Linked Questions

205 votes
18 answers
367k 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 ...
  • 2,263
81 votes
5 answers
370k views

What is a terminal and how do I open and use it?

What is a terminal? How do I open a terminal window? How do I use the terminal?
43 votes
8 answers
92k views

How do you change brightness, color and sharpness from command line?

I am controlling my PC with SSH and scripting. How can i change the brightness, color and sharpness from command line? Try 1: failed $ sudo redshift -t 5000:5000 -g .5 Cannot list GNOME panel ...
user avatar
29 votes
6 answers
22k 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 ...
5 votes
5 answers
10k views

Can't adjust brightness on my MSI VR420 laptop

Using every method possible I'm unable to change my laptop brightness.. It's stuck on super max brightness.. Using the slider in the "screens" window int he control panel doesnt do anything, and using ...
  • 151
5 votes
1 answer
18k views

Brightness controls doesn't work on a MacBook Pro 5.5 (ubuntu 12.04 LTS) [duplicate]

Possible Duplicate: Brightness controls doesn't work on a MacBook Pro 5.5 I recently installed Ubuntu 12.04 LTS on my MacBook pro 5.5 (mid 2009). I have a problem with the brightness control. ...
  • 479
0 votes
3 answers
12k views

How can i make Brightness Control work? [duplicate]

I have Xubuntu 12.04 with latest updates on Toshiba Satellite A210-15K laptop semen@bloknot:~$ uname -a Linux bloknot 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 ...
  • 1
2 votes
1 answer
3k views

How to fix brightness on Ubuntu 14-04 LTS installed on macbook pro 2012 13"

I installed Ubuntu 14.04.02 as dual boot in a macbook pro 2012 13 I noticed that all function buttons works but except those that regulate the brightness of the screen.How do I fix this problem?
2 votes
1 answer
4k views

screen brightness and keyboard backlight works in unity, not in kde

i have ubuntu 12.04 and sony laptop, and i've installed nvidia driver. screen brightness changing (with keyboard fn keys) and keyboard backlight works in unity, but it doesn't in kde. when i issue the ...
  • 969
2 votes
2 answers
1k views

lenovo t460s + 16.04.2: Freeze if suspend after undock

I was having problems with a Lenovo t460s with Ubuntu 16.04.2. Suspend worked fine if laptop was never docked. Once undocked, it would freeze when attempting to come back from suspend. How can I fix ...
  • 408
3 votes
1 answer
3k views

Why don't my Fn keys work for brightness or media after upgrading?

I recently upgraded from 11.04 to 11.10. After the upgrade, I can no longer adjust the screen brightness or the volume using keyboard (before the upgrade, using Fn+F4, Fn+F11, etc. worked). Using Fn+...
  • 341
3 votes
2 answers
2k views

No brightness control, HP dv3500 laptop / GeForce GPU

I feel almost stupid asking a brightness question with all the similar ones out there, but I haven't yet found a working solution, so here goes: System HP dv3500 series laptop (dv3550eo - Scandinavian ...
0 votes
3 answers
1k views

How to dim OLED laptop screen?

I have x1 yoga OLED and screen is always at max brightness. From what I've read since it's OLED the usual dimming doesn't work but this command is needed: xrandr --output eDP1 --brightness .5 ...
0 votes
1 answer
349 views

Lenovo Laptop: Cannot change screen brightness

I havent found a solution so far for my problem after researching for hours and hours.. Basically my Laptop Screen is really really bright and I cannot turn it down with the fn keys. Although they ...
1 vote
2 answers
359 views

Not able to change brightness [12.04]

I can't change my brighness via the default ubuntu tool or my FN keys, or even xbacklight. I'm running Ubuntu 12.04 on a laptop with a dual graphics (AMD HD6770M+Intel). I've the drivers set up ...

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