** 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 Desktop Bugs, which is subscribed to a duplicate bug report (403075). https://bugs.launchpad.net/bugs/1270579 Title: On laptops, screen brightness isn't memorized between sessions To manage notifications about this bug go to: https://bugs.launchpad.net/elementaryos/+bug/1270579/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
