tested listed kernels non listed kernels are ones that where unbootable
3.7.0-030700-generic backlight not yet working 3.7.0-030700rc6-generic backlight not yet working 3.8.9-030809-generic backlight working 3.8.10-030810-generic backlight working 3.8.11-030811-generic backlight working 3.8.12-030812-generic backlight working 3.8.13-030813-generic backlight working 3.8.13-03081301-generic backlight working 3.8.13-03081302-generic backlight working 3.8.13-03081303-generic backlight working 3.8.13-03081304-generic backlight working 3.8.13-03081305-generic backlight working 3.8.13-03081306-generic backlight working 3.8.13-03081307-generic backlight working 3.8.13-03081308-generic backlight working 3.8.13-03081309-generic backlight working 3.8.13-03081310-generic backlight working 3.8.13-03081311-generic backlight working 3.8.13-03081312-generic backlight working 3.8.13-03081313-generic backlight working 3.8.13-03081314-generic backlight working 3.8.13-03081315-generic backlight working 3.8.13-03081316-generic backlight working 3.8.13-03081317-generic backlight working 3.8.13-03081318-generic backlight working 3.8.13-03081319-generic backlight working 3.8.13-03081320-generic backlight working 3.8.13-03081321-generic backlight working 3.8.13-03081322-generic backlight working 3.8.13-03081323-generic backlight working 3.8.13-03081324-generic backlight working 3.8.13-03081325-generic backlight working 3.8.13-03081326-generic backlight working 3.8.13-03081327-generic backlight working 3.8.13-03081328-generic backlight working 3.9.0-030900-generic backlight backlight working 3.9.0-030900rc7-generic backlight backlight working 3.9.0-030900rc8-generic backlight backlight working 3.9.1-030901-generic backlight backlight working 3.9.2-030902-generic backlight backlight working 3.9.3-030903-generic backlight backlight working 3.9.4-030904-generic backlight backlight working 3.9.5-030905-generic backlight backlight working 3.9.6-030906-generic backlight backlight working 3.9.7-030907-generic backlight backlight working 3.9.8-030908-generic backlight backlight working 3.9.9-030909-generic backlight backlight working 3.9.10-030910-generic backlight backlight working 3.9.11-030911-generic backlight backlight working 3.10.0-031000rc1-generic backlight doesn’t work 3.10.0-031000rc2-generic backlight doesn’t work 3.10.0-031000rc3-generic backlight doesn’t work 3.10.0-031000rc4-generic backlight doesn’t work 3.10.0-031000rc5-generic backlight doesn’t work 3.10.0-031000rc6-generic backlight doesn’t work 3.10.0-031000rc7-generic backlight doesn’t work 3.10.0-031000-generic backlight 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/1354710 Title: Backlight control does not work, but there are entries in /sys/class/backlight. Lenovo B570 Status in “linux” package in Ubuntu: Confirmed Bug description: Laptop model: Lenovo B570 package version: Ubuntu 3.13.0-32.57-generic 3.13.11.4 I expected the keys for changeing the backlight brightness to work they had no effect on the backlight further details in attatched Tar ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-32-generic 3.13.0-32.57 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic i686 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: x321x321 1977 F.... pulseaudio Date: Sat Aug 9 16:11:34 2014 HibernationDevice: RESUME=UUID=61c2c6a6-4b45-4af0-941a-dadf05ad0aba InstallationDate: Installed on 2014-07-31 (8 days ago) InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140723) MachineType: LENOVO 1068FJG ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.13.0-32-generic N/A linux-backports-modules-3.13.0-32-generic N/A linux-firmware 1.127.5 SourcePackage: linux StagingDrivers: rts5139 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/11/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 44CN36WW dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Emerald Lake dmi.board.vendor: LENOVO dmi.board.version: FAB1 dmi.chassis.asset.tag: Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnLENOVO:bvr44CN36WW:bd07/11/2011:svnLENOVO:pn1068FJG:pvrLenovoB570:rvnLENOVO:rnEmeraldLake:rvrFAB1:cvnLENOVO:ct10:cvr0.1: dmi.product.name: 1068FJG dmi.product.version: Lenovo B570 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1354710/+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
