Public bug reported: Brightness controls no longer function on Lenovo 3000 N100. Screen is set very dim initially and cannot be altered.
Get 'ACPI: Failed to switch the brightness' in dmesg. Booting with acpi=off makes things work again. ProblemType: Bug AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC861-VD Analog [ALC861-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC861-VD Analog [ALC861-VD Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: neil 2388 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xd0340000 irq 22' Mixer name : 'Realtek ALC861-VD' Components : 'HDA:10ec0862,17aa8e2d,00100001 HDA:11c11040,11c10001,00100200' Controls : 19 Simple ctrls : 12 CheckboxSubmission: b382bfda81c9c56d0d686a30b144ce04 CheckboxSystem: 1e431fa57f6647496385ab519e345dd7 Date: Tue Sep 22 19:44:46 2009 DistroRelease: Ubuntu 9.10 HibernationDevice: RESUME=UUID=c779ba77-cadd-44f5-b908-870ff19b9ae1 MachineType: LENOVO 0768BXG Package: linux-image-2.6.31-10-generic 2.6.31-10.34 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-10-generic root=UUID=9ddd7600-9f82-496c-b868-b3a5d57b9dc9 ro quiet splash ProcEnviron: LANG=en_GB.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-10.34-generic RelatedPackageVersions: linux-backports-modules-2.6.31-10-generic N/A linux-firmware 1.19 SourcePackage: linux Uname: Linux 2.6.31-10-generic x86_64 dmi.bios.date: 04/30/07 dmi.bios.vendor: LENOVO dmi.bios.version: 63ET62WW dmi.board.name: CAPELL VALLEY(NAPA) CRB dmi.board.vendor: LENOVO dmi.board.version: Not Applicable dmi.chassis.type: 10 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnLENOVO:bvr63ET62WW:bd04/30/07:svnLENOVO:pn0768BXG:pvr3000N100:rvnLENOVO:rnCAPELLVALLEY(NAPA)CRB:rvrNotApplicable:cvnNoEnclosure:ct10:cvrN/A: dmi.product.name: 0768BXG dmi.product.version: 3000 N100 dmi.sys.vendor: LENOVO ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug regression-potential -- ACPI: Failed to switch the brightness https://bugs.launchpad.net/bugs/434822 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs