Public bug reported:
I followed the steps at https://wiki.ubuntu.com/Hotkeys/Troubleshooting
and found that the brightness keys are only detected with acpi_listen,
which apparently means "this is a bug in the kernel (ubuntu-bug linux)
for not translating the ACPI event to an input event"
Brightness down and up create the following output with acpi_listen,
respectively:
button/battery BAT 00000080 00000000 K
button/sleep SBTN 00000080 00000000 K
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified:
boot/vmlinuz-3.13.0-24-generic]
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: drdanielfc 1816 F.... pulseaudio
/dev/snd/controlC1: drdanielfc 1816 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Jun 3 18:34:43 2014
HibernationDevice: RESUME=UUID=5749c544-7f19-4560-85cf-afb651d8e76f
InstallationDate: Installed on 2014-06-03 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: TOSHIBA Satellite P70-A
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed
root=UUID=b07e9797-ecf0-4bfd-a13c-1f1c53c509f1 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-24-generic N/A
linux-backports-modules-3.13.0-24-generic N/A
linux-firmware 1.127
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/18/2014
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: 1.50
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Type2 - Board Product Name1
dmi.board.vendor: Type2 - Board Vendor Name1
dmi.board.version: Type2 - Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias:
dmi:bvnInsydeCorp.:bvr1.50:bd04/18/2014:svnTOSHIBA:pnSatelliteP70-A:pvrPSPLPU-0JS050:rvnType2-BoardVendorName1:rnType2-BoardProductName1:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: Satellite P70-A
dmi.product.version: PSPLPU-0JS050
dmi.sys.vendor: TOSHIBA
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1326161
Title:
Toshiba Satellite Brightness Hotkey Doesn't Work
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