- Running Ubuntu 12.10 amd64.
- Newest BIOS installed.
- Problem belongs to third group (as defined in https://wiki.ubuntu.com/Kernel/Debugging/Backlight): "Backlight control does not work, but there are entries in /sys/class/backlight."
- Neither fn+left/right nor system tools brightness control works. Adding "acpi_backlight=vendor" to bootparams fixes the problem.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-19-generic 3.5.0-19.30
ProcVersionSignature: Ubuntu 3.5.0-19.30-generic 3.5.7
Uname: Linux 3.5.0-19-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: diskdoc 2728 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Sat Dec 8 01:16:24 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=11efe0be-9f52-4ee5-ae6c-7e025de38353
InstallationDate: Installed on 2010-06-07 (914 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
MachineType: Acer Aspire 3820
MarkForUpload: True
ProcFB:
0 inteldrmfb
1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-19-generic root=UUID=8b7cae99-dae3-4d14-bbd3-24f82a9e0b57 ro quiet splash rootflags=data=writeback acpi_backlight=vendor vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-19-generic N/A
linux-backports-modules-3.5.0-19-generic N/A
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-12-05 (2 days ago)
dmi.bios.date: 10/27/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.19
dmi.board.asset.tag: No Asset Tag
dmi.board.name: JM31_CP
dmi.board.vendor: Acer
dmi.board.version: V1.19
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.19
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.19:bd10/27/2010:svnAcer:pnAspire3820:pvrV1.19:rvnAcer:rnJM31_CP:rvrV1.19:cvnAcer:ct10:cvrV1.19:
dmi.product.name: Aspire 3820
dmi.product.version: V1.19
dmi.sys.vendor: Acer
- Running Ubuntu 12.10 amd64. /wiki.ubuntu. com/Kernel/ Debugging/ Backlight): "Backlight control does not work, but there are entries in /sys/class/ backlight. " =vendor" to bootparams fixes the problem.
- Newest BIOS installed.
- Problem belongs to third group (as defined in https:/
- Neither fn+left/right nor system tools brightness control works. Adding "acpi_backlight
ProblemType: Bug 3.5.0-19- generic 3.5.0-19.30 ature: Ubuntu 3.5.0-19.30-generic 3.5.7 dules: wl controlC0: diskdoc 2728 F.... pulseaudio UUID=11efe0be- 9f52-4ee5- ae6c-7e025de383 53 /boot/vmlinuz- 3.5.0-19- generic root=UUID= 8b7cae99- dae3-4d14- bbd3-24f82a9e0b 57 ro quiet splash rootflags= data=writeback acpi_backlight= vendor vt.handoff=7 ersions: restricted- modules- 3.5.0-19- generic N/A backports- modules- 3.5.0-19- generic N/A asset.tag: No Asset Tag asset.tag: No Asset Tag version: V1.19 echnologiesLTD: bvrV1.19: bd10/27/ 2010:svnAcer: pnAspire3820: pvrV1.19: rvnAcer: rnJM31_ CP:rvrV1. 19:cvnAcer: ct10:cvrV1. 19: version: V1.19
DistroRelease: Ubuntu 12.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.5.0-19-generic x86_64
NonfreeKernelMo
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Sat Dec 8 01:16:24 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationDate: Installed on 2010-06-07 (914 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
MachineType: Acer Aspire 3820
MarkForUpload: True
ProcFB:
0 inteldrmfb
1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: Upgraded to quantal on 2012-12-05 (2 days ago)
dmi.bios.date: 10/27/2010
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.19
dmi.board.
dmi.board.name: JM31_CP
dmi.board.vendor: Acer
dmi.board.version: V1.19
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.
dmi.modalias: dmi:bvnPhoenixT
dmi.product.name: Aspire 3820
dmi.product.
dmi.sys.vendor: Acer