Bug#370692:

Roger Leigh rleigh at codelibre.net
Sat Feb 12 11:36:26 UTC 2011


On Sat, Aug 08, 2009 at 11:50:29PM +0100, Steve Fosdick wrote:
> The latest problem with DPMS not being activated as reported in my last
> message only occurs inside GNOME (DPMS activates correctly from the gdm
> login screen) and occurs when gnome-power-manager 2.24.4 is used with:
> 
> gnome-screensaver: 2.26.1-2
> gnome-session:     2.26.2-1
> 
> Upgrading to gnome-power-manager 2.26.3 (from experimental) including
> the packages on which it depends fixes the problem.
> 
> This is the second time a version mismatch of gnome-power-manager with
> other parts of gnome has caused it to stop working so it seems there is
> a missing version dependency (or conflicts).

I've been experiencing this for the last few weeks with the squeeze
versions of gnome-screensaver and gnome-power-manager.  Not a hardware
issue.  The DPMS and screensaver settings reported by "xset q" are
simply not set (at all) by any GNOME component.
  gnome-power-manager 2.32.0
  gnome-screensaver 2.30.0-3

If I don't provide any input, the video signal is dropped after
10 minutes and the monitor goes into standby mode.  However...
the power manager has the monitor set to sleep after 30 minutes,
and the screensaver set with a 25 minute timeout.

The problem lies here:
% xset q
…
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  600    cycle:  600
DPMS (Energy Star):
  Standby: 0    Suspend: 0    Off: 0
  DPMS is Enabled
  Monitor is On
…

Changing any of the preferences above does not have any effect upon
the DPMS settings in the X server.

I compared this with the xscreensaver behaviour.  On its advanced
configuration tab, there are separate standby/suspend/off settings
in the "Display Power Management" section.  After enabling it, I
get this:
% xset q
Screen Saver:
  prefer blanking:  yes    allow exposures:  yes
  timeout:  0    cycle:  0
DPMS (Energy Star):
  Standby: 600    Suspend: 900    Off: 1200
  DPMS is Enabled
  Monitor is On

It looks like either the power manager and/or the screensaver
(probably the power manager, since that's where the setting is)
are failing to set the properties.


Regards,
Roger

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (550, 'unstable'), (400, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.37-trunk-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash


-- 
  .''`.  Roger Leigh
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