** Description changed: 1) lsb_release -rd + Description: Ubuntu precise (development branch) + Release: 12.04 + + lsb_release -rd Description: Ubuntu oneiric (development branch) Release: 11.10 2) uname -a + Linux monikerpc 3.4.0-030400rc1-generic #201203312035 SMP Sun Apr 1 00:43:10 UTC 2012 i686 i686 i386 GNU/Linux + + apt-cache policy xfce4-power-manager-plugins + xfce4-power-manager-plugins: + Installed: 1.0.10-4 + Candidate: 1.0.10-4 + Version table: + *** 1.0.10-4 0 + 500 http://archive.ubuntu.com/ubuntu/ oneiric/universe i386 Packages + 100 /var/lib/dpkg/status + + uname -a Linux monikerpc 3.0.0-12-generic-pae #20-Ubuntu SMP Fri Oct 7 16:37:17 UTC 2011 i686 i686 i386 GNU/Linux http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.2-rc4-oneiric/ uname -r 3.2.0-030200rc4-generic - apt-cache policy xfce4-power-manager-plugins + apt-cache policy xfce4-power-manager-plugins xfce4-power-manager-plugins: - Installed: 1.0.10-4 - Candidate: 1.0.10-4 - Version table: - *** 1.0.10-4 0 - 500 http://archive.ubuntu.com/ubuntu/ oneiric/universe i386 Packages - 100 /var/lib/dpkg/status + Installed: 1.0.11-0ubuntu1 + Candidate: 1.0.11-0ubuntu1 + Version table: + *** 1.0.11-0ubuntu1 0 + 500 http://us.archive.ubuntu.com/ubuntu/ precise/universe i386 Packages + 100 /var/lib/dpkg/status 3) What is expected to happen when one presses the Fn key and the Left or Right arrow, the brightness goes up or down respectively. 4) What happens is the brightness does not change and remains at 100% no matter what. WORKAROUND: Changing /etc/default/grub from: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" save, sudo update-grub then restarting allowed brightness applet or keyboard Fn and Right or Left to change brightness. Following the debug info at:https://wiki.ubuntu.com/Kernel/Debugging/Backlight this issue falls into the "Backlight control does not work, but there are entries in /sys/class/backlight" category. lsmod | grep thinkpad_acpi does not yield any information. No such path as: /proc/acpi/video Following: https://wiki.ubuntu.com/BIOSandUbuntu#Buggy%20DSDT sudo acpidump -o acpidump.txt && acpixtract acpidump.txt Acpi table [DSDT] - 36436 bytes written to DSDT.dat Acpi table [SSDT] - 3010 bytes written to SSDT1.dat Acpi table [SSDT] - 2316 bytes written to SSDT2.dat Acpi table [SSDT] - 2454 bytes written to SSDT3.dat (Please see attached acpixtract.zip). iasl -d DSDT.dat Intel ACPI Component Architecture AML Disassembler version 20100528 [Oct 15 2010] Copyright (c) 2000 - 2010 Intel Corporation Supports ACPI Specification Revision 4.0a Loading Acpi table from file DSDT.dat Acpi table [DSDT] successfully installed and loaded Pass 1 parse of [DSDT] Pass 2 parse of [DSDT] Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions) ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Parsing completed Found 5 external control methods, reparsing with new information Pass 1 parse of [DSDT] Pass 2 parse of [DSDT] Parsing Deferred Opcodes (Methods/Buffers/Packages/Regions) ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Parsing completed Disassembly completed, written to "DSDT.dsl" (please see attached iasl -d DSDT.dat). Also, please see attached results.log for sudo fwts and sudo fwts method. Changing the "xfce4-brightness-plugin 1.0.10" to half way down goes from: /sys/class/backlight/intel_backlight$ grep . /sys/class/backlight/acpi_video0/* /sys/class/backlight/acpi_video0/actual_brightness:9 /sys/class/backlight/acpi_video0/bl_power:0 /sys/class/backlight/acpi_video0/brightness:9 /sys/class/backlight/acpi_video0/max_brightness:9 /sys/class/backlight/acpi_video0/type:firmware to: /sys/class/backlight/intel_backlight$ grep . /sys/class/backlight/acpi_video0/* /sys/class/backlight/acpi_video0/actual_brightness:5 /sys/class/backlight/acpi_video0/bl_power:0 /sys/class/backlight/acpi_video0/brightness:5 /sys/class/backlight/acpi_video0/max_brightness:9 /sys/class/backlight/acpi_video0/type:firmware Clicking on keyboard Fn and Left arrow together once goes from: /sys/class/backlight/intel_backlight$ grep . /sys/class/backlight/acpi_video0/* /sys/class/backlight/acpi_video0/actual_brightness:9 /sys/class/backlight/acpi_video0/bl_power:0 /sys/class/backlight/acpi_video0/brightness:9 /sys/class/backlight/acpi_video0/max_brightness:9 /sys/class/backlight/acpi_video0/type:firmware to: grep . /sys/class/backlight/acpi_video0/* /sys/class/backlight/acpi_video0/actual_brightness:7 /sys/class/backlight/acpi_video0/bl_power:0 /sys/class/backlight/acpi_video0/brightness:7 /sys/class/backlight/acpi_video0/max_brightness:9 /sys/class/backlight/acpi_video0/type:firmware dmesg|grep 'ACPI: Video' [ 4.181103] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) lspci |grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-12-generic-pae 3.0.0-12.19 ProcVersionSignature: Ubuntu 3.0.0-12.19-generic-pae 3.0.4 Uname: Linux 3.0.0-12-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu2 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: moniker 1750 F.... xfce4-volumed moniker 1798 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc0700000 irq 50' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:10ec0269,10250504,00100100 HDA:80862805,80860101,00100000' Controls : 20 Simple ctrls : 11 Date: Fri Sep 30 06:05:13 2011 EcryptfsInUse: Yes InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110921.3) MachineType: Acer Aspire 5750 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic-pae root=UUID=af001e50-f2b3-44af-a197-164b20aa8c44 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.0.0-12-generic-pae N/A linux-backports-modules-3.0.0-12-generic-pae N/A linux-firmware 1.60 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/11/2011 dmi.bios.vendor: Acer dmi.bios.version: V1.05 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JE50_HR dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.05 dmi.modalias: dmi:bvnAcer:bvrV1.05:bd02/11/2011:svnAcer:pnAspire5750:pvrV1.05:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.05: dmi.product.name: Aspire 5750 dmi.product.version: V1.05 dmi.sys.vendor: Acer
** Tags added: bot-stop-nagging precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/863156 Title: Brightness unchangeable via keyboard or brightness applet Acer Aspire 5750-9668 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/863156/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
