Questions related to screen brightness.

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0
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0answers
109 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: ...
7
votes
5answers
9k views

Brightness Controls Not Working on a Dell Inspiron N4010 Laptop

I have a Dell Inspiron N4010 laptop. My brightness hotkeys are not able increase or decrease the brightness of the screen. And as a matter of fact, I also can not reduce the brightness from the ...
5
votes
1answer
841 views

How to increase the screen brightness control sensitivity?

In Ubuntu 13.04, when I use the keyboard hotkeys to control my screen brightness, I only get 5 steps to go from the darkest to the brightest level, for a total of 6 levels. However, I noticed a ...
0
votes
1answer
160 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 ...
10
votes
0answers
648 views

How to disable KDE's brightness OSD?

I am using lightum to automatically control the screen's brightness depending on the surrounding light (on a Retina MacBook Pro). The problem is, though, that KDE picks up the change and displays the ...
3
votes
2answers
2k views

Brightness settings from terminal

I do change the Turn screen off when incative for: often using the below screen in Ubuntu 12.04. How do I change the same from the terminal? I did check in the gconf-editor, but couldn't figure it ...
1
vote
0answers
31 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
4answers
1k views

adjust the brightness in 13.04

I have a dual graphics card: intel 4000 and nvidia 630m... I installed bumblebee and intel drivers from their website. I thought the brightness problem will be solved by installing these drivers. ...
13
votes
5answers
7k views

What commands will change my screen's brightness?

I'm trying to re-keybind some of my function keys as I never use them for multimedia purposes, however I'm not sure as to what command I'd need to put it to increase/reduce the brightness, I'm talking ...
0
votes
1answer
30 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
2k 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.
0
votes
0answers
104 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
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0answers
43 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 ...
2
votes
2answers
360 views

Is there a way to make Ubuntu adjust the screen brightness automatically?

Does anybody know where I can find a program (or system setting) which turns up the brightness automatically when my laptop is plugged in to AC and turn down the brightness when disconnected from AC? ...
1
vote
5answers
4k views

Function keys are not working on Toshiba Satellite L510 so brightness control is not possible

I am using Toshiba L510 AND Ubuntu 12.04. I Cannot control brightness of my system using function keys. What could be the cause?
0
votes
0answers
234 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
892 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 ...
3
votes
1answer
127 views

Dim inactive compiz ( set speed of the effect)

I just enabled the dim inactive effect in compiz on ubuntu 13.04 and my question is: How can I speed up this effect? With this I mean how can I reduce the time it takes to make the background less ...
0
votes
0answers
51 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
43 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
42 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, ...
3
votes
3answers
5k views

Brightness problem with Xubuntu

I use Xubuntu Linux Brightness is good without using suspend mode but after using suspend mode I got problem with brightness It's lower than before ! I need your help
1
vote
1answer
1k views

Xubuntu 12.10 doesn't save screen brightness on reboot

I have a laptop running Xubuntu 12.10 that doesn't save the brightness setting on reboot. There are some explanations on Ask Ubuntu about how to have a specific brightness be set on reboot, but not ...
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 ...
0
votes
1answer
43 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 ...
1
vote
1answer
40 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). ...
1
vote
1answer
102 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
0answers
30 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
144 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 ...
0
votes
0answers
37 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 ...
1
vote
6answers
10k views

Installing Ubuntu 12.04 on a Lenovo G500

I recently bought a Lenovo G500, and had a rather entertaining time trying to get Ubuntu installed. Since it came with Windows 8 installed it turned out to be an unexpected challenge. For anyone ...
0
votes
0answers
143 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 ...
3
votes
1answer
304 views

Notified brightness change is not applied

Note : I know this question is becoming quite common, but I'm afraid every solution I found failed to solve the problem. Maybe the knowledge-base we have about this is getting old, irrelevant for ...
0
votes
0answers
92 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
2answers
251 views

How to reduce screen brightness on Sony Laptop using Ubuntu 13.10?

I am a complete novice to Linux and just installed Ubuntu 13.10 on my Sony Viao E-series laptop having NVidia graphics card. For the life of me, I can't seem to get the screen brightness down (The ...
7
votes
7answers
8k views

Brightness function keys not working

I have an ASUS X55A-SPD0204O laptop. The rest of the FN+Fx (where x = number) like sound + - mute, screen turn off, wireless etc. work perfectly. The problem is with the 2 brightness keys. They just ...
0
votes
0answers
31 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 ...
1
vote
2answers
329 views

How can I stop my Dell Inspiron laptop from dimming the screen when I plug in the AC adapter?

I'm using a Dell Inspiron N5110 laptop with Ubuntu 13 and I find that every time I plug the power in to charge, the screen brightness dims. If I go into the brightness settings window the brightness ...
0
votes
0answers
82 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
219 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
80 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 ...
-1
votes
3answers
4k views

fn keys for brightness not working on an hp 6735s

I use ubuntu 11.10 on hp 6735s, fn keys work for sound adjustment, but for brightness %98 of the times not working, I mean till now only maybe three or four times it worked. always I must set the ...
0
votes
0answers
126 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 ...
0
votes
2answers
1k views

Can't adjust the brightness on Ubuntu 13.10

I've got a new laptop ( Lenovo Thinkpad E145 ) and I can't adjust the brightness. When I press the brightness adjustment keyboards, I can see the window that appears top right corner which is showing ...
0
votes
0answers
415 views

Cannot control display brightness with HP ProBook 4545s (Radeon HD7420G) - Ubuntu 13.10

I need help because the notebook is always running at maximum light. 8( This HP Probook 4545s has AMD Radeon HD 7420G (HD7500M/7600M series) graphics and the video driver for the AMD graphics ...
2
votes
2answers
185 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 ...
4
votes
2answers
208 views

Fade in after inactive mode

Using Brightness & Lock I can set the time when the computer will go to inactive mode: Turn screen off when inactive for [1 minute]. After the time set, the screen fades out and then it ...
1
vote
1answer
838 views

Unable to change display brightness with Function keys or Brightness and Lock application in Ubuntu 13.10

I am having problem with Ubuntu 13.10 brightness control. My brightness shortcut keys (Fn + F5/F6) worked in 12.10 and 13.04 but they have stopped working in 13.10. I am using Sony Vaio SVE15113ENB ...
1
vote
2answers
3k views

How do I get the brightness control working on an HP 6735s?

I can't change the brightness on my screen via hotkeys or any other method. I'm stuck with low brightness which is very hard on my eyes during long periods in front of my laptop. Is there any working ...