Tuesday, November 30, 2010

Ubuntu 10.10 brightness problem in Acer Aspire 4741

To those who have problem with brightness configuration after installing Ubuntu 10.10 and you are using Acer Aspire 4741, here's a solution for you:
  1. sudo gedit /etc/default/grub
  2. Change the line GRUB_CMDLINE_LINUX="" into
    GRUB_CMDLINE_LINUX="acpi_osi=Linux"
  3. sudo update-grub
  4. Restart your linux

Hopefully it helps.

30 comments:

Anonymous said...

Will this work with a packard bell easynote?

pentium dual core T4400 @ 2.20 GHz and 4mb ram.

graphics card: Mobile Intel(R) 4 Series Express Chipset Family

Anonymous said...

Tried fix, it works thanks

Anonymous said...

Tried this on an Acer Aspire 5741 with Intel HD graphics (5700) and did not work. Still have the brightness control on the screen, but intensity does not change. Any ideas? Thanks in advance for any help you can provide!

Anonymous said...

I stand corrected. this DID correct the brightness issue on my 5741. I fat fingered the command in the grub cfg.

Thanks for this informative fix! Much appreciated!

Anonymous said...

Thanks worked on Gateway idc59c with intel graphics

troy arthur said...

Great!!
Thats fully worked!
Thanks so much, Om!!
hahai

Prem said...

Dear Santoso,

Thanks a bunch.... I was having severe strain because of this brightness....

Thanks,
Prem

Anonymous said...

Hi Santoso.

I can't thank you enough for this solution. I was seconds away from un-installing linux until I saw your link and I tried it and now I my brightness is controllable! Thank you very much.

Anonymous said...

Hello... thanks for the useful post.
However, is there a solution for an Acer running Fedora 14? I guess it is just a matter of finding the right file... but wehere? I'm linux-new.

Thanks lots

Michele

Anonymous said...

Sorry, I have been too quick.

Found the solution here: http://fedoraforum.org/forum/showthread.php?p=1389551

Thanks again for your extremely useful post!

M

MTA said...

Terima kasih Santoso, jauh2 di Canada, cari solusi, eh nemunya dari Indonesia juga :-). Sekali lagi, thanks. Salam, -toha-

Anonymous said...

Thanks, brightness now works perfectly on Acer 5736Z.

Santoso said...

@MTA:
sama-sama :) senang bisa membantu.

Salam.

Anonymous said...

Worked on ASUS UL30VT Ubuntu 10.10 64-bit

husein said...

kang, aye pakai natty, sore ini tiba2 backlight jadi 100 % dan power management settings juga ngilang. pakai ubuntu Tweak, tidak bisa di setting.

dah ngikut tips akang, tapi belum sukses , ada saran ?

Anonymous said...

Not even going to bother looking at what Acer I have. Brightness wasn't working, this fixed it. Just put on Ubuntu 11 something.

tl;dr Thanks!

Anonymous said...

its work for my acer aspire 5720
ur amazing thank you very much.

Марияна Михова said...

Thank you VERY MUch Santoso.

You're tha man :-).
I fixed an Acer Aspire 5740 using your instructions.

Cheers man :-).

Marginal said...

Just to mention that the the person above is not the one mentioned.
She's a friend of mine.

Thanks again :-).

Santoso said...

Glad to help u guys :)

Anonymous said...

I was suffering from eyestrain on using ny Acer Aspire 4755. Tried your solution and it works fine ! Thanks a lot !!

Administrator said...

I have aspire 5741, had the same problem with ubuntu 11.04, tried this fix, worked for me, Thanks :)

Anonymous said...

thanks a lot dude,
u r awesome.

Filipo Rviz said...

Hi!

It doesn't work for me :(
Ubuntu 11.04
Acer Aspire 4750.

I've tried the code "acpi=off noapic nolapic", it works but disable the battery options.

Anonymous said...

mas, saya install ubuntu 10.10 di acer 4741, tapi wifi gak bisa kedetect. gimana ya solusinya..makasih

Anonymous said...

Brilliant, like everyone else this saved me. This is years down the road and your post is still valid and helpful, thank you.

Anonymous said...

You, santoso

win all my internets

Anonymous said...

Hi, i recently got Linux mint installed on my Acer 4740 (intel i3 ). I did tryout the command to reduce the screen brightness. It doesn`t seem to work. can some one guide me on how to reducing the screen brightness. Thanks

Anonymous said...

Worked for an Aspire 7741Z-4643 running Precise Pangolin.

Thank you!

Anonymous said...

Woohoo! You are a wonderful person. Thanks so much - this worked fine on an Acer Aspire 5741 running Linux Mint Maya 13.