Bug 274048

Summary: default power profiles do not disable desktop effects
Product: [Frameworks and Libraries] solid Reporter: Manuel López-Ibáñez <lopezibanez>
Component: powermanagementAssignee: Dario Freddi <drf>
Status: RESOLVED INTENTIONAL    
Severity: wishlist CC: kwin-bugs-null
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:

Description Manuel López-Ibáñez 2011-05-24 18:09:53 UTC 
Version:           1.0 (using KDE 4.6.2) 
OS:                Linux

In the default profiles of global Power Management settings, no profile disables the desktop effects, which is something that was done in an earlier version when the battery reached the warning level.

Relatedly, there are no default profiles for warning and critical levels.

The default profiles (BrightnessControl,Performance,Powersave) are insufficient. What happened with the previous ones (Presentation,Extreme Power Save)?



Reproducible: Always




OS: Linux (i686) release 2.6.38-8-generic-pae
Compiler: cc
Comment 1 Martin Flöser 2011-05-24 22:15:15 UTC 
Turning off compositing when the battery runs low is the worst thing you can do, because both KWin and Plasma get really heavy load and will drain your battery further. This makes the wish to me a wontfix as what we want is to provide the most long lasting battery and that's best achieved with don't changing the compositing state at least with our defaults.

Some more argumenting on the issue can be found in my blog: http://blog.martin-graesslin.com/blog/2011/04/turning-compositing-off-in-the-right-way/
Comment 2 Manuel López-Ibáñez 2011-05-24 22:22:26 UTC 
(In reply to comment #1)
> Turning off compositing when the battery runs low is the worst thing you can
> do, because both KWin and Plasma get really heavy load and will drain your
> battery further. This makes the wish to me a wontfix as what we want is to
> provide the most long lasting battery and that's best achieved with don't
> changing the compositing state at least with our defaults.

Fair enough. However, I would open a new bug report for the other issues. The other profiles were still useful.