This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1702666 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- 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/1702666 Title: [Dell Precision 7720] Unable to change brightness on this I+A laptop Status in linux package in Ubuntu: Incomplete Bug description: When you press the hotkey to adjust the screen brightness, the brightness level indicator will change accordingly, but the actual brightness does not. And from watching the brightness file in /sys/class/backlight/amdgpu_bl0, when the brightness control hotkey was pressed, it will change the value here (1~255). $ ls /sys/class/backlight/ amdgpu_bl0 intel_backlight This issue existed since 16.04.2 + 4.8 HWE kernel. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.10.0-27-generic 4.10.0-27.30~16.04.2 ProcVersionSignature: Ubuntu 4.10.0-27.30~16.04.2-generic 4.10.17 Uname: Linux 4.10.0-27-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.9 Architecture: amd64 Date: Thu Jul 6 06:37:41 2017 InstallationDate: Installed on 2017-07-06 (0 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170209) 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/1702666/+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