[Expired for linux (Ubuntu) because there has been no activity for 60 days.]
** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1681078 Title: backlight control not working Status in linux package in Ubuntu: Expired Bug description: I have followed the instructions at https://wiki.ubuntu.com/Kernel/Debugging/Backlight The backlight control only works when I try the workaround by passing ONLY the kernel parameter "acpi_osi=" by editing the kernel boot at startup (by pressing the shift key). However, when I try adding this parameter permanently to the grub file, it doesn't work anymore. Any idea how to fix this? Thank you in advance. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.8.0-46-generic 4.8.0-46.49~16.04.1 ProcVersionSignature: Ubuntu 4.8.0-46.49~16.04.1-generic 4.8.17 Uname: Linux 4.8.0-46-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: Unity Date: Sat Apr 8 20:47:09 2017 InstallationDate: Installed on 2017-04-06 (2 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) SourcePackage: linux-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1681078/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp