touch-packages team mailing list archive

[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Description changed:

- Dear all!
+ HOW TO REPRODUCE:
+ 1. Cool boot a laptop.
+ 2. Set a different screen brightness level.
+ 3. Reboot.
  
- 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.
+ RESULT:
+ Backlight is not memorized.
  
- 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.
- ".
- 
- =========================================
- 
- Steps to reproduce:
- 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 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 (see my comment on askubuntu http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart/227553#227553) - 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 on 2014-12-28 I presented 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 aPlease note: ire packed to archive (see attachment to comment #18 - https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz ).
- The script is tested on Ubuntu Precise 12.04.5 and Ubuntu Trusty 14.04.1.
- 
- If you have installed its previous version (from 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!
- 
- To Ubuntu developers: please contact me if you are ready to include and
- distribute my script to 12.04 and 14.04 deb-pakages.
- 
- =========================================
+ FIX:
+ Into the "Terminal" application, enter the following lines one by one:
+   - wget https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz
+   - sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness
+   - sudo tar -zxvf upstart_brightness.tar.gz -C /
+   - rm upstart_brightness.tar.gz
  
  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)

** Summary changed:

- Ubuntu should have an upstart job for saving/restoring backlight level on laptops
+ On laptops, screen brightness isn't memorized between sessions

** Changed in: hundredpapercuts
   Importance: Medium => Low

** Description changed:

  HOW TO REPRODUCE:
- 1. Cool boot a laptop.
+ 1. Boot a laptop.
  2. Set a different screen brightness level.
  3. Reboot.
  
  RESULT:
  Backlight is not memorized.
  
  FIX:
  Into the "Terminal" application, enter the following lines one by one:
-   - wget https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz
-   - sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness
-   - sudo tar -zxvf upstart_brightness.tar.gz -C /
-   - rm upstart_brightness.tar.gz
+   - wget https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz
+   - sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness
+   - sudo tar -zxvf upstart_brightness.tar.gz -C /
+   - rm upstart_brightness.tar.gz
  
  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)

** Changed in: hundredpapercuts
   Importance: Low => Wishlist

** Also affects: upstart
   Importance: Undecided
       Status: New

** No longer affects: systemd (Ubuntu)

** No longer affects: sysvinit (Ubuntu)

** Package changed: sysvinit (Debian) => sysvinit (Ubuntu)

** No longer affects: sysvinit (Ubuntu)

** Changed in: upstart
       Status: New => Confirmed

** No longer affects: hundredpapercuts

** Project changed: ubuntu-mate => hundredpapercuts

** Changed in: hundredpapercuts
       Status: Opinion => Confirmed

** Changed in: linuxmint
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1270579

Title:
  On laptops, screen brightness isn't memorized between sessions

Status in elementary OS:
  Confirmed
Status in One Hundred Papercuts:
  Confirmed
Status in The Linux Mint Distribution:
  Confirmed
Status in Upstart:
  Confirmed
Status in upstart package in Ubuntu:
  Confirmed

Bug description:
  HOW TO REPRODUCE:
  1. Boot a laptop.
  2. Set a different screen brightness level.
  3. Reboot.

  RESULT:
  Backlight is not memorized.

  FIX:
  Into the "Terminal" application, enter the following lines one by one:
    - wget https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1270579/+attachment/4288756/+files/upstart_brightness.tar.gz
    - sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness
    - sudo tar -zxvf upstart_brightness.tar.gz -C /
    - rm upstart_brightness.tar.gz

  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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