Bug 700994

Summary:	"Dim screen to save power" has no effect
Product:	[Fedora] Fedora	Reporter:	Philipp Dörfler <phdoerfler>
Component:	gnome-power-manager	Assignee:	Richard Hughes <richard>
Status:	CLOSED WORKSFORME	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	15	CC:	collura, gordon.messmer, rhughes, richard
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-11-15 13:36:42 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Philipp Dörfler 2011-04-30 10:18:02 UTC

Description of problem:
Setting "Dim screen to save power" in gnome-power-manager has no effect

Version-Release number of selected component (if applicable):
gnome-power-manager-3.0.0-1.fc15.x86_64

How reproducible:
Always reproducible.

Steps to Reproduce:
- Open gnome's system settings in gnome3
- click on "screen"
- check "Dim screen to save power"
- unplug the power cord so the laptop runs on battery
  
Actual results:
The screen's brightness remains unchanged.

Expected results:
The screen should dim to save power.

Additional info:
Opening dconf-editor and manually toggling org.gnome.power-manager.backlight-battery-reduce works as expected. It seems that gnome-power-manager should toggle this setting in dconf, but doesn't.

Comment 1 Richard Hughes 2011-11-15 13:36:42 UTC

This should be fixed in F16, please reopen if that's not the case. Thanks.

Comment 2 Gordon Messmer 2012-03-05 17:10:42 UTC

Since this is one of the top google hits for "gnome dim screen to save power", I wanted to update this entry.

The "Dim screen to save power" option currently sets the dconf value /org/gnome/settings-daemon/plugins/power/idle-dim-battery.  As far as I can tell, there is no setting anywhere in GNOME 3 (in Fedora 16) that will dim the screen when a PC switches from external to battery power.