Carl Englund, could you please confirm this issue exists with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains, 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 following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. 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-v3.11-rc4 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 If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags: kernel-unable-to-test-upstream kernel-unable-to-test-upstream-VERSION-NUMBER 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. ** Tags added: latest-bios-v1.19 needs-upstream-testing regression- potential ** Description changed: - - Running Ubuntu 12.10 amd64. - - Newest BIOS installed. - - Problem belongs to third group (as defined in https://wiki.ubuntu.com/Kernel/Debugging/Backlight): "Backlight control does not work, but there are entries in /sys/class/backlight." - - Neither fn+left/right nor system tools brightness control works. Adding "acpi_backlight=vendor" to bootparams fixes the problem. + "Backlight control does not work, but there are entries in /sys/class/backlight." + - Neither fn+left/right nor system tools brightness control works. + + WORKAROUND: acpi_backlight=vendor + + WORKAROUND: With acpi_osi=Linux I can now control the brightness lever + with the keys. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-19-generic 3.5.0-19.30 ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7 Uname: Linux 3.5.0-19-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: diskdoc 2728 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: diskdoc 2728 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Date: Sat Dec 8 01:16:24 2012 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=11efe0be-9f52-4ee5-ae6c-7e025de38353 InstallationDate: Installed on 2010-06-07 (914 days ago) InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1) MachineType: Acer Aspire 3820 MarkForUpload: True ProcFB: - 0 inteldrmfb - 1 radeondrmfb + 0 inteldrmfb + 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic root=UUID=8b7cae99-dae3-4d14-bbd3-24f82a9e0b57 ro quiet splash rootflags=data=writeback acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: - linux-restricted-modules-3.5.0-19-generic N/A - linux-backports-modules-3.5.0-19-generic N/A - linux-firmware 1.95 + linux-restricted-modules-3.5.0-19-generic N/A + linux-backports-modules-3.5.0-19-generic N/A + linux-firmware 1.95 SourcePackage: linux UpgradeStatus: Upgraded to quantal on 2012-12-05 (2 days ago) dmi.bios.date: 10/27/2010 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: V1.19 dmi.board.asset.tag: No Asset Tag dmi.board.name: JM31_CP dmi.board.vendor: Acer dmi.board.version: V1.19 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.19 dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.19:bd10/27/2010:svnAcer:pnAspire3820:pvrV1.19:rvnAcer:rnJM31_CP:rvrV1.19:cvnAcer:ct10:cvrV1.19: dmi.product.name: Aspire 3820 dmi.product.version: V1.19 dmi.sys.vendor: Acer ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Summary changed: - Brightness control not working on Acer TimelineX 3820T using Intel graphics + [Acer 3820T] Brightness control not working ** Summary changed: - [Acer 3820T] Brightness control not working + 8086:0046 [Acer 3820T] Brightness control not working -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087874 Title: 8086:0046 [Acer 3820T] Brightness control not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087874/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
