** Changed in: oem-priority/precise
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1055874
Title:
Automatic sleep settings are not followed precisely
Status in Gnome Settings Daemon:
Fix Released
Status in OEM Priority Project:
New
Status in OEM Priority Project precise series:
In Progress
Status in “gnome-power-manager” package in Ubuntu:
Invalid
Status in “gnome-settings-daemon” package in Ubuntu:
Fix Released
Status in “gnome-power-manager” source package in Precise:
New
Status in “gnome-settings-daemon” source package in Precise:
New
Bug description:
[Impact]
According to the current design in Ubuntu Precise, users can choose
the suspend time and blank time in the gnome control center (system
settings). However, there's another gsetting called "org.gnome
.settings-daemon.plugins.power idle-dim-time" which controls the
screen dim time. The default value of idle-dim-time in Ubuntu is 30
secs and this makes the screen dim after idle for 30 secs. This part
(idle-dim-time) is not accessible to users in the default UI but can
only be accessed by using the CLI.
This two categories of values (dim time/suspend&blank time) should
not be related at all, however, the current Ubuntu Precise (12.04)'s
gnome settings daemon (3.4.2) it actually suspend or blank the screen
on "user set time plus the dim time", which added additional 30 secs
by default. Since dim time is not accessible by users in default UI,
this confusing users why extra 30 secs is added to the total time on
top of the selected suspend/blank time.
In some OEM projects, in order to fulfill the OEM requests for
Energy Star standard, the dim time is set to 5 minutes default
(instead of 30 secs), and this make the suspend time and screen blank
time very inaccurate, because user will have additional 5 minutes to
wait before the screen blank or system suspend. (Inactive time to
suspend is about 5 minutes more than setting.)
* User do not need modify anything for this patch.
[Test Case]
* Please use Ubuntu Precise (12.04) to test, this issue is already
fixed in Ubuntu Raring (13.04)
* Set idle-dim-time to 300 first (5 minutes), it's much easier to find out
this issue.
(the default is 30 secs and it's somehow not as easy to observe, but the
result should be same.)
Command:
#gsettings set org.gnome.settings-daemon.plugins.power idle-dim-time 300
*In settings:
Turn screen off: 10 minutes
Suspend: 10 minutes on battery power, 30 minutes when plugged in.
Actual:
On battery: Screen turned off after 10 minutes, suspend after about 5 more
minutes(15 minutes total).
When plugged in: Screen turned off after 10 minutes, suspend after about 25
more minutes(35 minutes total).
Steps:
1. Check power settings and brightness settings
2. Leave the system inactive
Expected results: Inactive time to suspend is same as setting
Actual results: Inactive time to suspend is about 5 minutes more than
setting
[Regression Potential]
* This do not need to modify any user settings.
* The impact should be minimal for an inaccurate timing of
suspend/blanking.
[Other Info]
Original bug description:
When I set the various timeouts via dconf-editor, my computer does not
follow them precisely. I'm referring to these settings:
org.gnome.settings-daemon.plugins.power sleep-display-ac
org.gnome.settings-daemon.plugins.power sleep-display-battery
org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout
org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout
For example if I set all to 5, then the display sleeps at 30 seconds,
and the computer at 70 seconds. Similarly, if I set them all to 60,
the computer suspends around 90 seconds. I've only tried these shorter
settings. These are clearly values that are low for normal usage, but
this bug is very frustrating if one attempts to troubleshoot unrelated
automatic-sleep bugs. Firstly, I think I missed the case when
automatic sleep might have worked. Secondly, it increases the time it
takes to troubleshoot by a lot.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-power-manager 3.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic x86_64
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
Date: Tue Sep 25 09:43:50 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: gnome-power-manager
UpgradeStatus: Upgraded to precise on 2012-04-29 (148 days ago)
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