Public bug reported:
Using the default ati open source driver hotkeys are not working, echo
commands are not working but files exist in sys/class/backlight.
I used acpi_backlight=vendor , legacy and also the
video.use_bios_initial_backlight=0 with no effect.
I am using ubuntu 12.10 all latest upgrades.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-21-generic 3.5.0-21.32
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: micdhack 1643 F.... pulseaudio
/dev/snd/controlC0: micdhack 1643 F.... pulseaudio
Date: Wed Dec 26 13:40:51 2012
HibernationDevice: RESUME=UUID=b9ded35c-c251-435b-898e-e2827835b63a
InstallationDate: Installed on 2012-12-25 (0 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: Sony Corporation SVE1112M1EW
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-21-generic.efi.signed
root=UUID=ff2bb0f9-b45a-4e72-871e-9463d0ab0c66 ro quiet splash acpi_osi=Linux
acpi_backlight=legacy vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-21-generic N/A
linux-backports-modules-3.5.0-21-generic N/A
linux-firmware 1.95
SourcePackage: linux
StagingDrivers: rts_pstor
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/22/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: R0120D8
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnInsydeCorp.:bvrR0120D8:bd08/22/2012:svnSonyCorporation:pnSVE1112M1EW:pvrC60B8NZ6:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: SVE1112M1EW
dmi.product.version: C60B8NZ6
dmi.sys.vendor: Sony Corporation
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug quantal running-unity staging
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1093795/+attachment/3468155/+files/acpidump.txt
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https://bugs.launchpad.net/bugs/1093795
Title:
Backlight does not work on sony vaio sve1112
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