Changing screen brightness

Question

I have a hp pavilion dv6 with xubuntu installed. however there isn't a way to change the screen brightness, i tried the fn plus scroll keys to no avail, any ideas?

Same here. cannot change brightness with Fn + arrow keys. – Stann Oct 29 '11 at 17:46 — Stann, Oct 29 '11 at 17:46

score 11 · Answer 1 · answered Dec 26 '11 at 21:15

11

Package name is xfce4-power-manager-plugins. Solved my brightness problem in xubuntu 10.04.2.

answered Dec 26 '11 at 21:15

skorzen

149
1
5

2

I'd give you a thousand +1s! – jcora Feb 01 '13 at 21:32
So I have this package installed, what should I do next? – Klesun Dec 03 '19 at 09:14

score 7 · Answer 2 · answered Jan 24 '12 at 08:00

7

echo 1 | sudo tee /sys/class/backlight/acpi_video0/brightness

You can change:

Brightness from 1 to 10.
acpi_video0 or acpi_video1

answered Jan 24 '12 at 08:00

kholis

723
1
7
9

1

I'm extrremely new to xubuntu, and I was wondering if it could be possible to assign this command to a shortcut key? – Jiskya Nov 02 '12 at 20:41
@Jiskya http://askubuntu.com/a/760958/357970 – Ulad Kasach Apr 27 '16 at 06:47

score 2 · Answer 3 · answered Oct 27 '11 at 19:09

2

XFCE has a panel applet for changing brightness, I don't remember if it's installed, so search in packages (e.g. in synaptic) for XFCE and brightness. Then right-click on the panel to add it.

answered Oct 27 '11 at 19:09

Borsook

2,003
7
24
39

After installing additional power manager package I could add a brightness applet to the panel – Nicky De Maeyer Feb 07 '12 at 10:39

score 1 · Answer 4 · answered Dec 20 '19 at 06:17

Open your terminal
Type sudo apt-get install xfce4-power-manager-plugins
Enter your password and press y key to continue
Right-click on the panel, Panel-> Panel Preferences...
Come to the Items tab, click on Add new items button (+) and search for Power Manager Plugin
Select it and click on the Add button

score 0 · Answer 5 · answered Sep 22 '12 at 17:09

0

I had this problem, i unchecked "Power Manager" from "Application Autostart" list in Settings -> Session and Startup and added another application with this command xfce4-power-manager --no-daemon then i have not have this problem yet.

answered Sep 22 '12 at 17:09

Saeed Zarinfam

17,232
6
35
41

score 0 · Answer 6 · edited Apr 13 '17 at 12:25

0

I've had this problem as well.

What fixed it for me was adding acpi_backlight=vendor to the kernel boot line. For more information see Brightness not working on an HP Pavilion Dv6 with a ATI Radeon HD6770M.

After doing this, I could change my brightness normally using the F2 and F3 keys.

edited Apr 13 '17 at 12:25

Community

1

answered Sep 22 '12 at 17:13

cg505

391
1
3
15

score 0 · Answer 7 · answered Dec 13 '12 at 14:47

What worked for me was modifying the /etc/default/grub file.

Change the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux acpi_backlight=vendor"

Then in a terminal sudo update-grub and reboot.

More info here.

score 0 · Answer 8 · answered Oct 26 '11 at 00:11

0

You need to download the following files in /etc/acpi/ directory

Download video_brightnessup.sh from here

Download video_brightnessdown.sh from here

After replacing these scripts

No reboot or logout required, simply press your function combination on your laptop to change brightness. Try to press FN + Up/Down Arrow.

answered Oct 26 '11 at 00:11

Manuel Andrés Vélez

624
2
6
11

did absolutely nothing :/ – Adam Wilkins Oct 27 '11 at 18:22

score -1 · Answer 9 · answered Oct 25 '11 at 23:22

-1

You can use xgamma. The default value is 1.0, higher is brighter, lower is darker.

Example xgamma -gamma 0.9.

answered Oct 25 '11 at 23:22

Anonymous

11,589
5
32
33

not looking to change the gamma, i want to change the backlight brightness – Adam Wilkins Oct 27 '11 at 18:27

Changing screen brightness

9 Answers9