0
votes
1answer
1k views

Ubuntu 13.10, brightness settings issue [duplicate]

I haven't experienced any issues when 13.10 is installed on my desktop but after installing it on my laptop (Fujitsu LifeBook) the brightness settings seem to default to the dimmest setting and even ...
0
votes
1answer
515 views

Brightness Control In Samsung RV 509 [duplicate]

I have recently installed Ubuntu 12.04 on my Samsung laptop RV509 with Nvidia grahics card but brightness remain unchanged. How can I make the brightness control work?
0
votes
1answer
31 views

How to switch the screen illumination off and continue typing? [duplicate]

I can switch the screen illumination manually off by pressing Fn+F6 on my laptop keyboard. This is the same as automatically switching it off on idle as it can be set in the power management. The ...
0
votes
0answers
21 views

No brigtness control on Toshiba Satellite running ubuntu 14.04 LTS [duplicate]

running ubuntu 14.04 lts on a toshiba satellite I have no control of bightness. How can I fix this?
1
vote
0answers
19 views

Brightness reduced after installation [duplicate]

After installing Ubuntu 13.04 the display brightness of my laptop has reduced. Increasing the brightness in system settings makes no change. Can you help me tackle this problem?
-1
votes
0answers
14 views

How do i get my dedicated Screen brightness button to work again? [duplicate]

So i have a q320la Asus Laptop. It has the turn up/down screen brightness on the f5/6 buttons, however the command no longers works on ubuntu 15.10. HOWEVER. the dedicated key to light my keyboard is ...
31
votes
13answers
60k views

Unable to change brightness in a Lenovo laptop

Brightness adjustment keys <Fn + ⇑/⇓> have no effect (although they are recognized by the environment), and I can't change the brightness using GUI tools as well. This seems like a problem in ...
2
votes
7answers
25k views

Can't adjust screen brightness on Ubuntu 12.04LTS

My laptop is Samsung NP-Q430-JS03US. I have searched for the solution. I have tried editing grub acpi_osi=Linux and acpi_backlight=vendor, but still didn't work. Please help.
9
votes
3answers
6k views

Can I control brightness on second monitor?

I have a thinkpad (x301) with an external monitor connected via a DisplayPort to HDMI cable. I can control the brightness of the laptop monitor using the keys on the laptop, but I can't work out how ...
9
votes
3answers
5k 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 ...
1
vote
1answer
13k 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
7k views

samsung laptop brightness issue? can,t change brightness on my laptop [closed]

I have installed windows 7 on my samsung laptop,but there is no effect of brightness when i press fn keys,brightness remains same.what can i do? i m very worried! please help me.
3
votes
3answers
3k views

How to prevent Ubuntu from changing screen brightness?

I have recently installed 12.04 on ASUS-K53SV-V300. I can change the brightness on start-up with: echo 0 > /sys/class/backlight/acpi_video0/brightness >> /etc/rc.local or manually by Fn ...
0
votes
1answer
5k views

Brightness control works only in Ubuntu, doesn't in Xubuntu/Lubuntu/Kubuntu/Mint (Toshiba Satellite L30)

All tested OS were in latest versions (12.04.1 and Mint 13 Mate&XFCE). Already tried xfce panel aplet for screen brightness, acpi_backlight=vendor argument in GRUB_CMDLINE_LINUX_DEFAULT and ...
3
votes
4answers
1k views

Laptop brightness does not change

I have just installed Ubuntu 13.10 and am trying to adjust my laptop screen brightness. My laptop Dell studio 1558 has a key to change the screen brightness; however, when I reduced brightness to zero ...

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