** Tags removed: bios-outdated-a08 ** Tags added: latest-bios-a08 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.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/1185927
Title: 8086:0046 [Dell XPS 15 L501x] Unable to change backlight by default Status in “linux” package in Ubuntu: Incomplete Bug description: While I disabled my nvidia card in BIOS, I am unable to change the backlight by default. WORKAROUND: Use both kernel parameters: acpi_backlight=vendor dell_laptop.backlight=0 Having just 'acpi_backlight=vendor' means that if I quickly and repeatedly press the key to change brightness, it eventually lowers, but sometimes the down key makes it higher and visa versa, making it difficult to change. Adding 'dell_laptop.backlight=0' makes the controls work perfectly normally. But when I boot, I get the message: dell_laptop: '0' invalid parameter for 'backlight', at which my computer then continues to boot and works normally, with the brightness control working. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-image-3.8.0-22-generic 3.8.0-22.33 ProcVersionSignature: Ubuntu 3.8.0-22.33-generic 3.8.11 Uname: Linux 3.8.0-22-generic x86_64 ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: benjamin 4172 F.... pulseaudio /dev/snd/controlC0: benjamin 4172 F.... pulseaudio Date: Thu May 30 19:07:26 2013 HibernationDevice: RESUME=UUID=74004122-cb29-4972-92c0-8bd036223958 InstallationDate: Installed on 2013-04-26 (34 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Dell Inc. XPS L501X MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-22-generic root=UUID=df9e5312-fd68-4a0f-99fb-8b6667021bea ro quiet splash acpi_backlight=vendor dell_laptop.backlight=0 RelatedPackageVersions: linux-restricted-modules-3.8.0-22-generic N/A linux-backports-modules-3.8.0-22-generic N/A linux-firmware 1.106 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/15/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 00CKNG dmi.board.vendor: Dell Inc. dmi.board.version: A03 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A03 dmi.modalias: dmi:bvnDellInc.:bvrA03:bd10/15/2010:svnDellInc.:pnXPSL501X:pvrA03:rvnDellInc.:rn00CKNG:rvrA03:cvnDellInc.:ct8:cvrA03: dmi.product.name: XPS L501X dmi.product.version: A03 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1185927/+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
