LinuxQuestions.org
Review your favorite Linux distribution.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Bodhi
User Name
Password
Bodhi This forum is for the discussion of Bodhi Linux.

Notices


Reply
  Search this Thread
Old 09-20-2018, 11:43 PM   #1
enigma9o7
Member
 
Registered: Jul 2018
Location: Silicon Valley
Distribution: Bodhi 5 (Ubuntu 18.04)
Posts: 92

Rep: Reputation: Disabled
Laptop Backlight Slider Gadget


Nothing happens immediately when I adjust the slider.

However if I adjust it then reboot, it then takes affect; for example if I turn it all the way down and reboot, it's completely dim, and I can't turn it back up again without turning it up and rebooting.

The laptop is a Sony VAIO VPCF115FM if that helps, as I assume this is not expected behavior, but no idea how to troubleshoot as I think that is a bodhi specific thing so can't go searching for info...

I did try an alternative app but it just adjusted the brightness/contrast somehow in an attempt to dim that was somewhat effective, but not the actual hardware backlight so not what I want and certainly not useful for power savings.
 
Old 09-21-2018, 01:58 AM   #2
the_waiter
Bodhi Developer
 
Registered: Jun 2018
Location: Banská Bystrica, Slovakia
Distribution: Bodhi Linux
Posts: 78

Rep: Reputation: 25
Hello

Have you tried the keys for backlight or redefining them in key binding settings? In my case it is the last chance (I mean slider) how to make some NTBs backlight control. I have never had the issue you described.

Stefan
 
Old 09-22-2018, 12:27 AM   #3
enigma9o7
Member
 
Registered: Jul 2018
Location: Silicon Valley
Distribution: Bodhi 5 (Ubuntu 18.04)
Posts: 92

Original Poster
Rep: Reputation: Disabled
The Sony default keys, Fn+F5/F6 don't respond. I checked key bindings and was surprised to learn Bodhi has already bound them. When I tried to add Fn+F5 it identified it as XF86MonBrightnessDown and already bound to Backlight Down, as was the up. And binding another key to Backlight Down didn't do anything different. The keys also change the brightness level if I check the slider gadget after keypresses. So not the problem.

I did consider installing acpi-support package but not sure if that was the right track. I've already tried installing a couple other solutions and not sure how much is left behind installing and purging apps...

Last edited by enigma9o7; 09-22-2018 at 12:38 AM.
 
Old 09-22-2018, 12:51 AM   #4
the_waiter
Bodhi Developer
 
Registered: Jun 2018
Location: Banská Bystrica, Slovakia
Distribution: Bodhi Linux
Posts: 78

Rep: Reputation: 25
Laptop Backlight Slider Gadget

Which Bodhi version do you have installed? I have also one Sony Vaio, old one, and I had to install bl 4.5 legacy for covering almost all features. The only issue which stayed unsolved is wake up after suspend.

EDIT: maybe in your case is fine just changing the kernel version. Try an older one...

Last edited by the_waiter; 09-22-2018 at 01:03 AM.
 
Old 09-22-2018, 01:19 AM   #5
enigma9o7
Member
 
Registered: Jul 2018
Location: Silicon Valley
Distribution: Bodhi 5 (Ubuntu 18.04)
Posts: 92

Original Poster
Rep: Reputation: Disabled
This vaio isn't super old, but certainly not brand new. Running 5.0 64-bit. Older kernel you say... hmmmm. I'll try that acpi-support package first, then try older kernels.
 
Old 09-22-2018, 01:25 AM   #6
ondoho
LQ Addict
 
Registered: Dec 2013
Posts: 9,677
Blog Entries: 7

Rep: Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393
Quote:
Originally Posted by enigma9o7 View Post
The Sony default keys, Fn+F5/F6 don't respond. I checked key bindings and was surprised to learn Bodhi has already bound them. When I tried to add Fn+F5 it identified it as XF86MonBrightnessDown and already bound to Backlight Down, as was the up. And binding another key to Backlight Down didn't do anything different.
a wild guess...
try to unbind the keys, maybe the laptop will take care of them "itself"?
i'm not sure about this, but i think some of these laptop function keys work on a level below the operating system.
 
Old 09-25-2018, 11:47 AM   #7
enigma9o7
Member
 
Registered: Jul 2018
Location: Silicon Valley
Distribution: Bodhi 5 (Ubuntu 18.04)
Posts: 92

Original Poster
Rep: Reputation: Disabled
I unbound both keys in bindings to no affect.

There is also acpi bindings. I unbbound brightness up and brightness down. Also no affect.
 
Old 09-26-2018, 01:00 AM   #8
ondoho
LQ Addict
 
Registered: Dec 2013
Posts: 9,677
Blog Entries: 7

Rep: Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393
Quote:
Originally Posted by enigma9o7 View Post
I unbound both keys in bindings to no affect.
how? you need to show us the steps & some proof of your final verdict.

Quote:
There is also acpi bindings. I unbbound brightness up and brightness down. Also no affect.
how? you need to show us the steps & some proof of your final verdict.

effect, btw.
 
Old 09-26-2018, 11:54 AM   #9
enigma9o7
Member
 
Registered: Jul 2018
Location: Silicon Valley
Distribution: Bodhi 5 (Ubuntu 18.04)
Posts: 92

Original Poster
Rep: Reputation: Disabled
Y'know, I thought about was it affect or effect before I submitted, I'm never quite sure.

Not sure why you're requiring proof, it's not like I'd make up that I tried it. But anyways I'll answer.

Bindings are in settings/settings panel/input.

For key bindings, I selected add, pushed fn+f6, which brought me to XF86MonBrigthnessUp. I then pushed delete. Repeat for XFMonBrightnessDown. Apply. Close. After this, the slider no longer moves when I make adjustments, as well as backlight still not changing.

For ACPI bindings I selected Brigthness Up and pushed delete. repeat for brightness down. Apply. Close.

Last edited by enigma9o7; 09-26-2018 at 11:56 AM.
 
Old 09-27-2018, 01:00 AM   #10
ondoho
LQ Addict
 
Registered: Dec 2013
Posts: 9,677
Blog Entries: 7

Rep: Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393Reputation: 2393
i agree there's not much new information in your description.

with what we have, i guess this is not an operating system problem.
undo all the changes you made, and concentrate on ACPI issues.
try some search terms like "ubuntu acpi <make_model_of_computer>" etc.
there are even some kernel command line options for backlight, iirc "backlight=vendor" or some such.
check it out.

Quote:
Originally Posted by enigma9o7 View Post
Y'know, I thought about was it affect or effect before I submitted, I'm never quite sure.
nevermind.
in this context, the verb is affect, and the noun is effect.
sorry for being a grammar nazi.
 
  


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
ThinkPad T520 backlight brightness hotkeys and Xfce slider not working in Linux (Xubuntu 17.04) Woolie Wool Linux - Laptop and Netbook 11 08-30-2017 06:35 AM
HP Laptop Backlight Issue surg3 Linux - Laptop and Netbook 1 09-04-2012 03:18 AM
Laptop Backlight not coming on aovenden Linux - Laptop and Netbook 3 06-22-2010 05:28 AM
help on laptop's LCD backlight fastestOS Slackware 2 08-25-2008 04:37 AM
Laptop Backlight and Modem/Soundcard related ?? cyberjun Linux - Laptop and Netbook 1 03-30-2005 04:52 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Bodhi

All times are GMT -5. The time now is 10:20 AM.

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
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration