Bug#775500: mate-power-manager: brightness change popup using media keys has inconsistent 'progress bar'

[Mike Gabriel]

Control: tag -1 moreinfo

Hi Ayke,

On  Fr 16 Jan 2015 13:54:12 CET, Ayke van Laethem wrote:

> Package: mate-power-manager
> Version: 1.8.1+dfsg1-3
> Severity: normal
>
> Dear Maintainer,
>
> My laptop (Lenovo Thinkpad T60) has seven screen brightness levels, I'll call
> them level 0-6. Changing the brightness using the hardware keys occurs in two
> steps, e.g. from 0 to 2, from 1 to 3 etc., and the same in the reverse order.
> When the brightness is one step from the lowest or highest level, the
> brightness will change only one step as it can't change more than that.
>
> Now, when pressing these hardware keys a popup is shown displaying the new
> brightness value in a 'progress bar' (see fixed bug #766749). This works,
> except for the fact that when the last step is only a single level  
> change (from
> 1 to 0 or from 5 to 6), no change is displayed. The progress bar stays at the
> second-to-last value (1 or 5) and doesn't jump to the last one (0 or 6).
>
> I tried fiddling aroud with it a bit, and it looks like it does  
> sometimes jump
> to the last level when pressing the keys quickly, and sometimes when pressing
> the keys quickly it doesn't jump to the last level when the level goes from 2
> to 0 or from 4 to 6.
>
> Of course, I would expect the brightness level to be displayed properly, not
> stuck at the previous value.
>
> I tried a few different themes but none of them affect this behavior in any
> way.
>
> For type information about my laptop, see bug #766801.

I cannot confirm your observations on an HP Zbook 14pro.

@pkg-mate-team: can others please test the above on their mobile machines?

:-(
Mike
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