Questions related to screen brightness.

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I cannot adjust brightness of my laptop HP g4 1351tx

I cannot adjust brightness of my laptop HP g4 1351tx. My lshw -c display output. *-display UNCLAIMED description: VGA compatible controller product: GF119M [GeForce 610M] vendor: ...
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8 views

Low screen brightness

If I turn on my laptop without charger, my screen brightness is very low, not only in Ubuntu desktop but in Grub too. I've got dual-boot, Windows hasn't got this problem. So can you suggest me any ...
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11 views

Function keys and numeric keypad problems on packard bell tk85

i've installed Ubuntu 14.04 on my packard bell tk 85 but i'm having problems with the built-in keyboard. Looking at the keyboard setting i can see that the keys from F1 to F12 are mapped correctly. ...
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13 views

Ubuntu MATE brightness keys not working on MacBookPro7,1 with NVIDIA driver, even after fix

I tried the fix detailed in the first answer for this question: Brightness not working after installing NVIDIA driver The second answer caused a failed boot and I had to fix it via Recovery. The ...
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1answer
21 views

Ubuntu gets stuck at boot screen (freeze, not black) after attempting brightness fix for NVIDIA card

I tried editing /etc/X11/xorg.conf as detailed here: Brightness not working after installing NVIDIA driver My Ubuntu MATE installation on my MacBook Pro Mid-2010 13" now gets stuck at the ...
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10 views

Which package is responsible for resetting brightness level on logout or reboot?

I've installed Xubuntu 15.04 and observed that brightness level is still being reset on logout or reboot. Google reveals that this bug has been around since 2011, and this workaround sort of works ...
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1answer
80 views

Brightness setting not working on Xubuntu 15.04 ( vivid vervet)

I recently upgraded from xubuntu 14.04 to 14.10 and then to 15.04 on Lenovo z580. I used to control brightness on 14.04 using xbacklight from command line. Now its not working. 15.04 also has a ...
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1answer
39 views

Brightness Controls Serious Lag Ubunut 15.04

I have a Asus N56v Laptop, recently upgraded to Vivid and now my Brightness Controls accessed via ("fn+F5", "fn+F6", "fn+F7") have a dramatic lag. I can wait 30 up to 120 seconds before the keystroke ...
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3answers
24 views

sound and brightness notification lost

i don't know what happened specifically but now i faced a sudden disappearance of sound level notification and also the brightness level notification and the notification style now changed to one that ...
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0answers
142 views

Ubuntu 15.04, brightness setting reversed

I just have installed Ubuntu 15.04 (64bit, installed in EFI) on my Packard Bell laptop and the problem I am facing is really annoying : The brightness setting is reversed: Brightness 0% : black ...
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85 views

Screen brightness issue Toshiba Portège after 15.04 upgrade

I have a toshiba portège Z30-A-13P. I can no longer adjust my screen brightness after upgrading ubuntu to version 15.04 (kernel 3.19). The screen brightness (as well as the touchpad) didn't work ...
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17 views

Can't Adjust Brightness In ASUS X401U

i have a problem with my Ubuntu 14.04. I installed it on my ASUS X401U and i can't adjust the screen brightness trough the Fn. key or system setting. i have tried some way like edit the grub file. but ...
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1answer
16 views

Laptop Screen Flashing

i own a hp dv6-3080br laptop and its always been a pain in the ass to use with linux, the most stable system i could get running on it was ubuntu 14.04 with kernel 3.13. i recently updated it to 14.10 ...
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1answer
21 views

Disable faint of display Ubuntu 14.04

I want to know there is exist some way to disable faint of display brightness when I don't connected to energy network(I use notebook). I have already set on both pages Brightness and Supply to do ...
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1answer
1k views

Message {1.079026} ACPI PCC probe failed; starting version 219

I am running Ubuntu 15.04 (Vivid Vervet) with 3.19.5-031905-generic #201504211114 kernel and GNOME Shell 3.14.4 on a Samsung NP370R4E laptop. When I boot up, I see [1.079026] ACPI PCC probe failed ...
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0answers
34 views

How do I stop the lock screen from dimming to black?

I've spent a ton of time searching for this on Google, and I still can't seem to find it. Please read fully before answering, because the majority of the answers I'm finding are about preventing ...
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0answers
19 views

How to configure ubuntu brightness control

I have a Sony VAIO Z laptop, and installed Ubuntu. Most of the stuff does not work and the battery drains very quick but most annoyingly the brightness control does not support the full range of ...
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34 views

Ubuntu 14.04 LTS having problem with Brightness and Touchpad hotkey

I've installed Ubuntu 14.04 on my IdeaPad Z570 Laptop. Initially, when the system is fresh, all hot-keys except the brightness control was working perfectly fine. I went through various solutions ...
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2answers
27 views

GUI tool to set the screen brigtness

What a GUI tool can I use to set the screen brightness? A simple explanation is welcomed
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3answers
79 views

Asus UX303LAB brightness keys do not work

I am a beginner at using linux and I have been trying to get Ubuntu to work with the ASUS ZenBook UX303LAB (Broadwell version). I am having problems with Brightness keys, keyboard backlight brightness ...
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1answer
21 views

Not able to log in through the Terminal or GUI log in screen

I have Ubuntu 14.04LTS installed alongside windows 8.1. Everything was working fine until I tried to fix the brightness issue on Ubuntu as given on http://itsfoss.com/fix-brightness-ubuntu-1310/ But ...
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0answers
22 views

Problem with my screen and brightness buttons don't work

I have problem on my laptop and my screen was pixelated althroughout when i turn on my laptop. and also the brightness don't work at the same time. any suggestions?
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1answer
73 views

Unable to shutdown, restart or logout

I am unable to shutdown, restart or logout from my ubuntu 14.04 machine. The screen goes blank, but the system hangs, then the fan begins to run fast. I have to turnoff the laptop by pressing and ...
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0answers
41 views

14.04: Brightness control worked fine but completely disappeard after ubuntu update!!!!!!!! wifi is gone also

what the hell!!!! my eyes are going blind as i lay in my bed.. please help.. how should i explain this.. brightness keyboard keys are not working and when i go to system settings and then ...
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1answer
28 views

require help regarding brightness adjustment [duplicate]

i adjust the brightness to a lower level after logging in but this goes back to full after restarting. is there a way to stop this from happening?i am new to ubuntu and did a clean istall of ubuntu ...
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44 views

FGLRX drivers boots without backlight

Fglrx Not working after install (I know) HW : Asus K72j with AMD HD5470 laptop So, after installing the ATI drivers fglrx on my ASUS K72J laptop via CL my screen booted black. So at first I thought ...
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1answer
25 views

How can I delete files or folders created by Nano editor?

I've searched a method to change the brightness of my laptop display. I saw one article on this forum and followed the instruction like below (under the line) written by Serge (user name). I ran ...
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0answers
109 views

Can't change screen brightness running Ubuntu 14.04LTS on Samsung NP510R5E

FIXED! After DBANing my hard drive I installed Ubuntu 14.04LTS and quickly realised I've been unable to change screen brightness. This isn't too much of an issue when AC power is plugged in as the ...
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39 views

cannot change brightness Ubuntu 14.04 on ASUS x552E

I have ASUS laptop with ADM RADEON HD 8670M and I cannot change brightness at all! I tried to use open source drivers (with adding in grub "acpi_backlight=vendor radeon.dpm=1") I tried use ...
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2answers
62 views

Brightness control is not working on Ubuntu 14.04

I am new to Ubuntu, I installed Ubuntu 14.04 on my Sony Vaio VPCEH38FN Laptop. I am not able to change the brightness in my system. In my system Fn+F5 and Fn+F6 buttons are used to change the ...
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0answers
39 views

[Solved - Lubuntu Screen goes dark when switch user]

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. ...
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1answer
259 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 ...
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2answers
41 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 ...
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0answers
17 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 ...
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0answers
71 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) - ...
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33 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 ...
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0answers
72 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 ...
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0answers
29 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 ...
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42 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 ...
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0answers
59 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 ...
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0answers
20 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 ...
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3answers
138 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 ...
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0answers
28 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 ...
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0answers
44 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 ...
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0answers
31 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. ...
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1answer
51 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 ...
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0answers
51 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 ...
3
votes
1answer
98 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 ...
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0answers
24 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 ...
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0answers
73 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 ...