Questions related to screen brightness.

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-2
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0answers
12 views

[Solved - Lubuntu Screen goes dark when switch user] [on hold]

I just installed Lubuntu. Whenever I switched from the main user to a second user account, the screen when to almost zero brightness. The screen stayed dark until I switched back to the main account. ...
1
vote
4answers
9k views

Brightness fn key shortcut doesn't work on ASUS laptop

The brightness shortcuts via fn key don't work. I tried each solution from this answer and its comments. After editing /etc/default/grub file I rebooted. GRUB_CMDLINE_LINUX="acpi_osi=Linux" ...
1
vote
2answers
30 views

adjust brightness without reboot and in console?

When I switch to a console by Ctrl-Alt-F1, the screen becomes darker than in Ctrl-Alt-F7. So I wonder how to adjust brightness in command line without reboot? My Ubuntu is 14.04 on Thinkpad T400 ...
0
votes
0answers
18 views

Display brightness problem on ThinkPad X1 Carbon 2015 (3rd Gen)

I now obtained brandnew ThinkPad X1 Carbon 2015 (3rd Gen) (20BS). Almost of setup has been done, but one problem remaining. Display brightness. << What I had done >> Reference pages are Lenovo ...
0
votes
0answers
31 views

Trying to screen record on Ubuntu trusty 14.04 while using chromebook

I am using an Acer Chromebook 11 that i installed Ubuntu trusty 14.04 LTS using crouton. I wish to be able to screen-cast on Ubuntu and i am attempting to use Kazam screen recorder from the Ubuntu ...
0
votes
0answers
18 views

AMD radeon hd 8750m driver problems

I recently installed Ubuntu 14.04 LTS on my Samsung 3-series laptop. I've got some troubles and I've come to the conclusion that it is my graphics card/chipset (don't know exactly what to call it) - ...
0
votes
0answers
8 views

Ubuntu 14.10 freezes upon adjusting brightness using GUI or hotkeys

I'm facing this new issue just now which is that my Ubuntu 14.10 installation, which was running smoothly for the most part until yesterday, now completely freezes anytime I adjust the brightness ...
0
votes
2answers
4k 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
9 views

Backlight Brightness is not adjustable - Dual Boot with Win8.1 and two graphic chips

I'm really sorry to ask again a FAQ, but all suggested solutions does not work out. I have problem with the backlight brigthness controll. Ubuntu response to pressing Hotkeys with an poping up the ...
1
vote
0answers
30 views

Brightness control on Samsung Ativ Book 6

I recently installed Ubuntu 14.04 on my Samsung Ativ Book 6 (NP680Z5E-X01US). Since then I am completely unable to modify my brightness settings. The Fn buttons work fine, if I press Fn+F2/F3 I can ...
77
votes
15answers
63k 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. ...
0
votes
0answers
16 views

Unable to change keyboard brightness on Ubuntu 14.04 login screen

I own an Asus N551JK laptop running Ubuntu 14.04. It works very well but at login screen, it seems that the system cannot "remember" past keyboard and screen brightness configuration, setting both ...
0
votes
0answers
32 views

When I boot some words showed on screen,what do they mean?

The text is: [ 1.3087766] pci 0000:00:01.0 ASPM: Could not configure common clock My pc is lenovo Y400,and OS is ubuntu kylin 14.04LTS(ubuntu for Chinese:-)) Intel corei5 3230M NVIDIA GeForce ...
2
votes
3answers
100 views

Brightness and volume buttons dont work?

I have toshiba chromebook 2 and i installed ubuntu 14.04.02 few days ago and noticed that my function buttons dont work. I mostly care about brightness and volume buttons. Is there any solution for ...
0
votes
0answers
13 views

Ubuntu 14.04 brightness too low, keyboard backlight is on, how can i change this?

i used to have ubuntu 12.04 and when i upgraded to 14.04 "grub" will start with very dim light and my keyboard backlight on. i don't think is about fixing grub because it works fine and it still shows ...
2
votes
2answers
6k views

Cannot change brightness setting using function buttons or using the brightness control bar on HP laptop

I faced this problem when I brought a new HP Laptop , hoping to install Ubuntu(Linux) but when i booted from a Live DVD the brightness was set at max and wouldnt be changed from the function keys or ...
4
votes
2answers
201 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
1answer
244 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.
1
vote
0answers
24 views

Display Settings on AC and Brightness key

I have recently installed Xubuntu 14.02 on a Lenovo Thinkpad E555 I got everything working however I have had these problems: When connecting AC power to the computer the Display Config comes up. ...
1
vote
1answer
105 views

Brightness control (Fn+ …) not working on Ubuntu 14.04 Asus Q502LA

I installed the Ubuntu 14.04 on Asus Q502LA laptop. Most of the things work fine, but brightness control does not work. First, everytime on reboot, the brightness resets to 100% brightness. Second, ...
0
votes
0answers
27 views

How do I stop Ubuntu thinking it's installed on a laptop?

I have recently installed Ubuntu onto my desktop. I had some issues installing drivers for my graphics card and I had to reinstall Ubuntu. However, since the new install I have items in the top menu ...
3
votes
1answer
81 views

Save screen brightness adjustment?

My laptop is Thinkpad T400 and I am running 14.04. Every time I decrease the brightness of my screen, it will be back to 100% next time I reboot. How can I save the adjustment and apply it once for ...
0
votes
0answers
32 views

Gnome 3.12 brightness does not work

In Gnome 3.12 the brightness slider in the user menu does not work, My video card is an Nvidia GeForce 210 with two monitor connected. I searched for a solution using Google to no avail. Anyone have ...
0
votes
1answer
6k 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
4k 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 ...
1
vote
1answer
48 views

Brightness Get Maximum at Every Restart [duplicate]

Brightness is not remembering it's last state. It make full brightness at every restart. I don't want that, I want my brightness(specific) -echo 50/6. Just it should remember my last brightness ...
1
vote
1answer
58 views

How to stop screen from dimming when power cable is unplugged?

On HP Pavilion with Ubu 14.04 LTS, screen automatically dims when power cable is unplugged. I sometimes want to have maximum brightness, even when power cable is unplugged, for personal reasons. How ...
1
vote
0answers
35 views

Strange boot issue (purple screen)

I'm somewhat of a noob when it comes to this kind of stuff, but I am a computer science student so I am familiar with operating systems. Anyway, I'll try to be as detailed as possible in describing ...
0
votes
0answers
19 views

Rewriting Fn key brightness functions

When doing Fn+Brigthness, the backlight goes in increments/decrements of 50%. So either no light, 50% light, or full light. I wanted to do it in steps of 10 so I installed xbacklight and tried to map ...
1
vote
1answer
118 views

Can't adjust screen brightness ((

Can't adjust screen brightness from anywhere. Nor by specific buttons on the laptop keyboard, nor by setting in "brightness and lock" I've tried to configure the grub file like it mentioned in a lot ...
0
votes
0answers
39 views

Pipelight Video is Dark on Netflix, Amazon Instant Video

I installed pipelight, and it is working, I can see the picture, but it is very dim. It's like the brightness is turned down. I am also getting good sound. This is when streaming Netflix and Amazon ...
0
votes
0answers
22 views

Brigtness not working on HP Pavillion G6

So, I have read many questions about this with answers that I am sure worked for other people. I have an HP Pavillion G6 with Ubuntu 14.10 on it. To get my computer to start up I have to edit the Grub ...
0
votes
2answers
35 views

Grub can't be saved after modification

I have Ubuntu 14.04 32 bit machine on my lenovo g580. Default brightness keys are not working and can't decrease brightness in settings also. The brightness has been fixed at maximum. I followed few ...
10
votes
5answers
7k views

Decrease Backlight Below Minimum

I have this laptop that doesn't handle the backlight very well. In /etc/default/grub, I have added a acpi_backlight=vendor function to get it to work at all. Which is cool, and the backlight now ...
-1
votes
0answers
17 views

How to reset brightness config?

I've moved my SSD with Linux Mint 17.1 Cinnamon to another notebook (ThinkPad T520), but now the brightness control is not working correctly. The level ranges from zero to a little above, but the ...
0
votes
1answer
11k 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 ...
0
votes
1answer
32 views

Laptop screen turns off automatically while using Ubuntu 14.04

I am using dual boot Ubuntu 14.04 and Windows 7. My laptop screen turns off automatically after some time in Ubuntu while the system still remains on. I have checked my brightness and screen settings ...
0
votes
0answers
42 views

Problem, cannot set brightness on Lenovo Z570

My problem is that I cannot set brightness using fn+arrows and any other way. I'm currently using elementary os base on 12.04 and that problem is not showing, but on every ubuntu with higher number I ...
1
vote
1answer
73 views

Can't change brightness at all [duplicate]

Here is what it looks like when I go to the "change brightness" option. I am booting in recovery mode because when I boot to normal Ubuntu mode there is nothing you can see on the screen, I can only ...
0
votes
0answers
59 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 ...
0
votes
1answer
81 views

Fn+F5,F6 keys to adjust brightness doesn't work

I have an Asus N56JK computer and I have tried many different options such as updating the Grub file in /etc/default/grub but to no avail. All other Function keys seems to be working but only function ...
0
votes
0answers
39 views

How to increase Kubuntu 14.04 brightness range?

Hold your horses!. If you are hurrying to flag this as a duplicate of this question or this question, none of those have an answer to what is asked here. Thanks for the attention though. In ...
2
votes
1answer
1k 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 ...
7
votes
3answers
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 ...
0
votes
0answers
12 views

Run script when connecting power cord? [duplicate]

I have this really annoying problem where my screen's brightness goes to maximum whenever I connect the power cord to the laptop. Is there a way to run a script every time this happens so I can lower ...
0
votes
1answer
59 views

Flex 2 not waking up from sleep in Ubuntu 14.04, brightness controls also not working

I have a Lenovo Flex 2 with AMD A6 CPU and 4 GB RAM. It came pre-installed with Windows 8.1. I installed Ubuntu 14.04 on it (single boot). But I am facing problems as the laptop does not wake up from ...
0
votes
0answers
63 views

Screen brightness issue

I am having a problem with Ubuntu on my Netbook (Samsung NP-NC108-A09ID). The problem is: When I try to change the brightness to a higher or lower level, nothing happens.
0
votes
0answers
33 views

Brightness is not decreasing in ubuntu 14.04 in my hp laptop

My laptop is d006tu and d009tu,when I am using Ubuntu 14.04 LTS I am unable to use function keys to control brightness?
0
votes
2answers
109 views

Ubuntu 14.04 stuck at console mode after graphics driver update

Actually I wanted to correct the well known Ubuntu brightness issue as addressed in this YouTubeVideo In essence, the guy says to change the Nvidia driver from open source to any other proprietary ...
0
votes
0answers
19 views

Volume shortcut keys working; brightness shortcut keys not working [duplicate]

I recently installed Ubuntu 14.04 on my Toshiba L840D with an AMD A8 CPU and an AMD Radeon HD 7640G GPU. Everything works as expected, except for the brightness shortcut keys. When I press F2 or F2 ...