Questions related to screen brightness.

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0
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0answers
16 views

Settings for display brightness not saved in Ubuntu 14.04 [on hold]

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 ...
8
votes
1answer
421 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 ...
37
votes
12answers
32k views

Brightness is reset to Maximum on every Restart

The brightness of my laptop is reset to Max on every restart. I tried the solution provided at this website but had no luck. ...
1
vote
1answer
5k views

How to install Intel Media Accelerator Driver in Ubuntu 12?

I have always been windows user, this is the first time i have switched to anything other than windows. The problem is that the display is very very dark and i know it has nothing to do with my ...
3
votes
1answer
106 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
2answers
3k views

Brightness options in Ubuntu 12.04 desktop missing

I am unable to change the brightness of my desktop screen using this path. System settings{top right corner of the screen)>Under Personal Brightness & lock.No option to change brightness is ...
0
votes
0answers
13 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 ...
-1
votes
1answer
26 views

how to decrease brightness in ubuntu installed on sony laptop [on hold]

I have installed Ubuntu 13.04 on Sony laptop. but I came up with brightness issue.. it is not decreasing at all.. I have also changed grub file as mentioned in on of Ubuntu discussion forum.. but ...
0
votes
0answers
28 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 ...
0
votes
1answer
7k views

Unable to adjust brightness in Ubuntu/Xubuntu/Lubuntu13.04

I've recently upgraded to Xubuntu 13.04 and noticed that I'm unable to use the brightness keys to adjust the brightness of my screen. I've tried just about everything this thread suggest and I'm still ...
1
vote
0answers
14 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
8 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
4k 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 ...
13
votes
4answers
4k 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 ...
1
vote
0answers
19 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
32 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
1answer
2k views

Dell laptop display brightness problem

I am using Dell inspiron 15 and Ubuntu 13.04. I have hot keys on my keyboard to adjust display brightness and they work fine.But the problem is, as soon as I switch on the laptop the brightness is set ...
0
votes
1answer
2k views

atheros wireless ar9285 driver

I have been having problems with wireless on Ubuntu 10 and above, Mint 11 and above. The problem is in the driver for the wireless... I can see that there is no driver installed and yet it works but ...
1
vote
1answer
22 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
61 views

Ubuntu boots up with full brightness

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
17 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
61 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 ...
2
votes
0answers
42 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
12 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
votes
0answers
61 views

Asus Eee PC Screen Brightness Problem [duplicate]

Running Ubuntu 14.04 on Asus EeePC 1005PE. System settings says the brightness is all the way up, but the screen is very dim. Brightness buttons don't do anything. Changing the brightness level in ...
5
votes
6answers
8k views

Brightness issue in a Lenovo ThinkPad Edge LR236W5

After upgrade from 13.04 to 13.10 Brightness is not working. Please let me know how to fix this issue, Machine configurations given below. id: thinkpad description: Notebook product: 0301G8G () ...
0
votes
2answers
79 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
6answers
7k 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
60 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 ...
2
votes
3answers
675 views

Lenove Z570 Brightness Setting Gone in Ubuntu 13.10

My Lenovo Z570 with Ubuntu 13.10 only now has not brightness controls. I tried some of the command line hacks (xbacklight and all) and checked all my drivers and bios (all are up to date) but nothing ...
3
votes
1answer
264 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
42 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
200 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 ...
21
votes
6answers
25k views

How to change LCD brightness from command line (or via script)?

To work around bug #1005495 (changing LCD brightness via hotkeys impossible), I'd like to have one command line query for increasing and one for reducing the brightness of my LCD. I could then map a ...
1
vote
2answers
5k views

no back light on my acer aspire 5734z

I installed Ubuntu (12.04) on my acer aspire 5734z and the back light stopped working. I have tried the fix by editing the grub file posted on here a couple of days ago but that hasn't fixed it. I ...
2
votes
4answers
2k views

Last couple of fglrx drivers on Ubuntu 12.04 have backlight support broken

I've been keeping up with latest fglrx releases on AMD's website and it appears that both the last stable (13.4) and beta (13.6) drivers have brightness broken in Ubuntu 12.04 with all the latest ...
1
vote
1answer
3k views

Fn keys for Brightness not working on Toshiba Satellite L755

I am running Ubuntu 12.04 and I love it! The only problem is the keys for my brightness, F6 and F7, does not work when I am on battery power or AC power. It randomly works after I am idle for a while ...
0
votes
1answer
515 views

Cannot change screen brightness

I can't change the screen brightness on my laptop (Asus G53JW) with 12.10 installed. I have tried many ways to solve the problem, but nothing worked. I tried to edit grub with acpi_vendor and acpi_osi ...
7
votes
7answers
6k 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
27 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
167 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
42 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
56 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
51 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
0answers
34 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
3answers
3k 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
69 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
44 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
919 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 ...