Alby M, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com /daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p linux <replace-with-bug-number> Also, could you please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. 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-v3.13-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. ** Tags added: bios-outdated-a24 ** No longer affects: linux (Ubuntu) ** Package changed: fedora => linux (Ubuntu) ** No longer affects: linux (Ubuntu) ** Package changed: centos => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Summary changed: - Dell Latitude e4200 Ambient Light sensor doesn't work + Dell [Latitude E4200] Ambient Light sensor doesn't work ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Importance: Medium => Low ** Summary changed: - Dell [Latitude E4200] Ambient Light sensor doesn't work + [Dell Latitude E4200] Ambient Light sensor doesn't work -- 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/887776 Title: [Dell Latitude E4200] Ambient Light sensor doesn't work Status in “linux” package in Ubuntu: Incomplete Bug description: I have a problem with my system, i think it's a kernel issue because light sensor stop to respond after kernel load. For example, when i am in the GRUB menu, light sensor work correctly and i can enable and disable sensor with FN+left arrow, but when kernel starts to load, without any module loaded (i stop loading to an emergency shell, so i eliminate issues concerning modules or any other software, i.e. gnome-power-manager), light sensor stops to work. I test my pc with a CentOS 5.5 live (kernel 2.6.18) and it's OK, also in emergency shell, if i try with CentOS 6 (kernel version over 2.6.30) the issue is present, so i think it's a kernel regression, but i'm not sure. My collegue with a Dell Latitude XT (it's an older series) has not the issue, its ambient light sensor works fine. with lsinput i identify the Dell Wky Hotkeys and if i check with /lib/udev/keymap -i input/event6 i read: scan code: 0x4B key code: unknown So is this a problem related to dell_wmi? What can i do to identify the issue more precisely? Ubuntu version: 11.10 --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: alby 2047 F.... pulseaudio CRDA: Error: [Errno 2] File o directory non esistente Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 47' Mixer name : 'Intel Cantiga HDMI' Components : 'HDA:111d76b2,10280277,00100302 HDA:80862802,80860101,00100000' Controls : 19 Simple ctrls : 11 DistroRelease: Ubuntu 11.10 HibernationDevice: RESUME=UUID=cb0b4561-895d-4949-8ea3-d84800d86cb7 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) MachineType: Dell Inc. Latitude E4200 Package: linux (not installed) ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-13-generic root=/dev/mapper/Debian-root ro quiet splash quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6 RelatedPackageVersions: linux-restricted-modules-3.0.0-13-generic N/A linux-backports-modules-3.0.0-13-generic N/A linux-firmware 1.60 StagingDrivers: mei Tags: oneiric staging Uname: Linux 3.0.0-13-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm admin cdrom dialout disk libvirtd lpadmin plugdev sambashare dmi.bios.date: 08/17/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A18 dmi.board.name: 0D516F dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA18:bd08/17/2010:svnDellInc.:pnLatitudeE4200:pvr:rvnDellInc.:rn0D516F:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude E4200 dmi.sys.vendor: Dell Inc. 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