How do i lower the brightness on my display of Acer netbook AO725? I try to lower it but it wont lower?

Asked by alvaro on 2013-04-11

Ok so i recently installed Ubuntu on my Acer Netbook AO725 and the ive tried lowering the display brightness in settings but it wont lower down. It is too bright for my eyes the display? Anybody know to do this?

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
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Solved by:
N1ck 7h0m4d4k15
Solved:
2013-04-11
Last query:
2013-04-11
Last reply:
2013-04-11
Best N1ck 7h0m4d4k15 (nicktux) said : #1

You can do that with keys (in my Acer are Fn + Arrow keys ) combo.

If not working , then try this

Open a terminal (CTRL+ALT+T) and execute

    gksudo gedit /etc/default/grub

search and find the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

and make it like this

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="

proofread twice and then save the file.

After that run in terminal

    sudo update-grub

and reboot your system.

Hopefully Fn keys will work then.

Regards
 NikTh

Also be sure you have the latest BIOS. It can help.

alvaro (alvaroolivero) said : #3

When when i searched that nothing came out. Do i need to type GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" also?

That is already in the file, just add the extra option in the quotes.

You don't need to literally search with the text editor. Try using your eyes.

alvaro (alvaroolivero) said : #6

Thanks NikTh, that solved my question.