*** This bug is a duplicate of bug 1163720 ***
https://bugs.launchpad.net/bugs/1163720
** Tags added: l322x
** This bug is no longer a duplicate of bug 954661
backlight brightness not adjustable by default on Dell XPS 13
** This bug has been marked a duplicate of bug 1163720
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
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https://bugs.launchpad.net/bugs/1182376
Title:
[Dell XPS 13(L322X)] Brightness control does not work on this system
Status in “linux” package in Ubuntu:
Fix Released
Bug description:
CID: 201209-11840
Brightness control does not work on this system.
The value of brightness level indicator could be changed correclty by
pressing brightness control keys,
and the brightness level could be changed in "Brightness and Lock" as well.
However, no matter how you change it, the actual brightness level of
this system remain the same.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.5.0-23-generic 3.5.0-23.35~precise1
ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25.
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC275 Analog [ALC275 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1414 F.... pulseaudio
CRDA:
country TW:
(2402 - 2472 @ 40), (3, 27)
(5270 - 5330 @ 40), (3, 17), DFS
(5735 - 5815 @ 40), (3, 30)
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xd0510000 irq 45'
Mixer name : 'Intel PantherPoint HDMI'
Components : 'HDA:10ec0275,1028058b,00100008
HDA:80862806,80860101,00100000'
Controls : 26
Simple ctrls : 11
Date: Tue May 21 17:00:46 2013
HibernationDevice: RESUME=UUID=e1117f50-f722-4f91-91a1-7efa8efa1ce8
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64
(20130213)
MachineType: Dell Inc. Dell System XPS L322X
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic
root=UUID=c337bf57-bd43-47b6-800f-9becf83aa95b ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-23-generic N/A
linux-backports-modules-3.5.0-23-generic N/A
linux-firmware 1.79.1
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/22/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: T40
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnDellInc.:bvrT40:bd01/22/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L322X
dmi.sys.vendor: Dell Inc.
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