** Also affects: gnome-settings-daemon via https://bugzilla.gnome.org/show_bug.cgi?id=782211 Importance: Unknown Status: Unknown
-- 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/1683445 Title: E6430 brightness control not working Status in gnome-settings-daemon: Unknown Status in Linux: Confirmed Status in gnome-settings-daemon package in Ubuntu: Fix Released Status in linux package in Ubuntu: Invalid Status in unity-settings-daemon package in Ubuntu: Triaged Status in gnome-settings-daemon source package in Zesty: In Progress Status in unity-settings-daemon source package in Zesty: Triaged Bug description: Impact ------ It looks like GNOME's brightness control simply used the first backlight device it saw instead of one currently in use. This meant that the brightness control would not work on some computers with multiple GPUs. Test Case --------- From Ubuntu GNOME 17.04 on a dual-GPU computer, install the update. Restart. Does the brightness control now work correctly? Regression Potential -------------------- This looks like a minimal fix for this issue. It was accepted as part of gnome-settings-daemon 3.24.2 which all GNOME 3.24 distros will be upgrading to. Original Bug Report ------------------- The Dell E6430 with Nvidia Optimus enables in BIOS, using the Open Source Nouveau driver shows the brightness slider moving but does not affect the brightness. When using the kernel boot option acpi_backlight=vendor , the brightness control works. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-19-generic 4.10.0-19.21 ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8 Uname: Linux 4.10.0-19-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.4-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2081 F.... pulseaudio CurrentDesktop: Unity:Unity7 Date: Mon Apr 17 20:00:56 2017 HibernationDevice: RESUME=UUID=66528b53-0f42-4043-9ff8-da8f86036be6 InstallationDate: Installed on 2017-04-10 (7 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Beta amd64 (20170321) MachineType: Dell Inc. Latitude E6430 ProcFB: 0 nouveaufb 1 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-19-generic.efi.signed root=UUID=4e08c33d-f8cf-4159-a559-a0463d67b96c ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-19-generic N/A linux-backports-modules-4.10.0-19-generic N/A linux-firmware 1.164 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/18/2016 dmi.bios.vendor: Dell Inc. dmi.bios.version: A18 dmi.board.name: 0H3MT5 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA18:bd01/18/2016:svnDellInc.:pnLatitudeE6430:pvr01:rvnDellInc.:rn0H3MT5:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E6430 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-settings-daemon/+bug/1683445/+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
