LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices



Reply
 
Search this Thread
Old 05-17-2012, 11:49 PM   #1
CW_OP
LQ Newbie
 
Registered: May 2012
Location: Newcastle, Wa.
Distribution: Slackware 13.37
Posts: 11

Rep: Reputation: Disabled
Fn key does not control backlight on Acer Aspire One D270-1410


I installed Slackware 13.37 on a Acer Aspire One D270-1410.
The Fn + Left or Right arrow should adjust screen brightness.
In KDE or Xfce the screen brightness controls do not work.
However the brightness graph does come up on the screen in KDE.

I went into system settings,shortcuts and gestures,global keyboard shortcuts, and set the monitor brightness key settings in custom option. However this did not work.

I have a INTEL VGA graphics controller. I tried xbacklight -set 50 on the command line but it did nothing.
Any ideas?
 
Old 05-18-2012, 01:13 AM   #2
Babertje
Member
 
Registered: Jun 2009
Location: Haarlem, The Netherlands
Distribution: Archlinux
Posts: 125

Rep: Reputation: 20
boot/reboot your laptop open bootloader in edit-mode ( e on grub ) and insert "acpi_backlight=vendor" (without quotes) at the kernel line
 
1 members found this post helpful.
Old 05-18-2012, 10:02 PM   #3
CW_OP
LQ Newbie
 
Registered: May 2012
Location: Newcastle, Wa.
Distribution: Slackware 13.37
Posts: 11

Original Poster
Rep: Reputation: Disabled
I am new to linux i have never messed with boot loader.

Thanks for your reply I looked at the lilo boot loader section in the slackbook website. It mentions running liloconfig or editing the /etc/lilo.conf file and running lilo to save your changes.

Is this what you meant by boot loader?

And should i replace "acpi_backlight=vendor" with "acpi_backlight=Acer" since thats my vendor?
 
Old 05-19-2012, 07:07 AM   #4
san
Member
 
Registered: Jan 2006
Location: vienna, .at
Distribution: Slackware64 13.37
Posts: 50

Rep: Reputation: 12
"vendor" should be sufficient, see https://bbs.archlinux.org/viewtopic.php?id=74829

reboot your machine, once the lilo screen appears hit <TAB>, then enter
Code:
$LABEL acpi_backlight=vendor
LABEL will be something like Linux, Slackware, 3.3.5 or whatever is displayed at the top of the screen.

in case it works, edit /etc/lilo.conf; adding a line containing
Code:
append="acpi_backlight=vendor"
if there already is such a line, just add the parameter.

save and run /sbin/lilo; then reboot.

Last edited by san; 05-19-2012 at 07:13 AM.
 
1 members found this post helpful.
Old 05-19-2012, 08:25 AM   #5
onebuck
Moderator
 
Registered: Jan 2005
Location: Midwest USA, Central Illinois
Distribution: SlackwareŽ
Posts: 11,446
Blog Entries: 4

Rep: Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505Reputation: 1505
Member response

Hi,

I will add that you should be cautious by the use of 'append' within a image stanza;
Quote:
excerpt from 'man lilo.conf';
KERNEL OPTIONS (image=)
If the booted image is a Linux kernel, then one may pass command line parameters to this kernel.

addappend=<string>
(22.6) The kernel parameters from the specified string, are concatenated to the parameter(s) from an append= specification (see
below). The string must be enclosed within double quotes. Usually, the previous append= will specify parameters common to all
kernels by appearing in the top, or global, section of the configuration file and addappend= will be used to add local parameter(s)
to an individual image. Addappend= may be used only once per "image=" section.

append=<string>
Appends the options specified to the parameter line passed to the kernel. This is typically used to specify hardware parameters
that can't be entirely auto-detected or for which probing may be dangerous. Multiple kernel parameters are separated by a blank
space, and the string must be enclosed in double quotes. A local append= appearing withing an image= section overrides any global
append= appearing in the top section of the configuration file. Append= may be used only once per "image=" section. To concatenate
parameter strings, use "addappend=". Example:

append="mem=96M hd=576,64,32 console=ttyS1,9600"
If you read the above definition for 'addappend' and you wish to include the kernel parameter within the stanza for a particular boot image to allow the additional passing by concatenating the parameter to a global kernel parameter(s). If you use the append within the stanza then global parameter will be over written by the append within the stanza.
 
Old 03-12-2013, 07:36 AM   #6
chirag07
LQ Newbie
 
Registered: Mar 2013
Posts: 1

Rep: Reputation: Disabled
Brightness key does not work for me too.

hello,
i have installed ubuntu on one of my drive and then i have installed slackware in another drive and i have not installed lilo.
with the help of grub of ubuntu i am able to boot slackware but i am not able decrease the brightness.

acpi_backlight=vendor

works for me fine iiin ubuntu...but as i don`t have grub in slackware...can you please suggest me how to reduce the brightness of my laptop.i have acer aspire 5750z model laptop.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem installing Ubuntu on Acer Aspire One D270-1865 with Wubi.exe within Windows 7 jhorton197038 Ubuntu 6 04-18-2013 12:17 AM
Pg Up key does not work in X (Acer Aspire 5750) DrRevXyzzy Linux - Laptop and Netbook 2 02-09-2013 09:30 AM
Aspire 1410 HELP pls ChuckPT Linux - Laptop and Netbook 1 07-28-2010 11:15 PM
Home key on Acer aspire one with Ubuntu 9.4 UNR dasy2k1 Linux - Laptop and Netbook 2 04-07-2009 05:17 PM
Slack box with IPW2200 on Aspire 1410 not being detected Unregistered_Guest Linux - Wireless Networking 0 09-15-2005 12:07 AM


All times are GMT -5. The time now is 09:32 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration