Questions related to screen brightness.

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0
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2answers
565 views

Change brightness on Asus G53JW with Ubuntu 14.04

I have an Asus G53JW and I can't manage to change the brightness anyhow (fn hotkeys are not working). I used Debian for 6 months and had the same issue and never found I way around this. I did ...
1
vote
1answer
384 views

Ubuntu 14.04LTS hangs when i change brightness of my display on Dell N5010 laptop

I have dell n5010 my system hang when I try to change brightness of the display and this happen only when my system on battery please help how to solve this problem
1
vote
0answers
310 views

Cannot lower brightness in Ubuntu 14.04 with amd drivers

So I cannot adjust my brightness at all. It is always at the max and I have tried updating the grub with acpi_osi=linux & acpi_backlight=vendor & acpi_osi= & acpi_osi=Linux ...
1
vote
1answer
83 views

Change the default screen brighthness

Hi im using Xubuntu 14.04 with linux 3.13.0-24 every time my screen goes dark ( activating the screen saver or so ) my current screen brightness is set to some default value how can I change ...
0
votes
1answer
98 views

Brightness control issue

Brightness notification control is not working on Ubuntu 14.04. I searched over google if there is any method to fix it but I can't find nothing which is working or reliable. This is what I got from ...
1
vote
1answer
223 views

Samsung Keyboard Brightness Keys

So I've recently installed Ubuntu 14.04 (kernel: 3.13.0-24-generic). It's mostly working with my Samsung NP540U4E laptop, just having some trouble with the keyboard brightness change function keys. ...
0
votes
1answer
148 views

brightness level saving problem

I am using Ubuntu 14.04 and I want to save my brightness level, because every time when I start the computer the brightness level is maximum. thanks, Kolyo ls -l /sys/class/backlight: total 0 ...
0
votes
0answers
200 views

Brightness adjustment not working on Ubuntu 14.04

My netbook keyboard has a brightness adjustment key, with which the brightness adjustment was successfully working till I updated to 13.10. Now the brightness adjustment fails. This link (Display ...
1
vote
1answer
218 views

Question about /etc/default/grub

I had previously changed the GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" in order to change my screen brightness with the keyboard ...
4
votes
1answer
2k views

Ubuntu 14.04 Brightness issue with nvidia Quadro

I recently upgraded from Ubuntu 13.10 to 14.04. Everything is fine, except the brightness of my laptop screen. When I change the brightness the screen simply does not respond. I figured this was a ...
1
vote
2answers
288 views

Brightness controls mismatch

This seems to be a hardware issue rather than a Ubuntu issue, but nevertheless, here goes. I have an Acer ao756-2617 with Ubuntu 14.04, elementary os luna, bodhi linux, and zorin os 8. most of these ...
0
votes
0answers
130 views

No WiFi, Brightness adjustment after returning from sleep mode, and Hibernation function with AMD Radeon HD 6480G GPU

I have the following GPU: $ lspci | grep -i vga 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Sumo [Radeon HD 6480G] I've tried with the following drivers: ...
0
votes
1answer
185 views

Brightness Save on Reboot

I have a problem where the brightness does not save after a reboot on 14.04 LTS, but I had the same problem on 12.04 LTS (before I broke the system). Before you say this is a duplicate of a million ...
3
votes
0answers
406 views

Ubuntu 14.04 locks screen without dimming during fullscreen video playing?

I upgraded from 13.10 to 14.04 yesterday, and it appears that something has changed concerning how screen dimming works during fullscreen video playback. This problem does not occur during video ...
1
vote
0answers
32 views

Ubuntu 12.04.3 LTS retaining screen brightness

Is it possible that Ubuntu retains screen brightness settings used in the previous session after the computer is turned off. If so how can I achieve this effect?
0
votes
1answer
52 views

Ubuntu 12.04 in a 2 months old Toshiba Satellite

I installed Ubuntu 12.04 in a 2 months old Toshiba Satellite C75 AMD A6-5200 APU with Radeon(TM) HD Graphics × 4 and 4gigs of ram. It doesn't detect my laptop internal wireless card only my external ...
0
votes
2answers
5k views

How should I control the brightness on my Ubuntu 14.04 system? [duplicate]

Brightness control button is changing brightness value in file /sys/class/backlight/acpi_video0/brightness, but screen brightness is not changing.
1
vote
1answer
1k views

Toshiba Satellite P850 FN-Keys not working

I could solve several other issues with my laptop thanks to this forum. The only thing I can't figure out is the non working FN-Keys for the brightness. Volume control is fine. Two things I found out ...
0
votes
0answers
143 views

How do I un-dim my computer screen after I close the lid in xubuntu?

I have recently installed xubuntu on top of normal ubuntu on my computer. A problem that is really bugging me is that whenever I close the lid on my computer, it will go to sleep, as usual, but when I ...
0
votes
0answers
47 views

Brightness doesn't change in sony vaio

I am using sony vaio with ubuntu 12.10 in dual boot with windows 7 and AMD RADEON graphic card. Brightness settings are not working in ubuntu and it is releasing lots of heat. Please help me how to ...
3
votes
1answer
3k views

Ubuntu 14.04 - brightness problem in HP hybrid laptop

In a HP sleekbook 15 laptop I managed to install NVidia driver and also quick switch graphics is working. When NVidia card is active I can adjust the brightness using keyboard but when intel card is ...
3
votes
6answers
21k views

Make xconf configuration permanent

I edited the xconf file, and added this line to device section: Enable brightness control=1 Now I am able to adjust brightness, but after every restart the brightness setting change back to 100%. ...
0
votes
0answers
268 views

AMD screen-brightness adjustment issue with Trusty Tahr

I upgraded to 14.04 just today and since I'm now using kernel v3.13 and according to This link, I should now be having better support for AMD grapahics. Is it possible to fix the screen-brightness ...
2
votes
0answers
945 views

Settings for display brightness not saved in Ubuntu 14.04 [closed]

I have bought HP ENVY 15t laptop and installed Ubuntu 13.10 on it. The first annoying thing I faced with was restoring brightness settings to 100% after reboot. So I had to adjust it every time I ...
0
votes
0answers
64 views

fglrx brightness and black screen

In a HP 2000 Notebook PC and ubuntu 13.10, when I change the radeon driver for the fglrx, glxgears show more fps, but any brightness change make a black screen for one second. With the radeon driver ...
0
votes
0answers
32 views

Different problems with my 13.10 system

Hello guys, I'm a real newbie in using ubuntu, but I really, really like it. I'm facing 2 different and annoying problems tough, so I hope you guys can help me out with this. First Problem: I have ...
1
vote
0answers
71 views

How can I adjust the brightness on an HP Envy dv7?

I have an HP ENVY dv7. When I was running Windows 8, I could tweak the brightness to my heart's content. Now, I'm limited to only the first five clicks on the brightness bar. After that, same max ...
1
vote
0answers
66 views

How to decrease step of XF86KbdBrightnessDown and XF86KbdBrightnessUp handlers on Ubuntu

My hardware supports full 256 steps of screen brightness. Unfortunately Ubuntu's default brightness driver uses wrong steps: I need to increase granularity of steps in the dark end of the spectrum, ...
1
vote
0answers
32 views

Can't change brightness when installing

I'm kind of newbie in ubuntu. After several hours of research and trail, I finally managed to boot into Ubuntu installation screen via USB. However, my screen brightness is really really dim, I can ...
1
vote
1answer
53 views

Can't connect to WiFi and adjust brightness after crash

Disclaimer: I'm pretty new to Ubuntu; Lenovo G505s; Ubuntu 13.10 I was doing an update via the Software Updater when suddenly my laptop just hangs. I had to force shutdown (holding the power button). ...
0
votes
0answers
38 views

Grub changed brightness but after pressing brightness button return dark

My laptop is Lenovo K49. It's dark so every time I need to change brightness manually. Later I found a solution by changing the brightness as below: sudo gedit "/etc/default/grub" And change the ...
0
votes
1answer
181 views

Why I cannot use the Fn + (up) to control the brightness?

I have a Lenovo zhaoyang K27 with Intel® HD Graphics 3000. Since I installed Ubuntu for the first time, about two years ago, I haven't been able to change the brightness by Fn+^. I found a solution in ...
9
votes
2answers
553 views

Stop Screen Dimming After 60 Seconds (MacBook running 12.04)

I'm running Ubuntu 12.04 on a MacBook air - everything works fine, apart from the fact that the screen dims after 60 seconds of activity. Is there any way to stop this? My computer is on mains ...
0
votes
0answers
53 views

Brightness resets when lid is closed and opened.

So my brightness with the slider in settings wasn't working before I edited in /etc/default/grub this GRUB_CMDLINE_LINUX="" to this GRUB_CMDLINE_LINUX="quiet splash acpi_osi=Linux ...
0
votes
2answers
130 views

How to adjust brightness vaio nr21s ubuntu 13.10?

I installed Ubuntu 13.10 on my Vaio nr21s but cannot adjust brightness levels. The fn keys work, but they don't change a thing, brightness remains at max level. Thought I should choose a repository ...
0
votes
0answers
181 views

Unable to control brightness, ASUS F551MA/Intel HD

I am unable to control my screen brightness on my new ASUS F551MA with only ubuntu 12.04 installed. It has Intel HD graphics. I can't control my brightness nor with FN+F5/F6 nor with ...
0
votes
0answers
116 views

Changing Brightness Xubuntu [13.10]

I cannot change the screen brightness on Xubuntu 13.10. I am running a Toshiba Satellite Laptop, using the proprietary fglrx AMD drivers, and have tried the acpi_vender etc. kernel parameters (do not ...
1
vote
1answer
122 views

Ubuntu boots up with full brightness [duplicate]

I have installed Ubuntu 13.10 in my samsung laptop,everytime i boot up the system it starts with full screen brightness which is quite annoying in the night. Is there a way to fix this problem so ...
0
votes
1answer
46 views

Brightness problem in Ubuntu 12.04 Precise Pangolin

I own a ACER ASPIRE5734Z that has a Pentium(R) Dual-Core CPU T4500 @ 2.30GHz × 2. I tried this solution,but did not work out: Open terminal ( Ctrl+Alt+T ) and type: sudo gedit /etc/default/grub ...
0
votes
0answers
38 views

is there any option to set brightness permanently in ubuntu desktop GUI ?

I have changed the brightness level permanently using terminal. temporarily we can change the brightness in GUI. but for permanently setting it, Is there any option in GUI mode? if not why such a ...
0
votes
0answers
137 views

Brightness Issues on HP Pavilion 15-n042se Notebook PC

I have installed Ubuntu 12.04 LTS, I found that I can't control the display brightness with the hotkeys (F2 and F3) or even from GUI (Brightness and lock screen), I don't have any control on the ...
0
votes
0answers
320 views

Can't adjust screen brightness on lenova y410p

Can't adjust screen brightness on lenova y410p. I'm running unbutu 13.10. I tried different answers on here but nothing seems to work. I changed GRUB_CMDLINE_LINUX in /etc/default/grub to include ...
1
vote
0answers
87 views

fn + Up and fn + Down both increase brightness, notification not showing when doing so(Lenovo z570)

When I installed Ubuntu on my Lenovo z570, with Ubuntu 13.10 I couldn't manage to get the brightness to change. I read some of the solution to similar problems people had and I played around with ...
0
votes
1answer
91 views

Dell laptop screen brightness is not working after upgrade from 12.04 to 13.10

I tried with GRUB_CMLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor" and sudo update-grub but did not worked.Please help me out
0
votes
1answer
269 views

Brightness function keys problem

I have an HP 650 notebook, and I just finished installing ubuntu 13.10 . The problem is that brightness function keys don't work ( f2 and f3 ). I tried changing GRUB_CMDLINE_LINUX_DEFAULT and updating ...
0
votes
0answers
189 views

Adjust screen brightness in Ubuntu 12.04 LTS (Packard Bell Easynote R4622 laptop)

I have a Packard Bell R4622 laptop running Ubuntu 12.04 LTS 32 bit. I turned the brightness down with the function keys because the screen was too bright, but now it is too dark and I cannot turn it ...
2
votes
2answers
189 views

Unable to change brightness using keys after recent 13.10 update

I have been using Ubuntu 13.10 for months now without too many hassles. But a couple of days back, my system offered to install this major update and of the many things that have gone wrong, the most ...
0
votes
0answers
177 views

My Laptop Not Charging And Brightness Keys Not Working After Installing Ubuntu 12.04.3 LTS

I have Lenovo(G-505s) Laptop with per-installed windows 8. Recently I'm installed Ubuntu 12.04 through CD. But after installing my laptop battery not charging and my brightness keys not working in ...
1
vote
2answers
244 views

Why is my Laptop Brightness reset to minimum after every restart?

I have an Acer Aspire 6930G with an Nvidia 9600MGS and Ubuntu 12.04 LTS. Every time I turn off my computer and then turn it back on the brightness is always set back at the lowest possible level. I ...
0
votes
0answers
342 views

Xubuntu Brightness not working

I am trying to gain the ability to change the brightness on my Toshiba Satellite laptop running Xubuntu. I have xbacklight, and am running xfce4-power-manager with the --no-daemon flag. It's not ...