** Description changed: I was using a 10.10 Ubuntu Wubi installation on a Lenovo Thinkpad X200, the issue was not present at this time. Kernel at this time 2.6.35. After a dist-upgrade via "update-manager -d" the following problem occured. By default the screen brightness is very low, even the highest brightness setting available via thinkpad hotkeys (working!) is to low to work comfortable. The lowest setting almost turns of the backlight all together. Workaround: - $ /proc/acpi/ibm$ sudo bash -c "echo 4 > /proc/acpi/ibm/cmos" + $ sudo bash -c "echo 4 > /proc/acpi/ibm/cmos" + + To automatize this script to run at every start without password prompt, follow these steps: + 1. create a text file with the above command as content, lets call it script.sh + 2. make it executable by + $ chmod 755 script.sh + 3. edit /etc/sudoers + $ EDITOR=nano sudo -E visudo + 4. add the following line at the end of the file (without $) + $ username ALL=(ALL) NOPASSWD:/home/username/.script.sh + 5. add the scripts paths to the Startup Applications This sets the increases the brightness scale available via the hotkeys and instantly increases the brightness of the backlight. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-6-generic-pae 2.6.38-6.34 Regression: Yes Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.38-6.34-generic-pae 2.6.38-rc7 Uname: Linux 2.6.38-6-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. 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: florian 1648 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: florian 1648 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 47' - Mixer name : 'Conexant CX20561 (Hermosa)' - Components : 'HDA:14f15051,17aa20ff,00100000' - Controls : 16 - Simple ctrls : 8 + Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 47' + Mixer name : 'Conexant CX20561 (Hermosa)' + Components : 'HDA:14f15051,17aa20ff,00100000' + Controls : 16 + Simple ctrls : 8 Card29.Amixer.info: - Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT22WW-1.04' - Mixer name : 'ThinkPad EC 7XHT22WW-1.04' - Components : '' - Controls : 1 - Simple ctrls : 1 + Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT22WW-1.04' + Mixer name : 'ThinkPad EC 7XHT22WW-1.04' + Components : '' + Controls : 1 + Simple ctrls : 1 Card29.Amixer.values: - Simple mixer control 'Console',0 - Capabilities: pswitch pswitch-joined penum - Playback channels: Mono - Mono: Playback [on] + Simple mixer control 'Console',0 + Capabilities: pswitch pswitch-joined penum + Playback channels: Mono + Mono: Playback [on] Date: Sat Mar 12 03:41:39 2011 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) MachineType: LENOVO 7454CTO ProcEnviron: - LANGUAGE=en_US:en - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_US:en + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-6-generic-pae root=UUID=DAA444ABA4448C47 loop=/ubuntu/disks/root.disk ro quiet splash RelatedPackageVersions: - linux-restricted-modules-2.6.38-6-generic-pae N/A - linux-backports-modules-2.6.38-6-generic-pae N/A - linux-firmware 1.48 + linux-restricted-modules-2.6.38-6-generic-pae N/A + linux-backports-modules-2.6.38-6-generic-pae N/A + linux-firmware 1.48 SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-03-12 (0 days ago) dmi.bios.date: 05/18/2009 dmi.bios.vendor: LENOVO dmi.bios.version: 6DET53WW (3.03 ) dmi.board.name: 7454CTO dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6DET53WW(3.03):bd05/18/2009:svnLENOVO:pn7454CTO:pvrThinkPadX200:rvnLENOVO:rn7454CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 7454CTO dmi.product.version: ThinkPad X200 dmi.sys.vendor: LENOVO
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/733654 Title: [thinkpad x200] lcd brightness very low after dist-upgrade -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
