*** This bug is a duplicate of bug 765438 *** https://bugs.launchpad.net/bugs/765438
** Summary changed: - 8086:2a42 My backlight is off + 8086:2a42 [eMachines E725] My backlight is off -- 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/772050 Title: 8086:2a42 [eMachines E725] My backlight is off Status in “linux” package in Ubuntu: Confirmed Bug description: I just updated to Ubuntu 11.04 Beta to find that the backlight of my monitor is off (or very low) and I can't turn it on. The backlight intensity control never worked on any previous version of Ubuntu (the Fn key controls responded, and changed a bar on screen, but never really changed the backlight). The Fn key On/Off worked before. In the new kernel, the backlight is off (or very low) by default and the controls does not work, so I can't turn it on. Now I am using the old 2.6.35-28-generic kernel to report this bug. I hope enough info on the system has been gathered. My laptop is an eMachines E725. lspci report the following about the video device: 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] Device 0212 Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at d0000000 (64-bit, non-prefetchable) [size=4M] Memory at c0000000 (64-bit, prefetchable) [size=256M] I/O ports at 50f0 [size=8] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-8-generic 2.6.38-8.42 ProcVersionSignature: Ubuntu 2.6.35-28.50-generic 2.6.35.11 Uname: Linux 2.6.35-28-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lucas 1822 F.... pulseaudio /dev/snd/pcmC0D0p: lucas 1822 F...m pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xd6700000 irq 45' Mixer name : 'Realtek ALC272X' Components : 'HDA:10ec0272,10250212,00100001' Controls : 15 Simple ctrls : 9 Date: Wed Apr 27 18:33:25 2011 HibernationDevice: RESUME=UUID=3e3ff916-ea57-411c-81e3-43861b6b198d MachineType: eMachines eMachines E725 ProcEnviron: LANGUAGE=pt_BR:en LANG=pt_BR.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: root=UUID=2cdcad63-4a14-4e12-9cd4-bf10a0d49acd ro locale=pt_BR quiet splash crashkernel=384M-2G:64M,2G-:128M RelatedPackageVersions: linux-restricted-modules-2.6.35-28-generic N/A linux-backports-modules-2.6.35-28-generic N/A linux-firmware 1.52 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-04-27 (0 days ago) WpaSupplicantLog: dmi.bios.date: 03/11/2009 dmi.bios.vendor: eMachines dmi.bios.version: V1.03 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: eMachines E725 dmi.board.vendor: eMachines dmi.board.version: V1.03 dmi.chassis.type: 1 dmi.chassis.vendor: eMachines dmi.chassis.version: V1.03 dmi.modalias: dmi:bvneMachines:bvrV1.03:bd03/11/2009:svneMachines:pneMachinesE725:pvrV1.03:rvneMachines:rneMachinesE725:rvrV1.03:cvneMachines:ct1:cvrV1.03: dmi.product.name: eMachines E725 dmi.product.version: V1.03 dmi.sys.vendor: eMachines To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/772050/+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