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[Bug 1370791] Re: [system-settings] When brightness is set to automatic, the slider doesn't show current value

 

With autobrigthness enabled we need to define the behavior for what
happens when the user tries to use the slider:

1 - it works but auto is still on and will reset it
2 - it signals user wants manual settings so disable auto
3 - the slider is disabled but reflects current brightness value

** Changed in: ubuntu-ux
       Status: Fix Committed => Confirmed

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https://bugs.launchpad.net/bugs/1370791

Title:
  [system-settings] When brightness is set to automatic, the slider
  doesn't show current value

Status in the base for Ubuntu mobile products:
  Confirmed
Status in The Power Indicator:
  Confirmed
Status in Ubuntu UX bugs:
  Confirmed
Status in indicator-power package in Ubuntu:
  Confirmed
Status in ubuntu-system-settings package in Ubuntu:
  Confirmed

Bug description:
  On the brightness page, there is a slider to set brightness and a
  checkbox to set it automatically.

  When I select the automatic brightness, I was expecting the slider to
  show the current brightness level. Instead, it just keeps the old
  value manually set. I find this a little confusing: I have a slider
  whose value I can change, but will do nothing while the checkbox is
  marked, and the value it shows is different from the current
  brightness of the screen.

  <https://wiki.ubuntu.com/BrightnessAndDisplays#Phone>: "Because users
  have different preferences, the function should also be user-
  adjustable. This should be achieved by altering the display brightness
  manually while 'Adjust automatically' is checked."

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