Linked Questions

12 votes
8 answers
27k views

Brightness function keys not working [duplicate]

I have an ASUS X55A-SPD0204O laptop. The rest of the FN+Fx (where x = number) like sound + - mute, screen turn off, wireless etc. work perfectly. The problem is with the 2 brightness keys. They just ...
Halta's user avatar
  • 669
3 votes
1 answer
3k views

Fn+F5/6 Brightness shortcut not working - Asus laptop - Ubuntu 14.04 [duplicate]

The brightness function keys on my Asus laptop don't work on Ubuntu. The function key combinations for sound volume (Fn+F12/F11/F10) and turning the screen on and off (Fn+F7), but not those that ...
FrogSkyWater's user avatar
3 votes
1 answer
2k views

Screen brightness keys not working (fn + f5/f6) [duplicate]

i'm using ASUS K501U with Ubuntu 14.04 LTS and Gnome-shell 3.10.4, The screen brightness works only from settings, i tried that, but it disabled all my fn keys: In the terminal: sudo gedit /etc/...
Breahna David's user avatar
0 votes
1 answer
702 views

Black screen after hdmi monitor unplugged [duplicate]

I really need help. I have Kubuntu 16.10 on my laptop a everything worked. With external hdmi monitor too. But once I unplugged the monitor, then plugged it in again. And now it doesn't work without ...
Jiří Dědic's user avatar
109 votes
15 answers
317k views

Blank screen after installing nvidia restricted driver

I've installed the current nvidia restricted driver and rebooted my machine and now I get a black or blank screen. How can I fix this?
34 votes
20 answers
106k views

Cannot change backlight brightness Ubuntu 14.04

This morning I found that I cannot change the brightness of my Dell XPs 13 laptop's display anymore. I tried the following to change the brightness Use keyboard brightness keys Run the commands shown ...
Lespaul86's user avatar
  • 371
26 votes
7 answers
117k views

How do I log out using only the keyboard?

In Ubuntu 11.04, Ctrl-Alt-Del gives me a menu with shutdown, hibernate, suspend and restart, but no logout. Is there a key combination to log out off Ubuntu? Is there a way to provide one?
drevicko's user avatar
  • 4,363
20 votes
4 answers
25k views

Screen brightness isn't taking effect on a Lenovo Z570

My Lenovo Z570 has two GPU's, nVidia and Intell. Brightness control has no effect what so ever over the screen brightness, and because I've had some major issues in the past when I was trying to ...
Valentin's user avatar
  • 471
11 votes
4 answers
10k 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 ...
danielvdende's user avatar
4 votes
2 answers
13k views

Asus ROG Zephyrus Keyboard Backlight not working [duplicate]

I'm having quite the time getting my keyboard backlights to work on my ROG Zephyrus laptop. Some of the F# keys do not respond their dedicated function when holding the Fn key. Specifically the key ...
shanedora's user avatar
4 votes
1 answer
4k views

Brightness buttons on Hp laptop not working

EDIT: : The first link mentioned in the question may work for some. In the latest hp laptops like hp-au111tx(mine), to change the brightness/backlight there are two function buttons which can be ...
sarthakgupta072's user avatar
2 votes
1 answer
1k views

Dell Inspiron laptop 17 7000 - brightness function keys Fn-F11 and Fn-F12 not working

The function keys to control the screen brightness - Fn-F11 & Fn-F12 - are not working. Xubuntu 18.10. Dell Inspiron 17 7000 (7786) laptop I have tried updating the boot parameters in /etc/default/...
David Robson's user avatar
0 votes
1 answer
2k views

Fn + F3 / F4 backlight keys for keyboard brightness not working in Asus laptop?

I'm using ASUS K501U with Ubuntu 14.04 LTS and Gnome-shell 3.10.4. The keyboard brightness doesn't work, since keys fn + f3/f4 have no effect. Is it a way to fix that?
Breahna David's user avatar
0 votes
1 answer
1k views

ASUS X555LN Brightness fn key not working in Ubuntu 14.04

I have installed Ubuntu 14.04 on my ASUS X555L Laptop using an nVidia GeForce 520M Graphics card. The fn+f5/f6 keys are unable to adjust brightness. Currently my screen brightness level is maximum. My ...
chatzz's user avatar
  • 1
0 votes
1 answer
1k views

Asus UX303LA fn brightness keys not working

I've searched everywhere for a solution. I've tried this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force acpi_backlight=vendor acpi_osi=" each variable on it's own and different ...
Atrotors's user avatar
  • 105

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