Since I'm not an expert, I don't have a clue what are 'acpi_video0' / 'acpi_video1' and if they work or not. But I can provide you with all info you need - just give me instructions how to extract them from my Ubuntu system. Thank you very much for your help.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1270579 Title: On laptops, screen brightness and keyboard backlight isn't memorized between sessions Status in Dell Sputnik: New Status in One Hundred Papercuts: Won't Fix Status in Linux Mint: Confirmed Status in upstart : Confirmed Status in cinnamon-settings-daemon package in Ubuntu: Confirmed Status in gnome-settings-daemon package in Ubuntu: Won't Fix Status in mate-settings-daemon package in Ubuntu: Fix Released Status in upower package in Ubuntu: Confirmed Status in upstart package in Ubuntu: Won't Fix Bug description: HOW TO REPRODUCE: 1. Boot a laptop. 2. Set a different screen (or keyboard) backlight brightness level. 3. Reboot. RESULT: Backlight is not memorized. FIX: A. For Ubuntu 12.04 LTS and 14.04 LTS install my package from PPA sudo add-apt-repository ppa:nrbrtx/sysvinit-backlight sudo apt-get update sudo apt-get install sysvinit-backlight NOTES: 1. If you have installed previous non-deb version, please remove it carefully manually sudo rm /etc/rc?.d/?25backlight /etc/init.d/brightness /etc/rc?.d/?25brightness 2. If you have installed previous version from my PPA on Ubuntu 14.04 LTS, please reinstall the package by: sudo apt-get purge sysvinit-backlight sudo apt-get install sysvinit-backlight 3. Version 0.1ubuntu1 supports save/restore of keyboard backlight too. B. Ubuntu 14.10 is at EOL (from July 2015), Ubuntu 15.04 is at EOL (from January 2016), Ubuntu 15.10 is near EOL (really at July 2016), so users should upgrade them to Ubuntu 16.04 (see C below). My script is incompatible with these Ubuntu versions - remove it with sudo apt-get purge sysvinit-backlight sudo add-apt-repository -r ppa:nrbrtx/sysvinit-backlight C. Ubuntu 15.04, 15.10 and 16.04 LTS have systemd-backlight@.service. It saves and restores screen and keyboard backlight levels. My script is incompatible with these Ubuntu versions. 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) To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1270579/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp