Ubuntu
linux package

Backlight is not adjustable on HP 655 laptop

Bug #1054647 reported by Sasa Paporovic on 2012-09-22

This bug affects 3 people

Affects		Status	Importance	Assigned to	Milestone
	Linux	Won't Fix	Medium	linux-kernel-bugs #48731
	linux (Ubuntu)	Incomplete	Medium	Unassigned

Bug Description

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
---
ApportVersion: 2.7-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: user 2869 F.... pulseaudio
/dev/snd/controlC0: user 2844 F.... phoneuid
user 2869 F.... pulseaudio
DistroRelease: Ubuntu 13.04
HibernationDevice: RESUME=UUID=8bceb372-d432-423b-8584-7c87de9a2038
InstallationDate: Installed on 2012-07-22 (162 days ago)
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
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.7.0-7-generic root=UUID=90fd01e1-3896-4a96-babc-048fb146d8e0 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.7.0-7.15-generic 3.7.0
RelatedPackageVersions:
linux-restricted-modules-3.7.0-7-generic N/A
linux-backports-modules-3.7.0-7-generic N/A
linux-firmware 1.98
Tags: raring running-unity
Uname: Linux 3.7.0-7-generic x86_64
UpgradeStatus: Upgraded to raring on 2012-11-15 (46 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
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

See original description

Tags:

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

AcpiTables.txt Edit (301.0 KiB, text/plain; charset="utf-8")
AlsaInfo.txt Edit (28.1 KiB, text/plain; charset="utf-8")
BootDmesg.txt Edit (60.8 KiB, text/plain; charset="utf-8")
CRDA.txt Edit (257 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (16.9 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (2.8 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (546 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (13.5 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.8 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (4.6 KiB, text/plain; charset="utf-8")
PulseList.txt Edit (24.4 KiB, text/plain; charset="utf-8")
RfKill.txt Edit (118 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (112.6 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (265.8 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (39.0 KiB, text/plain; charset="utf-8")

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

proc_acpi Edit (995 bytes, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

ls_Sys_class_backlight Edit (42 bytes, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

acpidump.txt Edit (301.7 KiB, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

acpixtract_acpidump Edit (191 bytes, text/plain)

Brad Figg (brad-figg) on 2012-09-22

Changed in linux (Ubuntu):
status:	New → Confirmed

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

Found 1 external control methods, reparsing with new information Edit (456.5 KiB, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

redirects to results.log - attachingfollows Edit (50 bytes, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

results.log Edit (101.5 KiB, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

redirects to results.log- attaching follows Edit (49 bytes, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

#10

results.log Edit (144.1 KiB, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

#11

dmesg_grep_ACPI:Video Edit (110 bytes, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

#12

dmidecode.log Edit (9.2 KiB, text/plain)

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-22:

#13

cat_proc_version Edit (168 bytes, text/plain)

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Sasa Paporovic (melchiaros) wrote on 2012-09-22:

#14

I hope I have not missed something.

Sasa Paporovic (melchiaros) on 2012-09-23

description:

updated

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2012-09-24:

#15

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.6 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. Please only remove that one tag and leave the other tags. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-rc7-quantal/

Changed in linux (Ubuntu):
importance:	Undecided → Medium
status:	Confirmed → Incomplete
tags:	added: needs-upstream-testing

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-29:

#16

Tested with upstream kernel 3.6.rc7.

The bug exist also there.

tags:	removed: needs-upstream-testing
tags:	added: kernel-bug-exists-upstream
Changed in linux (Ubuntu):
status:	Incomplete → Confirmed

Sasa Paporovic (melchiaros) on 2012-09-29

tags:	added: apport-collected
description:	updated

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-09-29:

#17

If the next step is upstream reporting. Could you give me some hints what to include for a backlight bug? The same procedure as performed following the Ubuntu guide?

https://wiki.ubuntu.com/Kernel/Debugging/Backlight

Is there a step that can be performed before? I have on internet search sometimes seen boot option cahnges like using vendor driver for backlight.

A very similiar can be fould here:

https://wiki.ubuntu.com/Kernel/Debugging/Backlight#Disabling_the_ACPI_backlight_driver

I am missing in this guide just the hint, where to edit the boot parameters, which has prevendt me from performing this. May be this should be included in the guide.

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-10-06:

#18

ping

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2012-10-10:

#19

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

Changed in linux (Ubuntu):
status:	Confirmed → Triaged

Revision history for this message

Joseph Salisbury (jsalisbury) wrote on 2012-10-10:

#20

The v3.6 final kernel is now available as well[0]. You could also test that kernel to confirm the bug still exists upstream.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-quantal/

Sasa Paporovic (melchiaros) on 2012-10-13

description:

updated

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2012-10-13:

#21

Tested with kernel 3.6.2 -> issue is still there.

Bug Watch Updater (bug-watch-updater) on 2012-10-13

Changed in linux:
importance:	Unknown → Medium
status:	Unknown → Confirmed

Bug Watch Updater (bug-watch-updater) on 2012-11-28

Changed in linux:
status:	Confirmed → Incomplete

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01:

#22

Joseph,

I have here a kind of mystic.

I have just restarted my system.

Now it is able at random to switch trough the values for the backlight.

Everytime I strike a key it goes go maximum, when I wait some seconds it is going down the values step my step, until the monitor is black.

I am since some weeks on raring.

There was no special bughandling on linux bugtracker upstream.

This is the first time I observe this behaviour. The only things that have changed are a actualisation of libfree...? from yesterday, and I have installed some alien packages(converted with alien to .deb) which are color associated.

cinepaint-0.25-14.2.x86_64.rpm
liboyranos0-0.9.1-33.1.x86_64.rpm
libXcm0-0.5.1-21.1.x86_64.rpm

all from

http://download.opensuse.org/repositories/medical/openSUSE_12.2/x86_64/

There where also some trouble with mounting during this reboot(have not seen exactly).
-------------------------------------------
Anyway of the long story, the kernel3.7.0ubuntu flavor seems to be able to control the backlight in any random way.

tags:	added: raring
description:	updated

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: AlsaInfo.txt

#23

AlsaInfo.txt Edit (28.6 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: BootDmesg.txt

#24

BootDmesg.txt Edit (56.9 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: CRDA.txt

#25

CRDA.txt Edit (257 bytes, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: CurrentDmesg.txt

#26

CurrentDmesg.txt Edit (30.9 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: IwConfig.txt

#27

IwConfig.txt Edit (543 bytes, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: Lspci.txt

#28

Lspci.txt Edit (13.3 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: ProcCpuinfo.txt

#29

ProcCpuinfo.txt Edit (1.8 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: ProcInterrupts.txt

#30

ProcInterrupts.txt Edit (1.5 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: ProcModules.txt

#31

ProcModules.txt Edit (4.8 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: PulseList.txt

#32

PulseList.txt Edit (21.3 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: RfKill.txt

#33

RfKill.txt Edit (118 bytes, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: UdevDb.txt

#34

UdevDb.txt Edit (112.8 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: UdevLog.txt

#35

UdevLog.txt Edit (268.3 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01: WifiSyslog.txt

#36

WifiSyslog.txt Edit (1011.1 KiB, text/plain)

apport information

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-01:

#37

kernel log Edit (1018.5 KiB, text/plain)

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Sasa Paporovic (melchiaros) wrote on 2013-01-01:

#38

syslog Edit (1.6 MiB, text/plain)

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Stefan Weiser (stefan-weiser) wrote on 2013-01-03:

#39

I fixed it by using fglrx. Then it can change backlight, but now there are some suspend issues (freeze when suspending or freeze at wakeup).

Revision history for this message

Sasa Paporovic (melchiaros) wrote on 2013-01-12:

#40

Still there with linux-generic 3.8rc3

Bug Watch Updater (bug-watch-updater) on 2013-04-09

Changed in linux:
status:	Incomplete → Won't Fix

Revision history for this message

penalvch (penalvch) wrote on 2013-11-19:

#41

Sasa Paporovic, as per http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/swdHome/?sp4ts.oid=5225019&spf_p.tpst=swdMain&spf_p.prp_swdMain=wsrp-navigationalState%3DswEnvOID%253D4063%257CswLang%253D%257Caction%253DlistDriver&javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken#BIOS an update is available for your BIOS (F.26). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Thank you for your understanding.