Bence Lukács, 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, but the one all the way at the bottom) 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-v3.12 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 use this laptop since 10.04 and I always have to write something into /etc/default/grub, to solve this problem. - Now on precise it is properly working if I write "acpi_backlight=vendor" to this line: - GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" - Is it possible to fix this bug, to work the brightness change out of the box? - I really hope it is. - It doesn't work since 2009.06.27. - These are the bugs which is connected to this problem: - https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/392948 - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/489041 - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/518002 - https://bugs.launchpad.net/ubuntu/+bug/773820 - I hope I attached everything which necessary, if not please let me know what I should send. + I use this laptop since 10.04 and I always have to write something into + /etc/default/grub, to solve this problem. + + WORKAROUND: Use kernel parameter: + acpi_backlight=vendor ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-17-generic-pae 3.2.0-17.27 ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6 Uname: Linux 3.2.0-17-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.93-0ubuntu2 Architecture: i386 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: lukibeni 1665 F.... pulseaudio - /dev/snd/pcmC0D0p: lukibeni 1665 F...m pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: lukibeni 1665 F.... pulseaudio + /dev/snd/pcmC0D0p: lukibeni 1665 F...m pulseaudio Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xf0700000 irq 45' - Mixer name : 'Conexant CX20561 (Hermosa)' - Components : 'HDA:14f15051,10250253,00100000' - Controls : 18 - Simple ctrls : 12 + Card hw:0 'Intel'/'HDA Intel at 0xf0700000 irq 45' + Mixer name : 'Conexant CX20561 (Hermosa)' + Components : 'HDA:14f15051,10250253,00100000' + Controls : 18 + Simple ctrls : 12 Date: Sun Feb 26 09:19:11 2012 HibernationDevice: RESUME=UUID=9e4f77a4-98e9-48ec-97e5-07dc5ae08872 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120201.1) MachineType: Acer Extensa 5235 ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=hu_HU.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=hu_HU.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-17-generic-pae root=UUID=5b2cd82c-58ab-45e6-9719-02f98b6c857b ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.2.0-17-generic-pae N/A - linux-backports-modules-3.2.0-17-generic-pae N/A - linux-firmware 1.71 + linux-restricted-modules-3.2.0-17-generic-pae N/A + linux-backports-modules-3.2.0-17-generic-pae N/A + linux-firmware 1.71 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/09/2009 dmi.bios.vendor: Phoenix dmi.bios.version: V0.3216 dmi.board.name: BA50-MV dmi.board.vendor: Acer dmi.board.version: Not Applicable dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenix:bvrV0.3216:bd06/09/2009:svnAcer:pnExtensa5235:pvrNotApplicable:rvnAcer:rnBA50-MV:rvrNotApplicable:cvnAcer:ct10:cvrN/A: dmi.product.name: Extensa 5235 dmi.product.version: Not Applicable dmi.sys.vendor: Acer ** Tags added: bios-outdated-3310 needs-upstream-testing ** Changed in: linux (Ubuntu) Status: Triaged => Incomplete ** Changed in: linux (Ubuntu) Importance: Medium => Low -- 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/941286 Title: Setting brightness doesn't work out of the box on Acer Extensa 5235 Status in The Linux Kernel: Fix Released Status in “linux” package in Ubuntu: Incomplete Bug description: I use this laptop since 10.04 and I always have to write something into /etc/default/grub, to solve this problem. WORKAROUND: Use kernel parameter: acpi_backlight=vendor ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-17-generic-pae 3.2.0-17.27 ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6 Uname: Linux 3.2.0-17-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.93-0ubuntu2 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lukibeni 1665 F.... pulseaudio /dev/snd/pcmC0D0p: lukibeni 1665 F...m pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf0700000 irq 45' Mixer name : 'Conexant CX20561 (Hermosa)' Components : 'HDA:14f15051,10250253,00100000' Controls : 18 Simple ctrls : 12 Date: Sun Feb 26 09:19:11 2012 HibernationDevice: RESUME=UUID=9e4f77a4-98e9-48ec-97e5-07dc5ae08872 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120201.1) MachineType: Acer Extensa 5235 ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=hu_HU.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-17-generic-pae root=UUID=5b2cd82c-58ab-45e6-9719-02f98b6c857b ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-17-generic-pae N/A linux-backports-modules-3.2.0-17-generic-pae N/A linux-firmware 1.71 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/09/2009 dmi.bios.vendor: Phoenix dmi.bios.version: V0.3216 dmi.board.name: BA50-MV dmi.board.vendor: Acer dmi.board.version: Not Applicable dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenix:bvrV0.3216:bd06/09/2009:svnAcer:pnExtensa5235:pvrNotApplicable:rvnAcer:rnBA50-MV:rvrNotApplicable:cvnAcer:ct10:cvrN/A: dmi.product.name: Extensa 5235 dmi.product.version: Not Applicable dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/941286/+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
