Acer Aspire 5336 Ubuntu (11.04) black screen/brightness fix

[the_crayon_king]

This fixed a black screen issue and a brightness adjustment issue after installation of ubuntu. Also on 11.04 I couldn't get Unity to work until I edited grub I didn't come up with the fix but it took me forever to find a solution so I figured I would post it. If I have did something wrong just get a mod to delete or move this. I don't use forums often.

sudo gedit /etc/default/grub

Edit two lines to read as follows: 

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

sudo update-grub

[Chris2243]

Thanks for this, it sorted it for me. The function buttons are reversed but I can live with it!

[docmark777]

Either I did it wrong or it didn't work for me. I think I probably did it wrong.

Could you rewrite those instructions with any and all details.

I assume that was not all done in the terminal window?

Thanks,

[diehard67]

Thanks for this, it sorted it for me. The function buttons are reversed but I can live with it!

I have an acer aspire 7715 and had the same problem, I upgraded the bios and it went away, the reversed brightness buttons I meen, still waiting for a fix to that backlight issue, however the workaround in the first post allowed me to atleast turn on the light myself.

[danielelias22]

My screen was waayyy to white.

NOw i can see better.

I love you.

[leisuresuitgreg]

Can't seem to get this to work on HP 6735s...

Any other ideas anyone? I have noticed others using this

echo 9>/sys/class/backlight/acpi_video0/brightness

But I have nothing in the folder /sys/class/backlight/ It is empty!

Cheers for any help in advance!

Greg

[thelildrummaboy]

i dont get the code stuff how do you do all this stuff just got linux a few days ago have the same issue dont know how top use the terminal can you please help me

[Vines]

Oh, man! I love you too. Fixed brightness control on Acer Aspire 5755G.

[babakmoazzez]

Thanks to the_crayon_king, the first solution worked for me.

[pilotuser]

Thanks, the_crayon_king. It also works in 11.10 !