kernel-packages team mailing list archive

[Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>]

There are some scenarios make turning off brightness not desirable, e.g.
an AIO user changes brightness to the lowest level in unity-control-
center, he can't change it back if his keyboard does not have brightness
hotkey.

Since we can't ensure that all graphics driver have the same mechanism
and each one of them does not change, I think it's a better choice to
let userspace program controls a consistent policy.

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https://bugs.launchpad.net/bugs/1381625

Title:
  Adjust brightness to lowest value caused screen whole black

Status in HWE Next:
  Confirmed
Status in Unity Settings Daemon:
  Fix Released
Status in linux package in Ubuntu:
  Confirmed
Status in unity-settings-daemon package in Ubuntu:
  Won't Fix

Bug description:
  [Impact]

  When adjusting screen brightness to lowest value, it turns screen
  backlight off.

  [Test Case]

  1. Install Image
  2. Press System's brightness hotkey to adjust the brightness level to the lowest or
  3. Go to System "Settings" -> "Brightness & Lock" to adjust brightness level to the lowest
  4. Check if the screen display still has backlight

  Expected results: There is still screen backlight

  Actual results: Sceen backlight is turned off

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