Krzysztof Dłużyński, 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-3.15-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. ** Description changed: I was trying to attach all the debugging information you have requested in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of course I can attach only one file. "You had only one job !" god damn it ! So here you have it packed - just as you dont like. + + WORKAROUND: video.use_bios_initial_backlight=0 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic] ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: krzysiek 1727 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: krzysiek 1727 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 29 17:53:20 2014 HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441 InstallationDate: Installed on 2014-04-28 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Acer Aspire 5830TG ProcFB: - 0 inteldrmfb - 1 nouveaufb + 0 inteldrmfb + 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 ro quiet splash vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.13.0-24-generic N/A - linux-backports-modules-3.13.0-24-generic N/A - linux-firmware 1.127 + linux-restricted-modules-3.13.0-24-generic N/A + linux-backports-modules-3.13.0-24-generic N/A + linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/14/2012 dmi.bios.vendor: Acer dmi.bios.version: V1.12 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM50_HR dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.12 dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12: dmi.product.name: Aspire 5830TG dmi.product.version: V1.12 dmi.sys.vendor: Acer ** Description changed: I was trying to attach all the debugging information you have requested in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of course I can attach only one file. "You had only one job !" god damn it ! So here you have it packed - just as you dont like. - WORKAROUND: video.use_bios_initial_backlight=0 + WORKAROUND: video.use_bios_initial_backlight=1 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic] ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: krzysiek 1727 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 29 17:53:20 2014 HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441 InstallationDate: Installed on 2014-04-28 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Acer Aspire 5830TG ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/14/2012 dmi.bios.vendor: Acer dmi.bios.version: V1.12 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM50_HR dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.12 dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12: dmi.product.name: Aspire 5830TG dmi.product.version: V1.12 dmi.sys.vendor: Acer ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1314263 Title: [Aspire 5830TG] Backlight control does not work, but there are entries in /sys/class/backlight. Status in “linux” package in Ubuntu: Incomplete Bug description: I was trying to attach all the debugging information you have requested in https://wiki.ubuntu.com/Kernel/Debugging/Backlight but of course I can attach only one file. "You had only one job !" god damn it ! So here you have it packed - just as you dont like. WORKAROUND: video.use_bios_initial_backlight=1 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic] ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: krzysiek 1727 F.... pulseaudio CurrentDesktop: Unity Date: Tue Apr 29 17:53:20 2014 HibernationDevice: RESUME=UUID=98bb6fc0-55d5-4f87-8ee0-b29de4104441 InstallationDate: Installed on 2014-04-28 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Acer Aspire 5830TG ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=aa11c6e0-57f7-4803-a66d-18ffc0a43790 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/14/2012 dmi.bios.vendor: Acer dmi.bios.version: V1.12 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM50_HR dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.12 dmi.modalias: dmi:bvnAcer:bvrV1.12:bd08/14/2012:svnAcer:pnAspire5830TG:pvrV1.12:rvnAcer:rnJM50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.12: dmi.product.name: Aspire 5830TG dmi.product.version: V1.12 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1314263/+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