Ubuntu
linux package

Cannot change brightness in HP 6735s using hotkeys

Bug #603875 reported by Tommy_CZ on 2010-07-10

This bug affects 4 people

Affects		Status	Importance	Assigned to	Milestone
	linux (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

Hi, I upgraded kernel in kubuntu 10.04 to 2.6.32-23 and from that, the brightness cannot be changed. In 2.6.32-23 it was ok...
Thanks :o)

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-23-generic 2.6.32-23.37
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic x86_64
NonfreeKernelModules: wl fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: januli 2004 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0x94400000 irq 16'
   Mixer name : 'Analog Devices AD1984A'
   Components : 'HDA:11d4194a,103c3613,00100400 HDA:11c11040,103c1378,00100200'
   Controls : 18
   Simple ctrls : 11
Date: Sat Jul 10 08:47:02 2010
HibernationDevice: RESUME=/dev/sda5
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic root=UUID=a9b40f16-8179-4500-9169-e4da2d52826f ro quiet splash
ProcEnviron:
LANGUAGE=
PATH=(custom, no user)
LANG=cs_CZ.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
1: hci0: Bluetooth
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 03/05/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68GPP Ver. F.09
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 30E4
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 94.1E
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68GPPVer.F.09:bd03/05/2009:svnHewlett-Packard:pn:pvrF.09:rvnHewlett-Packard:rn30E4:rvrKBCVersion94.1E:cvnHewlett-Packard:ct10:cvr:
dmi.product.version: F.09
dmi.sys.vendor: Hewlett-Packard

Tags:

Revision history for this message

Tommy_CZ (t-kijas) wrote on 2010-07-10:

AlsaDevices.txt Edit (459 bytes, text/plain; charset="utf-8")
BootDmesg.txt Edit (45.9 KiB, text/plain; charset="utf-8")
Card0.Amixer.values.txt Edit (2.4 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.0.txt Edit (9.1 KiB, text/plain; charset="utf-8")
Card0.Codecs.codec.1.txt Edit (141 bytes, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (38.9 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (1.3 KiB, text/plain; charset="utf-8")
IwConfig.txt Edit (280 bytes, text/plain; charset="utf-8")
Lspci.txt Edit (13.9 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (610 bytes, text/plain; charset="utf-8")
PciMultimedia.txt Edit (584 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 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")
UdevDb.txt Edit (108.0 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (247.3 KiB, text/plain; charset="utf-8")
WifiSyslog.txt Edit (21.7 KiB, text/plain; charset="utf-8")

Mohamed Amine Ilidrissi (ilidrissi.amine) on 2010-07-10

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

Revision history for this message

Mohamed Amine Ilidrissi (ilidrissi.amine) wrote on 2010-07-10:

Can you test the mainline kernel to see if the issue exists upstream? You can see how to test it here: https://wiki.ubuntu.com/KernelTeam/MainlineBuilds

Also, does the brightness change with the brightness applet? Try adding the brightness applet to your panel and changing the brightness, so we can see if it is a backlight issue or a hotkey issue.

Revision history for this message

Tommy_CZ (t-kijas) wrote on 2010-07-11:

Hi, it's hotkey issue (despite of that the keys e.g. for volume works), the change of brightness in Power manager (KDE4.5) is possible

The kernel 2.6.32-16 doesn't help, I will try more bleeding-edge kernel and report here.

Revision history for this message

Tommy_CZ (t-kijas) wrote on 2010-07-11:

correction: 2.6.32.16

Revision history for this message

Mohamed Amine Ilidrissi (ilidrissi.amine) wrote on 2010-07-11:

Can you change the brightness using hotkeys in a text console (Ctrl+Alt+F1)?

summary:

- cannot change brightness in HP 6735s
+ Cannot change brightness in HP 6735s using hotkeys

Revision history for this message

Icek (petr-mahdalicek) wrote on 2010-07-19:

I have the same problem, switch to text console doesn't help. With fglrx hotkeys works fine.

Revision history for this message

Mohamed Amine Ilidrissi (ilidrissi.amine) wrote on 2010-07-19:

@Icek: it seems that the bug has nothing to do with fglrx, since Tommy_CZ also have fgrlx, and yet his hotkeys doesn't work.

Revision history for this message

Kerry Billingham (y-launchpad-avionicengineers-com) wrote on 2010-07-24:

I can confirm this defect and add the following information.

Without using the proprietary driver (ATI/AMD FGLRX), the brightness UP and brightness DOWN pop up the brightness window but DO NOT alter the brightness. I can alter the brightness via the gnome applet

If I use the propietary driver then the buttons do not work and I cannot alter brightness via the gnome applet.

Revision history for this message

Rik Rasmussen (rikrasmussen) wrote on 2011-06-03:

Having same problem with 6735S running 11.04.

Revision history for this message

lenu (osynligaddress) wrote on 2011-11-14:

#10

having same problem with hp 6735s running ubuntu 11.10.

Revision history for this message

penalvch (penalvch) wrote on 2012-03-24:

#11

Tommy_CZ, thank you for reporting this and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please provide the results of following https://wiki.ubuntu.com/Kernel/Debugging/Backlight ? As well, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux <replace-with-bug-number>

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. 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. Please let us know your results.

Thanks in advance.

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

Revision history for this message

Tommy_CZ (t-kijas) wrote on 2012-04-17:

#12

The new BIOS resolved it. Thank you.

Changed in linux (Ubuntu):
status:	Incomplete → Fix Released

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Cannot change brightness in HP 6735s using hotkeys

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