https://bugzilla.kernel.org/show_bug.cgi?id=48731
Summary: Backlight is not adjustable on HP 655 laptop
Product: ACPI
Version: 2.5
Kernel Version: Linux version 3.6.2-030602-generic (apw@gomeisa) (gcc
version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) )
#201210121823 SMP Fri Oct 12 22:24:18 UTC 2012
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
I could not adjust the backlite of my HP 655 laptop.
Original vendor website:
http://h10010.www1.hp.com/wwpc/us/en/sm/WF05a/321957-321957-64295-3740644-3955548-5225017.html?dnr=1
The gnome-brightness applet is startable and the keys for brightness adjustment
(F2 for less and F3 for more) are recognized by the system and can set the
Software values, but also there is no real effect.
A check of
/sys/class/backlight
shows a redirect to
acpi_video0
which contains different entries like files for brightness.
So it is a bug of the type: "Backlight control does not work, but there are
entries in /sys/class/backlight"
The laptop was originally delivered with a SUSE Linux Enterprise desktop 11 on
Service Pack 2, which has contained kernel 3.0.x. On this kernel version the
Backlight was working. Unfortunally the SLED 11 SP2 was a obvious adapted one
by HP with poperitary Software components. Following this the vanilla 3.0.x
kernel may also not be able to handle the backlight with success.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-15-generic 3.5.0-15.22
ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user 2468 F.... pulseaudio
/dev/snd/controlC0: user 2468 F.... pulseaudio
Date: Sat Sep 22 18:01:28 2012
HibernationDevice: RESUME=UUID=8bceb372-d432-423b-8584-7c87de9a2038
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120722)
Lsusb:
Bus 001 Device 002: ID 04f2:b2f4 Chicony Electronics Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Hewlett-Packard HP 655 Notebook PC
ProcEnviron:
PATH=(custom, no username)
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-15-generic
root=UUID=90fd01e1-3896-4a96-babc-048fb146d8e0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.5.0-15-generic N/A
linux-backports-modules-3.5.0-15-generic N/A
linux-firmware 1.93
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/27/2012
dmi.bios.vendor: Insyde
dmi.bios.version: F.02
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1885
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 66.11
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsyde:bvrF.02:bd04/27/2012:svnHewlett-Packard:pnHP655NotebookPC:pvr0798100000005210002600000:rvnHewlett-Packard:rn1885:rvr66.11:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP 655 Notebook PC
dmi.product.version: 0798100000005210002600000
dmi.sys.vendor: Hewlett-Packard
---
ApportVersion: 2.5.3-0ubuntu1
Architecture: amd64
DistroRelease: Ubuntu 12.10
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120722)
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=de_DE.UTF-8
SHELL=/bin/bash
Tags: quantal running-unity
Uname: Linux 3.6.0-030600rc7-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
---
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
DistroRelease: Ubuntu 12.10
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120722)
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
Tags: quantal running-unity
Uname: Linux 3.6.2-030602-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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