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Message #90690
[Bug 1391153] UdevLog.txt
apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1391153/+attachment/4262944/+files/UdevLog.txt
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https://bugs.launchpad.net/bugs/1391153
Title:
Thnikpad X220 - brightness control doesn't work
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
After upgrading to Ubuntu 14.10 brightness control no longer works on
Lenovo Thinkpad X220. Fn+Home/Fn+End doesn't work, the only way is to
echo value to:
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight/brightness
I use Awesome WM, but it doesn't seem to be related to Awesome.
---
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0p: narel 3706 F...m pulseaudio
/dev/snd/controlC0: narel 3706 F.... pulseaudio
DistroRelease: Ubuntu 14.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=0f22933e-6234-43cf-8687-1245585a3025
InstallationDate: Installed on 2014-01-03 (318 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: LENOVO 4290PB8
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-24-generic root=/dev/mapper/ubuntu--vg-root ro acpi_backlight=vendor quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
RelatedPackageVersions:
linux-restricted-modules-3.16.0-24-generic N/A
linux-backports-modules-3.16.0-24-generic N/A
linux-firmware 1.138
Tags: utopic
Uname: Linux 3.16.0-24-generic x86_64
UpgradeStatus: Upgraded to utopic on 2014-11-07 (10 days ago)
UserGroups: adm audio cdrom dialout dip libvirtd lpadmin plugdev pulse pulse-access remote sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/19/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET63WW (1.33 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4290PB8
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:bvr8DET63WW(1.33):bd07/19/2012:svnLENOVO:pn4290PB8:pvrThinkPadX220:rvnLENOVO:rn4290PB8:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4290PB8
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
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