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[Bug 1270579] Re: Ubuntu should have an init script for saving/restoring backlight level on laptops

 

This bug is a great usability problem. Let's see:
1. User boots laptop (cold boot, not wake from suspend)
2. User sets comfortable backlight level
3. User ends his/her work by shutting down the laptop (not suspend, so backlight level is not saved)
4. Go to 1 (another cold boot with reseted backlight level).

According to original Ask Ubuntu thread there are many users which are
interested in implementation of the aforementioned functionality.

Other distros have this functionality, but Ubuntu does not. It is a disadvantage.
On my laptop I (as an author of the script) have backlight save/restore functionality, but newbies does not. I think that this bug must be fixed as fast as possible.

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https://bugs.launchpad.net/bugs/1270579

Title:
  Ubuntu should have an init script for saving/restoring backlight level
  on laptops

Status in elementary OS:
  New
Status in One Hundred Papercuts:
  Confirmed
Status in Ubuntu MATE:
  Opinion
Status in “sysvinit” package in Ubuntu:
  Confirmed
Status in “sysvinit” package in Debian:
  New

Bug description:
  I have tested many distros - Arch, OpenSuSe 13.1, Fedora 20, ALT Linux p7, Sabayon, Mageia 4.
  Many of them are based on systemd.
  It does not matter what init system they use, but all of them have very usefull script (or binary program, I don't know) for saving and restoring backlight level on laptop.

  In these distros there is a script for save and restore backlight levels for two video-cards (acpi_video0 and acpi_video1). During system boot it is indicated as follows:
  "
  [  OK  ] Started Load/Save Screen Backlight Brightness of acpi_video1.
  [  OK  ] Started Load/Save Screen Backlight Brightness of acpi_video0.
  ".

  I have a draft version, which works normally on my VAIO F13Z1R laptop with Ubuntu 12.04.4. It is in attachment.
  You can use it unmodified or modify it for compatibility or something. I made symlinks for it:
  ln -s /etc/init.d/brightness /etc/rc0.d/S25backlight
  ln -s /etc/init.d/brightness /etc/rcS.d/S25backlight
  ln -s /etc/init.d/brightness /etc/rc6.d/S25backlight

  For details you can read my comment on askubuntu
  (http://askubuntu.com/a/227553/66509).

  I think that having a script for saving and restoring backlight level is very useful for laptop Ubuntu users.
  So, please, add such init script to default Ubuntu installation.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: initscripts 2.88dsf-41ubuntu5
  ProcVersionSignature: Ubuntu 3.13.0-4.19-generic 3.13.0-rc8
  Uname: Linux 3.13.0-4-generic i686
  ApportVersion: 2.13.1-0ubuntu1
  Architecture: i386
  CurrentDesktop: GNOME
  Date: Sun Jan 19 17:20:26 2014
  InstallationDate: Installed on 2013-10-20 (91 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release i386 (20131016.1)
  SourcePackage: sysvinit
  UpgradeStatus: Upgraded to trusty on 2013-11-19 (61 days ago)

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