apport information ** Tags added: apport-collected precise
** Description changed: Pressing Fn + Brightness Up and Down results in the brightness indicator jumping randomly up and down, with no change to the actual brightness. This laptop uses a nvidia graphics card for display and brightness which is not supported by ubuntu's default configuration. There is only one way that I have found to actually make the brightness go up and down: 1. Add acpi_osi=Linux acpi_backlight=vendor ro to /boot/grub/grub.cfg 2. Type echo 5 > /sys/class/backlight/nv_backlight/brightness And even with acpi_backlight=vendor switched on, using the Fn key to affect brightness still does not work, presumably because its trying to use dell_backlight, which does nothing. Output of ls /sys/class/backlight with acpi_backlight=vendor: root@r-Inspiron-1370:~# ls /sys/class/backlight dell_backlight nv_backlight root@r-Inspiron-1370:~# - Normally this only contains acpi_video0 (off top of head so might be a - typo). I think someone needs to make a patch to fix this bug. + Normally this only contains acpi_video0 (off top of head so might be a typo). I think someone needs to make a patch to fix this bug. + --- + AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. + ApportVersion: 2.0.1-0ubuntu7 + Architecture: i386 + ArecordDevices: + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC1: r 2030 F.... pulseaudio + /dev/snd/controlC0: r 2030 F.... pulseaudio + Card0.Amixer.info: + Card hw:0 'Intel'/'HDA Intel at 0xf1400000 irq 46' + Mixer name : 'Realtek ALC272' + Components : 'HDA:10ec0272,10280418,00100001' + Controls : 11 + Simple ctrls : 6 + Card1.Amixer.info: + Card hw:1 'NVidia'/'HDA NVidia at 0xf1000000 irq 16' + Mixer name : 'Nvidia GPU 0b HDMI/DP' + Components : 'HDA:10de000b,10de0101,00100100' + Controls : 24 + Simple ctrls : 4 + DistroRelease: Ubuntu 12.04 + HibernationDevice: RESUME=UUID=466a8816-87d1-4087-869f-2e4d02cbf791 + InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) + MachineType: Dell Inc. Inspiron 1370 + Package: linux (not installed) + ProcEnviron: + TERM=xterm + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash + ProcFB: 0 nouveaufb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=ce5b90bb-32e1-4bb1-98c0-ba189425a158 ro quiet splash vt.handoff=7 + ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16 + PulseList: + Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/r not ours. + No PulseAudio daemon running, or not running as session daemon. + RelatedPackageVersions: + linux-restricted-modules-3.2.0-24-generic N/A + linux-backports-modules-3.2.0-24-generic N/A + linux-firmware 1.79 + SourcePackage: linux + Tags: precise precise + Uname: Linux 3.2.0-24-generic i686 + UpgradeStatus: Upgraded to precise on 2012-05-04 (23 days ago) + UserGroups: disk + dmi.bios.date: 10/28/2009 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: A02 + dmi.board.name: 016YGK + dmi.board.vendor: Dell Inc. + dmi.board.version: A02 + dmi.chassis.asset.tag: None + dmi.chassis.type: 8 + dmi.chassis.vendor: Dell Inc. + dmi.chassis.version: A02 + dmi.modalias: dmi:bvnDellInc.:bvrA02:bd10/28/2009:svnDellInc.:pnInspiron1370:pvrA02:rvnDellInc.:rn016YGK:rvrA02:cvnDellInc.:ct8:cvrA02: + dmi.product.name: Inspiron 1370 + dmi.product.version: A02 + dmi.sys.vendor: Dell Inc. ** Attachment added: "AcpiTables.txt" https://bugs.launchpad.net/bugs/994697/+attachment/3165469/+files/AcpiTables.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/994697 Title: Dell 1370 brightness not working, To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/994697/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
