No. I just tried again, as the kernel uas updated this morning. For this model the max value is 2, and the min is 0. I have tried all 3.
Cheers ---------------------------------------------------------- Chris Martin m: +61 419 812 371 e: [email protected] ---------------------------------------------------------- On Tue, 25 Jun 2019 at 15:00, Kai-Heng Feng <[email protected]> wrote: > Does backlight change when you change the "brightness" value? > > # echo 0 > /sys/class/leds/dell::kbd_backlight/brightness > # echo 2 > /sys/class/leds/dell::kbd_backlight/brightness > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1829095 > > Title: > Keyborad backligt does not work > > Status in linux package in Ubuntu: > Confirmed > > Bug description: > I have a dell XPS14 (L421X). In releases 18.04 and lower the keyboard > back light used to work. However in 18.10 and 19.04 it does not > > The dell_laptop model is loaded. > > ProblemType: Bug > DistroRelease: Ubuntu 19.04 > Package: ubuntu-desktop 1.431 > ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 > Uname: Linux 5.0.0-15-generic x86_64 > NonfreeKernelModules: nvidia wl > ApportVersion: 2.20.10-0ubuntu27 > Architecture: amd64 > CurrentDesktop: ubuntu:GNOME > Date: Wed May 15 11:44:51 2019 > InstallationDate: Installed on 2019-04-23 (21 days ago) > InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) > SourcePackage: ubuntu-meta > UpgradeStatus: No upgrade log present (probably fresh install) > --- > ProblemType: Bug > ApportVersion: 2.20.10-0ubuntu27 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: cmartin 2046 F.... pulseaudio > CurrentDesktop: ubuntu:GNOME > DistroRelease: Ubuntu 19.04 > InstallationDate: Installed on 2019-04-23 (23 days ago) > InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) > MachineType: Dell Inc. XPS L421X > NonfreeKernelModules: nvidia wl > Package: linux (not installed) > ProcFB: 0 inteldrmfb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-15-generic > root=UUID=994f28ca-26f0-46f9-9e20-27bb85872aa0 ro quiet splash vt.handoff=1 > ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 > RelatedPackageVersions: > linux-restricted-modules-5.0.0-15-generic N/A > linux-backports-modules-5.0.0-15-generic N/A > linux-firmware 1.178.1 > Tags: disco > Uname: Linux 5.0.0-15-generic x86_64 > UpgradeStatus: No upgrade log present (probably fresh install) > UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo > _MarkForUpload: True > dmi.bios.date: 02/08/2018 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: A17 > dmi.board.name: 0T8078 > dmi.board.vendor: Dell Inc. > dmi.board.version: A00 > dmi.chassis.type: 8 > dmi.chassis.vendor: Dell Inc. > dmi.chassis.version: A17 > dmi.modalias: > dmi:bvnDellInc.:bvrA17:bd02/08/2018:svnDellInc.:pnXPSL421X:pvrA17:rvnDellInc.:rn0T8078:rvrA00:cvnDellInc.:ct8:cvrA17: > dmi.product.family: 103C_5335KV > dmi.product.name: XPS L421X > dmi.product.sku: XPS L421X > dmi.product.version: A17 > dmi.sys.vendor: Dell Inc. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829095/+subscriptions > -- 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/1829095 Title: Keyborad backligt does not work Status in linux package in Ubuntu: Confirmed Bug description: I have a dell XPS14 (L421X). In releases 18.04 and lower the keyboard back light used to work. However in 18.10 and 19.04 it does not The dell_laptop model is loaded. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: ubuntu-desktop 1.431 ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 Uname: Linux 5.0.0-15-generic x86_64 NonfreeKernelModules: nvidia wl ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed May 15 11:44:51 2019 InstallationDate: Installed on 2019-04-23 (21 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) SourcePackage: ubuntu-meta UpgradeStatus: No upgrade log present (probably fresh install) --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cmartin 2046 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 19.04 InstallationDate: Installed on 2019-04-23 (23 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: Dell Inc. XPS L421X NonfreeKernelModules: nvidia wl Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-15-generic root=UUID=994f28ca-26f0-46f9-9e20-27bb85872aa0 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 RelatedPackageVersions: linux-restricted-modules-5.0.0-15-generic N/A linux-backports-modules-5.0.0-15-generic N/A linux-firmware 1.178.1 Tags: disco Uname: Linux 5.0.0-15-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/08/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: A17 dmi.board.name: 0T8078 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A17 dmi.modalias: dmi:bvnDellInc.:bvrA17:bd02/08/2018:svnDellInc.:pnXPSL421X:pvrA17:rvnDellInc.:rn0T8078:rvrA00:cvnDellInc.:ct8:cvrA17: dmi.product.family: 103C_5335KV dmi.product.name: XPS L421X dmi.product.sku: XPS L421X dmi.product.version: A17 dmi.sys.vendor: Dell Inc. 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