[Bug 1046118] [NEW] screen powers down after 10 minutes regardless of what Brightness and Lock settings used.

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Ubuntu Foundations Team Bug Bot (crichton):

[IMPACT]
* Regardless of settings in the "Brightness and Lock" Panel, screen will power off after 10mins.

As part of the new lock-screen in gnome-shell 3.6 (when running on gdm),
a watchdog timer, that disables the builtin X screensaver was moved into
gnome-settings-daemon 3.6. Previously this was in gnome-screensaver
however that is no longer used with gnome-shell/gdm combination.

Since Quantal is still using gnome-settings-daemon 3.4, currently we are
missing the watchdog timer for gnome-shell session on gdm.

This is an upstream git patch take from gnome-settings-daemon 3.6.

[Test case]
1. Run gnome-shell from gdm.
2. Set "Turn screen Off" in Brightness/lock panel to Never
3. Wait 10mins and the screen will turn off.

[Workaround]
Install gnome-settings-daemon 3.6 from gnome3-team ppa.

[Regression Potential]
The code in this patch was copied from gnome-screensaver into gnome-settings-daemon, so should not cause any problems. However when running a session that uses gnome-screensaver (Unity, gnome-shell on Lightdm), this watchdog timer will be duplicated. This is probably harmless but it might be best to patch it out gnome-screensaver.

=== Original Bug report ===

Just updated to the latest quantal today and then tried to watch a movie
in Totem. Screen powered off every 10 minutes, reliably. Tried setting
the power save to 'never', or to '1 hour', tried it with auto screen
lock on or off, screen always powers off after 10 minutes exactly.

$ lsb_release -rd
Description:	Ubuntu quantal (development branch)
Release:	12.10

$ apt-cache policy gnome-control-center
gnome-control-center:
  Installed: 1:3.4.2-0ubuntu13
  Candidate: 1:3.4.2-0ubuntu13
  Version table:
 *** 1:3.4.2-0ubuntu13 0
        500 http://ca.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy totem
totem:
  Installed: 3.4.3-0ubuntu2
  Candidate: 3.4.3-0ubuntu2
  Version table:
 *** 3.4.3-0ubuntu2 0
        500 http://ca.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy gnome-screensaver
gnome-screensaver:
  Installed: 3.5.5-0ubuntu1
  Candidate: 3.5.5-0ubuntu1
  Version table:
 *** 3.5.5-0ubuntu1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
        100 /var/lib/dpkg/status

Let me know what other information is needed to troubleshoot this and
I'll gladly help, thanks.

** Affects: gnome-shell
     Importance: Medium
         Status: Fix Released

** Affects: gnome-settings-daemon (Ubuntu)
     Importance: Undecided
         Status: Fix Released

** Affects: gnome-shell (Ubuntu)
     Importance: Low
         Status: Confirmed

** Affects: gnome-settings-daemon (Ubuntu Quantal)
     Importance: Undecided
         Status: New

** Affects: gnome-shell (Ubuntu Quantal)
     Importance: Undecided
         Status: New


** Tags: patch
-- 
screen powers down after 10 minutes regardless of what Brightness and Lock settings used.
https://bugs.launchpad.net/bugs/1046118
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