Screen Blanking Power Management Requirements

Kevin DuBois kevin.dubois at
Mon Jun 24 22:03:43 UTC 2013

I added myself for this requirement here (kgunn/robert_ancell, please move
task if there's a better place):

The approach sounds sensible. The event should come from somewhere else to
There is a caveat though, which is that we are not in a good place (from an
architectural position) to control the backlight settings when the screen
turns off. We can pause the mir server and turn the display off easily
enough, but the backlight control should probably be somewhere else.


On Mon, Jun 24, 2013 at 10:29 AM, Robert Carr <robert.carr at>wrote:

> Hi! There was a meeting today on power management requirements for Mir on
> phablet. Sending out an email to capture the new requirements.
> Essentially the model is as follows:
> The shell will use it's event filter, to emit DBus events, i.e. Session
> Idle (say no input in X minutes), Session Unidle.
> powerd will listen to these events and combine power management policy
> (i.e. do we blank the screen on idle? perhaps there is a video playing, so
> we do not at the moment), and in many cases ask the shell again "blank".
> So the requirement on Mir is for methods on mg::Display to blank/unblank
> the display. Is someone able to take this as a work item?
> Thanks,
> Robert
> --
> Mir-devel mailing list
> Mir-devel at
> Modify settings or unsubscribe at:
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the Mir-devel mailing list