[Bug 287228] onMeeGo: while the device is plugedIn, the battery symbol vanishes, so that options like sleep cannot be activated

[Lamarque V. Souza]

https://bugs.kde.org/show_bug.cgi?id=287228





--- Comment #13 from Lamarque V. Souza <lamarque kde org>  2011-11-22 18:21:14 ---
(In reply to comment #11)
> > Hibernate requires swap, which mobile devices usually don't have.
> 
> Oh, I didn't know that. What does the hibernate button currently in the battery
> icon menu do, then?

    ksmserver queries org.freedesktop.PowerManagement to detect if the device
is capable of hibernating, sleeping, etc. Teoretically if the menu is there
is because the device is capable of hibernating. However, I am not sure if
org.freedesktop.PowerManagement is trustworthy since in my MeeGo image running
inside VirtualBox upower says the device is not capable of sleeping but
org.freedesktop.PowerManagement says it is. Sleep does not work, so upower is
right here. But hibernating works if I add the kernel parameter
resume=<swap partition> yet upower says it should not. So it is little fuzzy
here :-/

(In reply to comment #12)
> lock vs sleep -> the tablet should come out of sleep in 1-2 secons maximum;
> which makes always sleeping just fine. that resolves one more set of choices
> the user needs to make and also eliminates the "i thought it was sleeping, but
> it was just locked, and my battery drained" possibility

    The main reason for locking the screen is to prevent taps on it when
carrying the device inside a pocket or bag. In some cases the user would like
to
have the device running when carrying it, that is the cell phone case for
instance.

> battery hiding -> yes, the "it's doing something, so it's shown" concept is
> exactly what i had in mind. if it isn't charging or discharging, it's not
> necessary information. on the desktop, there's a lot of competing visuals to
> grapple with otherwise. 

    Be prepared for people complaining about hiding the battery icon, specially
 on mobile devices. People are not used to that and all other devices do not do
it. What bothers me about hiding it is the fact that we will have to change
icon's
positions to accomodate it and I do not like icons coming and going, it draws
attention. Think of you doing something (typing an e-mail), you are
concentrated and then the battery gets fully charged and the icon
disppears. You will notice something changed in the system tray and will look
at it to figure out what changed.

> battery consistency -> and i'd like to see us keep this consistent across
> plasma targets. keeping behaviour the same means less special coding in widgets
> for specific use cases and allows people to become familiar with the plasma
> ways across their devices.

    Agreed.

> as for the mockups on the exit screens, they look reasonable and could be
> implemented in ksmserver. what is there right now isn't amazing, even on the
> desktop, and a referesh of that would be nice to see. something more modern and
> that isn't the size of a postage stamp ;)

I will try to come up with something before the weekend. I am still learning
QML, so I cannot guarantee it will be in QML.

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