How to control Brightness on Acer Laptop [duplicate]

Question

I've installed Ubuntu 12.04 in an Acer Timeline X 5830TG and brightness controls were not working (Fn + Key), even the Ubuntu's one.

JorgeeFG · Accepted Answer · 2012-08-29 14:14:30Z

14

Solution:

Edit GRUB:

sudo nano /etc/default/grub

change GRUB_CMDLINE_LINUX_DEFAULT to

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

then:

sudo update-grub

Reboot.

Controls are working.

answered Aug 29, 2012 at 14:14

JorgeeFG

1,8082 gold badges16 silver badges22 bronze badges

1

Works on #! Crunchbang Waldorf too on a native install to Aspire S5
– Meredith
Sep 29, 2013 at 12:40
YEEES! thank you! so many brightness ubuntu issues, so many posts... finally I found the one for me! after monnnths!
– Alexandre Holden Daly
May 6, 2014 at 1:28
Didn't work for me sadly on Linux Mint 19.1 with an Acer Aspire 5810TG.
– Paul Feakins
Dec 28, 2018 at 19:29

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Sarthak killer · Accepted Answer · 2013-05-04 06:56:44Z

0

Most simple and fast way to do this.... Use this command

xrandr --output LVDS1 --brightness 0.5

Set the value in between 0 to 1 like in this case it is 0.5 This works for me Try this !!!

answered May 4, 2013 at 6:56

Sarthak killer

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But this is for manual bright up with console? My answer is to enable the buttons of the keyboard
– JorgeeFG
May 4, 2013 at 22:36

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2 Answers 2