screen brightness problem Acer timelinex 3820T series

[pclinuxguru]

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.

[pclinuxguru]

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.

[pclinuxguru]

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.

[pclinuxguru]

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.