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List:       kde-usability
Subject:    Re: powerdevil changing the brightness level - default behaviour
From:       Maciej Pilichowski <bluedzins () wp ! pl>
Date:       2009-01-11 9:09:33
Message-ID: 200901111009.33208.bluedzins () wp ! pl
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On Sunday 11 January 2009 02:56:57 Parker Coates wrote:

> As a programmer, these
> were the first implementations that jumped to mind.
>
> 1. Simply add a selector to switch between "Use manually set
> brightness level" and "Use brightness level from current profile".

This does not change a thing in this discussion because we are trying 
to figure out smart behaviour while _switching_ profiles, not the one 
fixed to one mode. In other words -- find an algorithm which would 
select the best choice from both worlds.

> 2. Get rid of the idea of a manually set brightness level. Instead
> have "manual" changes just alter the brightness value stored for
> the current profile.

See above. Again, this does not change a thing when switching from 
profile to profile.

Both options are really downgrading, it is possible to make the 
behaviour smarter so I opt for taking that chance and provide 
power-daemon which sticks to the configured plans (profiles) but on 
the other hand it takes into account current (on-fly) changes.

> They give the user full control, but don't do anything
> automatically.

As I often repeat -- let the computer do the computer job. Humans have 
too little time to be bothered with automatic stuff.

> But as this threads shows, such an
> algorithm might not exist as expectations vary from user to user.

I believe I described such algorithm, which minimizes chance of error, 
and keeps in mind preserving batteries. 

> I'm not sure if any of the above blabber is actually a useful
> contribution to this conversation, but I thought I'd mention it
> anyway, as this is an interesting situation where adding more
> "intelligence" to the system makes its actions sometimes appear
> "dumb".

Please, show me any counter-example when my algorithm fails, then:
a) I will agree with you
b) we will discuss such case and figure out better approach

Cheers,
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