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[Norbert <1270579@xxxxxxxxxxxxxxxxxx>]

Dear all!

According to the list of duplicates and bug heat this bug/feature
request is very important.

As you know laptop market share is gigantic (see for example  http://www.statista.com/statistics/276772/ultrabook-share-of-global-notebook-market-since-2011/ for stats).
Also Ubuntu and Debian market share are increasing.

So I can't believe why this usability fault exists in Ubuntu (and Debian) for years. 
It seems that guys from `systemd` understand the problem correctly (sooner or later - on 14 Aug 2013, see https://github.com/systemd/systemd/commits/56f64d95763a799ba4475daf44d8e9f72a1bd474/src/backlight/backlight.c ), but `upstart` and `sysvinit` developers not.

As you can remember I tried to fix the problem by myself - I created first version of an init script for saving and restoring backlight level (on 10 Dec 2012 - two years ago). 
It had one disadvantage - it operates only when laptop has one graphical adaptor and its name was hardcoded to the script (*acpi_video0* in my case).
So today I present new version of a script - it can save and restore backlight levels of all graphical, adaptors, which are found in `/sys/class/backlight/*`.
The init script with symlink are packed to archive (see attachment).
If  you have installed its previous version (see comment #15) - you can remove its files with commands:
     sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness
then extract new version with commands:
     sudo tar -zxvf upstart_brightness.tar.gz -C /

I hope my script will help somebody.
Thanks for testing!


** Attachment added: "new version of backlight saving/restoring script"
   https://bugs.launchpad.net/ubuntu/+source/sysvinit/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz

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

Title:
  Ubuntu should have an upstart job 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 systemd package in Ubuntu:
  Triaged
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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