Can't Manage Brightness OpenSuSe 12.2

kevingcfcb88 · September 20, 2012, 5:37pm

Hi… I Have a Dell Inspiron N4010 i3… But i can’t down the brightness with the Fn key… The animation appears in the screen but can’t downgrade… I already tried addin to the end line of grub:

acpi_osi=Linux

acpi_osi=linux

acpi_backlight=vendor

I already tried with xbacklight, and sendind with echo the value to specific files… And nothing work…

I use this:

uname -a
Linux santoryu.site 3.4.6-2.10-desktop #1 SMP PREEMPT Thu Jul 26 09:36:26 UTC 2012 (641c197) x86_64 x86_64 x86_64 GNU/Linux

And…

 hwinfo  --gfxcard
09: PCI 02.0: 0300 VGA compatible controller (VGA)              
  [Created at pci.319]
  Unique ID: _Znp.TfExTsk1yK7
  SysFS ID: /devices/pci0000:00/0000:00:02.0
  SysFS BusID: 0000:00:02.0
  Hardware Class: graphics card
  Model: "Intel Arrandale Integrated Graphics Controller"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x0046 "Arrandale Integrated Graphics Controller"
  SubVendor: pci 0x1028 "Dell"
  SubDevice: pci 0x0456 
  Revision: 0x18
  Driver: "i915"
  Driver Modules: "drm"
  Memory Range: 0xf0000000-0xf03fffff (rw,non-prefetchable)
  Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable)
  I/O Ports: 0x1800-0x1807 (rw)
  IRQ: 41 (58945 events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v00008086d00000046sv00001028sd00000456bc03sc00i00"
  Driver Info #0:
    Driver Status: i915 is active
    Driver Activation Cmd: "modprobe i915"
  Config Status: cfg=no, avail=yes, need=no, active=unknown

Primary display adapter: #9

And…

lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18)

Can anybody help me???

user · September 20, 2012, 7:03pm

i see lots and lots of folks (using a wide variety of distros) are
having trouble with that hardware, review here:
http://tinyurl.com/cqpzjej

unfortunately you might have to bite the bullet and accept the screen
brightness you get, or use the OS the machine shipped with (which linux
distro was that?)

on the other hand:

> I already tried addin to the end line of grub:
> acpi_osi=Linux
> acpi_osi=linux
> acpi_backlight=vendor

did you try all of those at the same time, or one at a time? or in
various combinations?

do the Dell forums have any ideas? (there are plenty of Linux gurus
working in Dell)

–
dd

kevingcfcb88 · September 21, 2012, 4:55am

on the other hand:

> I already tried addin to the end line of grub:
> acpi_osi=Linux
> acpi_osi=linux
> acpi_backlight=vendor

did you try all of those at the same time, or one at a time? or in
various combinations?

Yes i tried in every way, and no one works, i search and search for 1 week aproximadetely and nohting works… Help me please! I am almost blind!!

malcolmlewis · September 21, 2012, 5:07am

Hi
I’m running a DELL Latitude E5510 with GNOME Desktop, brightness
controls are working fine.

What output do you get from;


lsmod |grep dell

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 12.2 (x86_64) Kernel 3.4.6-2.10-desktop
up 3 days 10:57, 4 users, load average: 0.75, 0.63, 0.61
CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU

deano_ferrari · September 21, 2012, 7:58am

@kevingcfcb88: I’m interested to know which desktop environment you’re using

I updated my HP 6710b laptop to openSUSE 12.2, KDE 4.8.5, recently and found that my Fn+F9 and Fn_F10 brightness hotkeys were not responsive any more. I checked the loaded modules to make sure that hp_wmi was loaded. (All was good there).

Anyway, my quick workaround for now was

System Settings >> Shortcuts and Gestures >> Global Keyboard Shortcuts, then selected KDE Daemon. From there I added Ctrl+F9 (for decrease screen brightness) and Ctrl+F10 (for increase…)

Jut in case this helps another who comes looking…

SirLoin · September 22, 2012, 10:04pm

FWIW: I found this thread that solved the screen brightness controls on my Lenovo W520: [http://forums.opensuse.org/english/get-technical-help-here/laptop/470798-scr
een-brightness-not-changing-12-1-thinkpad.html](http://forums.opensuse.org/english/get-technical-help-here/laptop/470798-scr een-brightness-not-changing-12-1-thinkpad.html)

Specifically, I added the following lines to my /etc/X11/xorg.conf.d/50-device.conf

Having multiple “Device” sections is known to be problematic. Make

sure you don’t have in use another one laying around e.g. in another

xorg.conf.d file or even a generic xorg.conf file. More details can

be found in https://bugs.freedesktop.org/show_bug.cgi?id=32430.

Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
Option “RegistryDwords” “EnableBrightnessControl=1”
EndSection

So maybe adding the appropriate HW info for your computer will do the trick…

deano_ferrari · September 23, 2012, 1:05am

@SirLoin: That solution is only applicable for nvidia cards, and specifically, it is the ‘Option “RegistryDwords” “EnableBrightnessControl=1”’ that does the jub in this case. No such equivalent for the Intel hardware.

kevingcfcb88 · September 23, 2012, 5:59pm

[QUOTE=malcolmlewis;2488983]Hi
I’m running a DELL Latitude E5510 with GNOME Desktop, brightness
controls are working fine.

What output do you get from;


lsmod |grep dell

This is my output… I’m using XFCE


lsmod |grep dell
dell_wmi               12681  0 
sparse_keymap     13890  1 dell_wmi
dell_laptop            18063  0 
rfkill                      26009  7 bluetooth,cfg80211,wimax,dell_laptop
wmi                      19070  1 dell_wmi
dcdbas                 14881  1 dell_laptop

phil995511 · October 21, 2012, 4:48pm

I have a similar problem on my vaio… brightness with Fn key not woork

PiElle · October 21, 2012, 9:12pm

@ kevingcfcb88](http://forums.opensuse.org/members/kevingcfcb88.html)
The correct kernel parameter should be acpi_backlight=vendor acpi_osi=Linux.
Add it to the end of the GRUB_CMDLINE_LINUX variable in the /etc/default/grub file.
Then run the* grub2-mkconfig -o /boot/grub2/grub.cfg* command …

kevingcfcb88 · October 24, 2012, 6:27am

I add that to the en this 2 variables, in every option of order possible…

GRUB_CMDLINE_LINUX
GRUB_CMDLINE_LINUX_DEFAULT

And nothing seems to work… I begin to see very blur after a time…

Exist a factible solution or no???

franck210883 · November 6, 2012, 8:23pm

Thank you **kevingcfcb88. **When I changed the brightness (through the battery icon or through the “Fn” button) it used to lag for a few minutes. Then I did what you said and now the brightness won’t change at all, there is just no reaction.

I have opensuse 12.2 KDE 4.8.5 (4.8.5) “release 2” on an Acer Aspire 5730Z.
Any idea ?

chris2kari · November 9, 2012, 11:53pm

***EUREKA!!! ***

I have a Toshiba Satellite L730.
The FN F6 / F7 keys for screen brightness have never worked under any Linux until now.
Thank you for posting the *correct *magic incantation.
I have spent months of googling and asking in forums.
I can confirm that it now works for me but :

I had to complete shutdown/cold start before it worked (warm restart seems to not work… weird).
On KDE version of OpenSUSE 12.2 wait until desktop is finished initialising before
trying to use the FN key.

This problem has come about because Toshiba & other vendors have changed their BIOS firmware in non standard ways & refuse to share the info with anyone except Micro$oft.
Toshibe used to have good support for Linux but have dropped it.
I would advise against buying Toshiba laptops now. I certainly will not be again.
HP & IBM still seem to be the best.

Anyway, thank you for sharing.
By the way where would I find the information leading to this knowledge?

I am a new user to OpenSUSE, very pleased with the KDE version & OpenSUSE in general.
I would say excellent hardware support & application packaging combined with the unbeatable ease of use with Yast.
Gosh I wish I had know about this distro sooner, would have saved me months of wasted time.

Cheers!
Chris

chris2kari · November 9, 2012, 11:54pm

***EUREKA!!! ***

I have a Toshiba Satellite L730.
The FN F6 / F7 keys for screen brightness have never worked under any Linux until now.
Thank you for posting the *correct *magic incantation.
I have spent months of googling and asking in forums.
I can confirm that it now works for me but :

I had to complete shutdown/cold start before it worked (warm restart seems to not work… weird).
On KDE version of OpenSUSE 12.2 wait until desktop is finished initialising before
trying to use the FN key.

This problem has come about because Toshiba & other vendors have changed their BIOS firmware in non standard ways & refuse to share the info with anyone except Micro$oft.
Toshibe used to have good support for Linux but have dropped it.
I would advise against buying Toshiba laptops now. I certainly will not be again.
HP(Compaq) & IBM still seem to be the best bet.

Anyway, thank you for sharing.
By the way where would I find the information leading to this knowledge?

I am a new user to OpenSUSE, very pleased with the KDE version & OpenSUSE in general.
I would say excellent hardware support & application packaging combined with the unbeatable ease of use with Yast.
Gosh I wish I had know about this distro sooner, would have saved me months of wasted time.

Cheers!
Chris

untarnished · February 14, 2013, 11:42am

I’m using a new Dell Inspiron 7520 with AMD Radeon HD 7730M graphics card, and had to run

grub2-efi-mkconfig -o /boot/grub2-efi/grub.cfg

because I’m using GRUB2-EFI.

Still can’t adjust the brightness using Fn+F4 and Fn+F5. Any other ideas?

Romanator · February 17, 2013, 10:27pm

Please read answer on https://forums.opensuse.org/english/get-technical-help-here/laptop/482856-display-brightness-cannot-changed-opensuse-12-2-dell-inspiron-7520-a.html