CID: 201201-10378 Dell Inspiron 5520
Like bug 1231305, the grub tweak: acpi_osi=\"!Windows 2012\"
in comment #29 of that bug works, But the kernel in comment #31 does not.
I opened this one since this is a model specific bug.
The brightness hot key event was correctly captured, but the brightness level
indicator only changes between Max, Max - 1, and brightness cannot be adjusted.
It can't be adjusted in system settings as well.
Result from dmidecode attached.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.8.0-31-generic 3.8.0-31.46~precise1
ProcVersionSignature: Ubuntu 3.8.0-31.46~precise1-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.8.0-31-generic.
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1653 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xa1610000 irq 46'
Mixer name : 'Intel PantherPoint HDMI'
Components : 'HDA:14f1506e,1028056a,00100002 HDA:80862806,80860101,00100000'
Controls : 29
Simple ctrls : 11
Date: Wed Nov 6 15:43:38 2013
HibernationDevice: RESUME=UUID=8514ec27-f7c7-4242-b4e5-09c6684eda75
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
MachineType: Dell Inc. Inspiron 5520
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
0 inteldrmfb
1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic root=UUID=1e3fc128-0792-4c4f-9e37-3a4c71117d9b ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-31-generic N/A
linux-backports-modules-3.8.0-31-generic N/A
linux-firmware 1.79.6
SourcePackage: linux-lts-raring
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: X42
dmi.board.name: 011216
dmi.board.vendor: Dell Inc.
dmi.board.version: X02
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: X42
dmi.modalias: dmi:bvnDellInc.:bvrX42:bd07/18/2012:svnDellInc.:pnInspiron5520:pvrX42:rvnDellInc.:rn011216:rvrX02:cvnDellInc.:ct8:cvrX42:
dmi.product.name: Inspiron 5520
dmi.product.version: X42
dmi.sys.vendor: Dell Inc.
Note: this bug did not happen on this system with 12.04.2 (3.5 kernel)