screen brightness problem Acer timelinex 3820T series

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screen brightness problem Acer timelinex 3820T series

Postby pclinuxguru » Sun Oct 17, 2010 2:36 am

Could use a fix if possible.

Os Linux Ultimate 2.7 10.1 LTS updated to 10.10 kernel 2.6.35.22.

Laptop is a Acer timelinex with a Intel 540m with Intel HD graphics built in

Problem is

Lack the ability to dim the screen on battery mode, or any mode for that matter.

I did see a work around on line once, but am unable to find it again.

Please help, thank you for your time.
Last edited by pclinuxguru on Sun Oct 17, 2010 1:05 pm, edited 1 time in total.
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Re: Intel HD graghics screen dimming problem

Postby pclinuxguru » Sun Oct 17, 2010 12:30 pm

Now the laptop wont boot.

all I get is some odd kbuntu 10.10 log in splash screen then logon prompt that looks like old school dos.

HELP

Ok I moded the files back using live cd and I am back in.

going to need another fix, that didn't work.
Last edited by pclinuxguru on Sun Oct 17, 2010 1:25 pm, edited 1 time in total.
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Re: Intel HD graghics screen dimming problem

Postby pclinuxguru » Sun Oct 17, 2010 12:58 pm

ok so the command you mentioned was a fundamental FAIL on a Acer timelinex 3820T series.

Total fix was,




Code: Select all
sudo gedit /etc/default/grub


Change the line GRUB_CMDLINE_LINUX="" into


Code: Select all
GRUB_CMDLINE_LINUX="acpi_osi=Linux"


then run


Code: Select all
sudo update-grub


In my case this worked.
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Re: screen brightness problem Acer timelinex 3820T series

Postby pclinuxguru » Mon Oct 18, 2010 1:46 pm

I thank you so much for trying to help.

Didn't like the fact I couldn't boot the laptop any more lol.

But at least you tried and I thank you.
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