Red Hat Bugzilla – Bug 229639
gnome-screensaver blank screensaver could tell g-p-m to power off monitor right away to save power
Last modified: 2015-01-14 18:20:02 EST
Description of problem:
When using the "blank" screensaver I am missing an option to tell g-s to set the
monitor to power save while the screensaver is running.
The power management options in g-s just offers me a global setting for this,
which is not what I want. I do not want the monitor to switch off in general
after X minutes, I just want it to switch off when the screen saver runs (please
note that setting the "activate screensaver" and "disable display" timeout to
the same value does not help me, as there may be a program running (media
player, for example) that disables the screensaver temporarily, and I do not
want the power save module to change the display state then.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Select "blank" screen saver
2. Wait for activation
Screen goes blank, but display stays active (backlight on a laptop, for example)
screen goes blank and display is disabled (optionally)
So to be clear, this request is asking that the "blank screen" screensaver
should force a dpms off of the monitor?
Configurable, but basically yes.
Maybe for screensavers in general (enable screensaver after x minutes, power off
monitor after x+y)
This would be a nice feature. I support this.
but I don't think it should be configureable blank screen = display off there is
no point in just displaying a black image and wasting power.
My recollection is that in g-p-m the zero value for the dpms timeout (in
minutes) was special cased. And meant "never" or something...
Likewise, can we make it so when the screen powers off (dpms, under OS control)
the screen saver stops or switches to blank screen? What's the point of having
the crazy CPU-eating screen savers on after the screen power goes off?
Or does it already do that? I guess the only way to tell is to ssh in from
another box. I do believe last time I checked the screensaver keeps running.
Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
I searched around and this is the closed BUG I could find to what I'm observing. I also use the blank screensaver. I also configure power management to turn off display shortly after the blank screensaver kicks in. The problem is that the power management time setting seems to not be carried across reboots or login sessions. The value of the power off display setting is carried, but the action of the screensaver isn't done unless I explicitly and manually set the power display off time each time I login. Then the screensaver will turn the display off at the requested time. If I logout and login back in, the screensaver forgets it is supposed to power off the display at the requested time.
This has been true from FC8 and now in FC9.
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I think that in general this is an interesting feature, I think someone should update the version of this bug report to Fedora 11 or Rawhide. Is there any technical reason for not doing this?
(In reply to comment #10)
> I think that in general this is an interesting feature, I think someone should
> update the version of this bug report to Fedora 11 or Rawhide. Is there any
> technical reason for not doing this?
Its already implemented. It just does not power off the display immediately because some displays need some time to return from DPMS.
(In reply to comment #11)
> Its already implemented. It just does not power off the display immediately
> because some displays need some time to return from DPMS.
I don't understand --- surely that would delay powering them back on?
Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.
If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version.
Thank you for reporting this bug and we are sorry it could not be fixed.