| 2014-07-20 08:01:14 |
jdillmann |
bug |
|
|
added bug |
| 2014-07-20 08:01:59 |
jdillmann |
bug |
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added subscriber Christopher M. Penalver |
| 2014-07-20 08:03:26 |
jdillmann |
description |
As requested by https://launchpad.net/~penalvch in the existing bugreport https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308674 i provide more information about the bug.
As explained in the original bug report, the brightness control on the lenovo thinkpad x220 is no longer working after undocking. it is stuck an the lowest level and can't by changed with the hotkeys.
But it is still possible to set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
Besides intel_backlight there is /sys/class/backlight/acpi_video0/ which has no effect.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install) |
As requested by https://launchpad.net/~penalvch in the existing bugreport https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308674 i provide more information about the bug.
As explained in the original bug report, the brightness control on the lenovo thinkpad x220 is no longer working after undocking. it is stuck an the lowest level and can't by changed with the hotkeys.
But it is still possible to set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
Besides intel_backlight there is /sys/class/backlight/acpi_video0/ which has no effect.
The bug occurs when using kernel 3.13 on 12.04 and on 14.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2014-07-20 18:05:11 |
penalvch |
description |
As requested by https://launchpad.net/~penalvch in the existing bugreport https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1308674 i provide more information about the bug.
As explained in the original bug report, the brightness control on the lenovo thinkpad x220 is no longer working after undocking. it is stuck an the lowest level and can't by changed with the hotkeys.
But it is still possible to set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
Besides intel_backlight there is /sys/class/backlight/acpi_video0/ which has no effect.
The bug occurs when using kernel 3.13 on 12.04 and on 14.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install) |
The brightness control on the Lenovo ThinkPad x220 is no longer working after undocking. It is stuck an the lowest level and can't by changed with the hotkeys. There is /sys/class/backlight/acpi_video0/ which has no effect. The bug occurs when using kernel 3.13 on 12.04 and on 14.04.
WORKAROUND: Set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install) |
|
| 2014-07-20 18:05:50 |
penalvch |
affects |
linux-lts-trusty (Ubuntu) |
linux (Ubuntu) |
|
| 2014-07-20 18:05:50 |
penalvch |
linux (Ubuntu): importance |
Undecided |
Low |
|
| 2014-07-20 18:05:50 |
penalvch |
linux (Ubuntu): status |
New |
Incomplete |
|
| 2014-07-20 20:34:56 |
jdillmann |
tags |
amd64 apport-bug precise |
amd64 apport-bug apport-collected precise |
|
| 2014-07-20 20:34:57 |
jdillmann |
description |
The brightness control on the Lenovo ThinkPad x220 is no longer working after undocking. It is stuck an the lowest level and can't by changed with the hotkeys. There is /sys/class/backlight/acpi_video0/ which has no effect. The bug occurs when using kernel 3.13 on 12.04 and on 14.04.
WORKAROUND: Set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install) |
The brightness control on the Lenovo ThinkPad x220 is no longer working after undocking. It is stuck an the lowest level and can't by changed with the hotkeys. There is /sys/class/backlight/acpi_video0/ which has no effect. The bug occurs when using kernel 3.13 on 12.04 and on 14.04.
WORKAROUND: Set the brightness through /sys/class/backlight/intel_backlight/
The hotkeys are working again after setting the brightness once on the command line.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-30-generic 3.13.0-30.55~precise1
ProcVersionSignature: Ubuntu 3.13.0-30.55~precise1-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Sun Jul 20 09:39:01 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install)
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-32-generic.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CX20590 Analog [CX20590 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jo 2697 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xf1520000 irq 45'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:14f1506e,17aa21da,00100002 HDA:80862805,80860101,00100000'
Controls : 43
Simple ctrls : 12
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
Mixer name : 'ThinkPad EC (unknown)'
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]
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=749609cc-8e4e-491e-9194-cbae6b309e18
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
Lsusb:
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b217 Chicony Electronics Co., Ltd
MachineType: LENOVO 4290W1A
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=/dev/mapper/vg_nova-ubuntu ro quiet splash nmi_watchdog=0 vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4
RelatedPackageVersions:
linux-restricted-modules-3.13.0-32-generic N/A
linux-backports-modules-3.13.0-32-generic N/A
linux-firmware 1.79.16
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Tags: precise
Uname: Linux 3.13.0-32-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adbusers adm cdrom dip lpadmin plugdev sambashare sudo vboxusers wireshark www-data
dmi.bios.date: 04/11/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET68WW (1.38 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4290W1A
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:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4290W1A:pvrThinkPadX220:rvnLENOVO:rn4290W1A:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4290W1A
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO |
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| 2014-07-20 20:35:02 |
jdillmann |
attachment added |
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AcpiTables.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158262/+files/AcpiTables.txt |
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| 2014-07-20 20:35:04 |
jdillmann |
attachment added |
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AlsaDevices.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158263/+files/AlsaDevices.txt |
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| 2014-07-20 20:35:05 |
jdillmann |
attachment added |
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AplayDevices.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158264/+files/AplayDevices.txt |
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| 2014-07-20 20:35:08 |
jdillmann |
attachment added |
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BootDmesg.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158265/+files/BootDmesg.txt |
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| 2014-07-20 20:35:10 |
jdillmann |
attachment added |
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Card0.Amixer.values.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158266/+files/Card0.Amixer.values.txt |
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| 2014-07-20 20:35:12 |
jdillmann |
attachment added |
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Card0.Codecs.codec.0.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158267/+files/Card0.Codecs.codec.0.txt |
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| 2014-07-20 20:35:14 |
jdillmann |
attachment added |
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Card0.Codecs.codec.3.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158268/+files/Card0.Codecs.codec.3.txt |
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| 2014-07-20 20:35:16 |
jdillmann |
attachment added |
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CurrentDmesg.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158269/+files/CurrentDmesg.txt |
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| 2014-07-20 20:35:18 |
jdillmann |
attachment added |
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IwConfig.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158270/+files/IwConfig.txt |
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| 2014-07-20 20:35:20 |
jdillmann |
attachment added |
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Lspci.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158271/+files/Lspci.txt |
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| 2014-07-20 20:35:22 |
jdillmann |
attachment added |
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PciMultimedia.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158272/+files/PciMultimedia.txt |
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| 2014-07-20 20:35:24 |
jdillmann |
attachment added |
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ProcCpuinfo.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158273/+files/ProcCpuinfo.txt |
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| 2014-07-20 20:35:25 |
jdillmann |
attachment added |
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ProcEnviron.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158274/+files/ProcEnviron.txt |
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| 2014-07-20 20:35:27 |
jdillmann |
attachment added |
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ProcInterrupts.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158275/+files/ProcInterrupts.txt |
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| 2014-07-20 20:35:29 |
jdillmann |
attachment added |
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ProcModules.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158276/+files/ProcModules.txt |
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| 2014-07-20 20:35:30 |
jdillmann |
attachment added |
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PulseList.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158277/+files/PulseList.txt |
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| 2014-07-20 20:35:34 |
jdillmann |
attachment added |
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UdevDb.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158278/+files/UdevDb.txt |
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| 2014-07-20 20:35:39 |
jdillmann |
attachment added |
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UdevLog.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158279/+files/UdevLog.txt |
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| 2014-07-20 20:35:43 |
jdillmann |
attachment added |
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WifiSyslog.txt https://bugs.launchpad.net/bugs/1345499/+attachment/4158280/+files/WifiSyslog.txt |
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| 2014-07-20 21:23:46 |
penalvch |
tags |
amd64 apport-bug apport-collected precise |
amd64 apport-bug apport-collected bios-outdated-1.39 trusty |
|
| 2014-08-28 20:19:08 |
benmhall |
bug |
|
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added subscriber benmhall |
| 2014-10-28 04:19:34 |
Launchpad Janitor |
linux (Ubuntu): status |
Incomplete |
Expired |
|
