Hi Christopher. Apparently the problem is now fixed in the mainline kernel. Even if I test it now with the 3.18 rc7 kernel, it is fixed. The problem is still there if I use the 3.14 kernel, however.
I do not know how this happened. I suspect that after upgrading the bios, I did not check with the 3.18 kernel, and the combination of new bios + new kernel fixed it... 1) Do I email the acpi mailinglist to let them know the problem is fixed? 2) Will this fix ever be backported to the trusty kernel? -- 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/1399611 Title: 8086:0046 [Acer Aspire 5742] Screen brightness not working Status in linux package in Ubuntu: Triaged Bug description: My laptop does not respond to the screen brightness control after default Ubuntu install. The following workaround worked: http://askubuntu.com/a/450594 It adds a config file to /usr/share/X11/xorg.conf.d/ adding acpi_backlight=vendor to boot params did nothing adding acpi_osi=Linux to boot params only fixed the keyboard shortcuts, but the screen indicator and the brightness settings dialog stopped working. Please let me know if this is not the right package, or if you need more info. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-40-generic 3.13.0-40.69 ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10 Uname: Linux 3.13.0-40-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lies 2944 F.... pulseaudio CurrentDesktop: Unity Date: Fri Dec 5 12:06:41 2014 HibernationDevice: RESUME=UUID=36715a89-8cd7-40cd-8d29-94f983036914 InstallationDate: Installed on 2014-11-23 (11 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) Lsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 04f2:b1d8 Chicony Electronics Co., Ltd Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Acer Aspire 5742 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-40-generic root=UUID=1bc3ee22-b016-4fcc-9668-30363b56faa9 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-40-generic N/A linux-backports-modules-3.13.0-40-generic N/A linux-firmware 1.127.10 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/11/2010 dmi.bios.vendor: Acer dmi.bios.version: V1.04 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Aspire 5742 dmi.board.vendor: Acer dmi.board.version: V1.04 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.04 dmi.modalias: dmi:bvnAcer:bvrV1.04:bd08/11/2010:svnAcer:pnAspire5742:pvrV1.04:rvnAcer:rnAspire5742:rvrV1.04:cvnAcer:ct10:cvrV1.04: dmi.product.name: Aspire 5742 dmi.product.version: V1.04 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1399611/+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
