Nicolas Devillers, please do not solicit non-original reporter comments about a different bug report. This bug is focused solely on "[Dell Inspiron 15R 5521] Can't toggle backlight brightness".
Hence, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily kernel folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.12-rc3 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Confirmed => 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/1225811 Title: [Dell Inspiron 15R 5521] Can't toggle backlight brightness Status in “linux” package in Ubuntu: Incomplete Bug description: Since raring at least, it is not possible to setup backlight lightness without adding acpi_backlight=vendor into grub boot option. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-generic 3.11.0.7.8 ProcVersionSignature: Ubuntu 3.11.0-5.11-generic 3.11.0 Uname: Linux 3.11.0-5-generic x86_64 ApportVersion: 2.12.1-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: nicolas 2839 F.... pulseaudio Date: Mon Sep 16 02:05:10 2013 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=173db09c-bffc-4da9-ab42-7ca73f84e71f InstallationDate: Installed on 2013-04-08 (160 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MachineType: Dell Inc. Inspiron 5521 MarkForUpload: True ProcFB: 0 inteldrmfb 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-5-generic root=UUID=09af3e13-8004-48fa-b0fe-116acbf8d3d7 ro crashkernel=384M-2G:64M,2G-:128M quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-5-generic N/A linux-backports-modules-3.11.0-5-generic N/A linux-firmware 1.114 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: Upgraded to saucy on 2013-06-24 (83 days ago) dmi.bios.date: 06/25/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 0HK2KG dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A09 dmi.modalias: dmi:bvnDellInc.:bvrA09:bd06/25/2013:svnDellInc.:pnInspiron5521:pvrA09:rvnDellInc.:rn0HK2KG:rvrA00:cvnDellInc.:ct8:cvrA09: dmi.product.name: Inspiron 5521 dmi.product.version: A09 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1225811/+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
