Questions related to screen brightness.

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11 views

Replacement Screen problem

I had a broken screen and I replaced it myself and now when ever I turn on the laptop it boots to Ubuntu and when it's booting the screen it gets brighter and brighter and becomes so bright that can't ...
1
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0answers
32 views

Dell Chromebook 11 - unable to set backlight and /sys/class/backlight/ folder is empty

I have installed Lubuntu on my Dell Chromebook 11 and everything works except for the backlight. Can't set the backlight with the brightness keys, neither with xbacklight,xdotool or any other GUI ...
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0answers
6 views

Brighness controls on Toshiba Tecra

The brightness controls do not have any visible effect on my Toshiba Tecra W50. I tried every combination of acpi_brightness=vendor and acpi_osi=Linux to no avail. How can I change my screen's ...
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0answers
22 views

LXLE 12.04.5 on Sony Vaio VGN-T150, Fn keys and volume keys don't work

I have a Sony VGN-T150 ultrabook that I've had since 2005; it's a Pentium M 1.1ghz (ULV 733) with 1GB RAM, running LXLE 12.04.5. It came with WinXP, but I've transitioned from Windows to Linux about 6 ...
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0answers
28 views

Installed Ubuntu 14.04 corrupted? Several settings icons have vanished

I think my Ubuntu 14.04 installation may have become corrupted. I wanted to turn down the brightness of my laptop running Ubuntu 14.04 as I was going to be on battery power for a few hours, but the ...
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0answers
19 views

Change default behavior of Fn+Funtion key

I have the latest version of Ubuntu 14.04 installed on my Toshiba Satellite C55D-B5212. All of the Fn key combinations work correctly except the brightness down and brightness up ones (Fn+F2 and ...
0
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1answer
35 views

What is the difference between GRUB_CMDLINE_LINUX and GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub

I'm troubleshooting a fn-key brightness control problem on my laptop, so I'm wading through a lot of config options in /etc/default/grub, as you can imagine. However, it's raised a question for me: ...
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0answers
21 views

How can I disable screen auto brightness in 14.10?

I have a Samsung 730u3e with hybrid radeon graphics, that comes with sensor(s) for screen and keyboard brightness. The keyboard auto brightness works very well, I can increase/decrease or turn off as ...
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0answers
37 views

Screen dim while brightness set to max on Xubuntu 14.04 everytime display turns off

I used to have an issue where every time my laptop would return from suspend, the screen was fully dim (as if brightness was at a minimum) even though the brightness setting was set to maximum - so I ...
0
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1answer
91 views

Ubuntu 14.04 brightness problem

My brightness controls weren't working before but I didn't really care, but somehow I lowered my screen brightness while downloading league through playonlinux. Now the brightness controls aren't ...
0
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0answers
16 views

customize ubuntu with bash scripts - never turn the screen off [duplicate]

I'd like to disable the screen from dimming automatically. It is manually done in Settings > Brightness & Lock > Turn screen off when inactive for: Never. I want to do it with a shell ...
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0answers
34 views

Suspend and hibernate break brightness adjustment

I am currently using Ubuntu 14.04 (architecture is amd64) with kernel version 3.13.0-44-generic on an HP Pavilion g7-1350dx. Output of lspci | grep -i vga to find GPU is as follows: 00:01.0 VGA ...
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2answers
43 views

Ubuntu 12.04 LTS is not booting after altering a text file in gedit, how to fix?

After failing to adjust my screen brightness in Ubuntu in various ways, I tried the following guided by an answer in askubuntu. I opened the following text file sudo gedit /etc/X11/xorg.conf It ...
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0answers
28 views

Laptop Brightness not remembered on Power Plugged in

On Ubuntu 14.10 Utopic, using a Samsung Notebook laptop, I can change the brightness correctly and it is remembered upon wake from sleep. However my problem is that when my laptop is on battery and I ...
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0answers
77 views

I can't adjust screen brightness in lenovo Z500

I'm using Ubuntu 14.10 on a Lenovo Z500. I cant adjust screen brightness. How can I get this to work?
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3answers
101 views

Brightness Fn keys suspend the notebook

In Ubuntu 14.10, everytime I press any of the "Brightness Fn keys" the notebook suspend, by the way the "Sleep Fn key" does nothing at all. Is there a way to remap all the Fn keys manually? Thanks!! ...
1
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0answers
178 views

screen brightness control not working: Lenovo g50-45: AMD Radeon: Ubuntu 14.04

I've a Lenovo G50-45 machine with AMD processor [Radeon APU A4-6000 with R2 Graphics]. I tried the solution from Rmano but no success. Using Ubuntu 14.04. I tried the solution pasted here: [Ubuntu ...
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0answers
38 views

Screen Brightness Ubuntu-Gnome 14.1 Toshiba Satellite L755

SO I have: Toshiba L755 , Nvidia backlight Here are some error messages I am getting while getting updates through the terminal: W:Failed to fetch ...
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0answers
31 views

Can't adjust brightness after suspending

I just installed Mint 17.1 (Couldn't find a Mint StackExchange, but it's based on Ubuntu) on an 11" Macbook Air. It works fantastically well right out of the box, however, if I suspend the computer, ...
0
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0answers
81 views

How to disable automatic brightness adjustment in Ubuntu 14.04?

I am running Ubuntu 14.04 LTS on a Dell 3542 laptop. My problem is that screen brightness changes depending on content. I think this is called automatic (or dynamic) brightness adjustment, as I stated ...
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0answers
51 views

I cant change the brightness in apire v3 571g [closed]

i am using aspire v3 571g. OS is windows 8.1 pro. whenever i am changing the brightness the arrow is changing but bright have no any change. I need help to overcome this problem
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1answer
62 views

Lubuntu Display brightness

Just installed Lubuntu 14.10 on my machine. I cannot change the display brightness. I have a slider in my power settings but it does nothing. Cannot post screenshot of the slider because of no rep ...
4
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2answers
140 views

Ubuntu brightness indicator stops working upon laptop open/close

So I installed Ubuntu 14.04 on a 2011 edition MacAir, and I had the common problem of being stuck with either full screen brightess or pure darkness, with no options in between. I installed ...
8
votes
2answers
287 views

Terminal command for checking/unchecking “Dim screen to save power”?

I am having problems preventing my laptop, running Ubuntu 14.04, from dimming its screen when on battery power. I have tried everything that is out there on the internet to prevent this happening, but ...
1
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1answer
70 views

How do I clear up textures on my desktop?

I have an nvidia Geforce GT 430 installed, I do have the "proprietary driver" x servers setting thing, but yet everything looks kind of rough, like rough edges and with a LOT of contrast, similar to ...
4
votes
0answers
100 views

“monitor brightness down” key resets brightness before lowering it

My monitor brightness down key resets my brightness before lowering it, effectively leaving me at near max brightness. I do not experience any problems with the brightness up key. I'm using a Dell ...
0
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0answers
61 views

change screen brightness

I've got a strange situation and I'm hoping someone can shed a light on it. I re-installed my dell laptop (and switched from unity to gnome) today and (as expected) dimming my screen didn't work. So I ...
0
votes
1answer
52 views

Brightness steps twice on one keypress

I am having an issue on my HP Pavilion g7-1350dx laptop. Whenever I press the keyboard's brightness keys, I notice two things: the display brightens by two steps instead of one, and the Unity OSD ...
1
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0answers
32 views

latest kernel killed my ThinkPad W520 hotkeys

for some reason after latest kernel/nvidia and other updates on my 12.04.5 LTS running kernel Linux ThinkPad-W520 3.13.0-43-generic #72~precise1-Ubuntu SMP Tue Dec 9 12:14:18 UTC 2014 x86_64 x86_64 ...
0
votes
2answers
100 views

How to set brightness level even lower than default minimum?

I am an ex-Windows user, I noticed that minimum level of screen brightness on ubuntu is way brighter than minimum level on windows when I was using it on the same hardware. I was wondering if I can ...
0
votes
1answer
272 views

Lenovo G40-45 AMD Driver match for Ubuntu 14.04 LTS

I have Lenovo G40-45 Laptop with specs : AMD A8-6410 Processor Radeon R5 M230 I use Ubuntu Gnome 14.04 LTS for the operating system, overall almost my laptop work properly with Ubuntu, but I ...
0
votes
1answer
31 views

Own brightness script, problem with missing ']'

I'm starting my adventure with Ubuntu ( I'm a MS's kid :D) and I would like to create my own scripts for controlling the brightness. I know all about the xbindkeys, and how does it works, but there is ...
0
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1answer
115 views

ubuntu 14.04 fn brightness nvidia not working samsung r540

here's my system info. ubuntu 14.04 nvidia gt330m when i press Fn + up or Fn + down. It doesnt change monitor's brightness. but on top-right corner brightness indicator moves left and right.
0
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0answers
97 views

Getting Ubuntu to work on Thinkpad E145

tl;dr at the bottom I just bought a brand new Lenovo Thinkpad E145, without any pre-installed OS. I wanted to get an Ubuntu distribution so i can run gnuplot and similar stuff, just things for ...
1
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0answers
32 views

gcm-calibrate without hardware sensor

My monitor won't allow me to set the contrast when using DVI. And ubuntu/gnome won't allow me to set it via software without some fancy color calibration sensor. on system settings > color the ...
0
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2answers
84 views

Brightness Icon

Before Icon Brightness was appearing Hotkey (FN+Arrow Right) Whenever i wanted to change my brightness the icon appears on right side of Ubuntu. But then it suddenly stopped working, it was changing ...
0
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0answers
93 views

How can I get more granular brightness control on Asus X550C laptop

I am quite of a newbie to linux and I like my screen to be as dim as possible most of the time. I have Asus X550C Laptop and I had installed Fedora "heisenbug" on it. The thing was, brightness ...
0
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1answer
264 views

brightness control not working in 14.04 (dell inspiron 3537)

brightness control not working when keys are pressed with Fn key. it shows indicator on top right corner increasing & decreasing but nothing happens.
0
votes
1answer
43 views

Ubuntu 12.04 brightness control not working on HP 255

The brightness of my HP 255 is stuck on its brightest level and won't turn down even when I move the cursor back and forward. I tried some of the answers to this on my computer, and now the whole ...
0
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1answer
101 views

I am unable to change brightness of my laptop

i am new to ubuntu and using Ubuntu 14.04 and installed nvidia graphics driver in my sony vaio E-series VpCEH25en but I cant change the brightness.
2
votes
0answers
458 views

Screen brightness cannot be changed after upgrade to 14.10

As the title suggests, I upgraded my Dell XPS 15 laptop to 14.10 and now the brightness is stuck at the lowest level. The fn+F4/F5 displays the brightness notifications but the brightness level of the ...
0
votes
1answer
414 views

Automatic screen brightness on Ubuntu 14.10 not working right, manual controls not working at all

My Samsung NP740 has been running Ubuntu fine for 18 months. I did an upgrade to 14.10 and the screen brightness controls stopped working correctly. I did a wipe and fresh install and I still have the ...
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0answers
182 views

Carbon X1 and Ubuntu 14.10 issues - hibernation, key mapping, brightness and volume keys

I got a Thinkpad Carbon X1 (2nd Gen) with Ubuntu 14.10 and I have a few issues/questions: 1. hibernation (Edit - ...
2
votes
2answers
367 views

Ubuntu 14.04 LTS: FN-Brightness Key Stopped Working

Hello dear Ubuntu Community, After i installed some Ubuntu Updates on my PC,my FN-Key stopped working. (But i can still change it in the System settings. I tried many ways to fix it trough the ...
1
vote
1answer
113 views

Some Fn Keys not working after BIOS upgrade (ASUS X401U)

Before upgrading BIOS from version 204, all Fn Keys were working properly. After successful upgrade via EasyFlash to version 313 of my ASUS X401U some Fn keys are not working anymore which are: Fn + ...
0
votes
1answer
137 views

Brightness keys not working and no obvious interface for adjustment either

New to Ubuntu and so far pretty happy with it but one niggle is the brightness controls do not seem to work. I have looked at fixes on here + google but nothing seems to get it right. Mostly effecting ...
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0answers
79 views

How do I change the default brightness on my computer?

Every time I turn on my computer the brightness is automatically set to the highest possible setting. Is there a way I can change this and make the default brightness setting darker?
0
votes
2answers
101 views

Changing screen Brightness with a script

As you may know, screen brightness drains battery, that's why it is considered a big problem for laptops (at least for me). I can change the screen brightness but every time ubuntu boots up I will ...
0
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2answers
82 views

Something weird is happening with Fn keys

I have an Asus N56JR with NVIDIA GeForce 760M. I am running Ubuntu 14.04 LTS. There are a few things wrong with my Fn keys. For one the brightness (controlled with Fn+F5 and Fn+F6) do not respond at ...
0
votes
1answer
40 views

Lower Minimum Screen Brightness

By using /sys/class/backlight/ the screen brightness can go lower than when using the function keys to do so. Is there a way to change the minimum level used by the function key method, rather than ...