Cannot Dim my display

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Cannot Dim my display

Postby robc430 on Tue Nov 15, 2011 12:21 am

I just recieved an Acer Aspire TimeLineX 4830T and I installed Linux Mint Debian Edition. Everything works out of box except for the brightness controls. I can use the function keys on the laptop and it brings up the slider showing that the brightness is going down but it never actually does. Is there anyway I can fix this issue?
robc430
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Re: Cannot Dim my display

Postby robc430 on Thu Nov 17, 2011 12:46 pm

Found a fix, here it is if anyone needs it:

In Terminal:

sudo gedit /etc/default/grub
Change the line :
GRUB_CMDLINE_LINUX=""
to
GRUB_CMDLINE_LINUX="acpi_osi=Linux"

Then run sudo update-grub and reboot.
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