Public bug reported:
I couldn't get the backlight to work after I upgraded to 13.04. I tried
changing the grub parameters, and after several trys, nothing. I was
asked to run grep . /sys/class/backlight/*/* and got the results of:
maxo@Dayman:~$ grep . /sys/class/backlight/*/*
/sys/class/backlight/acpi_video0/actual_brightness:9
/sys/class/backlight/acpi_video0/bl_power:0
/sys/class/backlight/acpi_video0/brightness:9
grep: /sys/class/backlight/acpi_video0/device: Is a directory
/sys/class/backlight/acpi_video0/max_brightness:9
grep: /sys/class/backlight/acpi_video0/power: Is a directory
grep: /sys/class/backlight/acpi_video0/subsystem: Is a directory
/sys/class/backlight/acpi_video0/type:firmware
/sys/class/backlight/intel_backlight/actual_brightness:976
/sys/class/backlight/intel_backlight/bl_power:0
/sys/class/backlight/intel_backlight/brightness:976
grep: /sys/class/backlight/intel_backlight/device: Is a directory
/sys/class/backlight/intel_backlight/max_brightness:976
grep: /sys/class/backlight/intel_backlight/power: Is a directory
grep: /sys/class/backlight/intel_backlight/subsystem: Is a directory
/sys/class/backlight/intel_backlight/type:raw
The only grub lines that seem to work are these:
GRUB_CMDLINE_LINUX="acpi_osi=Linux acpi_backlight=vendor"
GRUB_CMDLINE_LINUX="acpi_osi="
But using the Fn Keys, you can only adjust it a little, like from full
brightness to about half. To add something else, with the other
parameters when I adjust with the Fn Keys, the brightness bubble you get
on the top right of your screen doesn't appear.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-19-generic 3.8.0-19.29 [modified:
boot/vmlinuz-3.8.0-19-generic]
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: maxo 2482 F.... pulseaudio
Date: Sun Apr 28 07:01:21 2013
HibernationDevice: RESUME=UUID=f71ed279-badf-446b-afc6-d5a75316ec0a
InstallationDate: Installed on 2013-04-25 (2 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: Gateway NV55C
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-19-generic
root=UUID=bc22ba4b-fcd9-46f3-b10a-11477dd4f618 ro acpi_osi=
acpi_backlight=vendor quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-19-generic N/A
linux-backports-modules-3.8.0-19-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2011
dmi.bios.vendor: Gateway
dmi.bios.version: V1.24
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NV55C
dmi.board.vendor: Gateway
dmi.board.version: V1.24
dmi.chassis.type: 10
dmi.chassis.vendor: Gateway
dmi.chassis.version: V1.24
dmi.modalias:
dmi:bvnGateway:bvrV1.24:bd08/10/2011:svnGateway:pnNV55C:pvrV1.24:rvnGateway:rnNV55C:rvrV1.24:cvnGateway:ct10:cvrV1.24:
dmi.product.name: NV55C
dmi.product.version: V1.24
dmi.sys.vendor: Gateway
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug raring
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1173961
Title:
Two backlight interfaces that wont adjusst backlight.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173961/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
