in gnome-screensaver's case,
locking the screen for suspend and showing the dialog upon resume).

From what I can see, this is a summary of what needs to be done is order:
* devkit-power needs to grow support for the required signals
* gnome-screensaver needs to hook onto these signals once they have been added
* gnome-power-manager and every other rdep of devkit-power that plays around
with the screensaver needs to be amended to drop the repeated code.

  affects ubuntu/devicekit-power
  status confirmed
  affects ubuntu/gnome-screensaver
  status confirmed
  affects ubuntu/indicator-session
  status confirmed

--
Kind regards,
Chow Loong Jin (GPG: 0x8F02A411)
Ubuntu Contributing Developer

[quirks (quirks)]

Until this is fixed, you might want to use this workaround that I scripted quickly: create a file /etc/pm/sleep.d/90-gnome-screensaver.sh with the following content:

--- snip ---

#!/bin/sh

. /usr/share/acpi-support/power-funcs

case "$1" in
 thaw)
  # now, we should poke xscreensaver so you get a dialog
  if pidof gnome-screensaver > /dev/null; then
      for x in /tmp/.X11-unix/*; do
   displaynum=`echo $x | sed s#/tmp/.X11-unix/X##`
   getXuser;
   if [ x"$XAUTHORITY" != x"" ]; then
       export DISPLAY=":$displaynum"
       su $user -c "(gnome-screensaver-command --poke)"
   fi
      done
  fi
 ;;
 *)
 ;;
esac

--- snip ---

Then, make the script executable: chmod a+x /etc/pm/sleep.d/90-gnome-screensaver.sh

The script is largely based on a script that was included for xscreensaver in hardy. I just adapted it for gnome-screensaver.

[Charles Kerr (charlesk)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Ubuntu since that time you reported the bug and your problem may have been fixed with some of the updates

I'm not able to reproduce this issue when testing in 14.04 -- when resuming from sleep, I see the new unity lockscreen before any keypress, mouse motion, or mouse click.

It would help us a lot if you could test it on a currently supported Ubuntu version. When you test it and it is still an issue, kindly upload the updated logs by running apport-collect <bug #> and any other logs that are relevant for this particular issue.

[Launchpad Janitor (janitor)]

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

[Launchpad Janitor (janitor)]

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

[Launchpad Janitor (janitor)]

[Expired for gnome-power-manager (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

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