How to install the function key Fn of Ubuntu10.04LucidLynx In the ASUS Notebook

After Ubuntu10.04Lucid is installed on the ASUS Notebook, the Fn function key does not work properly. In particular, the screen brightness cannot be adjusted and the display cannot be closed through Fn. The solution provided on the network is as follows (this link cannot be opened and is saved from the snapshot): EnableFnKeysOnYourAsusEeePCandUbuntu10.04LucidLynxIt 'sbothniceandbadwhenI

After Ubuntu 10.04 Lucid is installed on the ASUS Notebook, the Fn function key does not work properly. In particular, the screen brightness cannot be adjusted and the display cannot be closed through Fn.

The solution provided on the network is as follows (the link cannot be opened and is saved from the snapshot here ):

Enable Fn Keys On Your Asus EeePC and Ubuntu 10.04 Lucid Lynx

It's both nice and bad when I upgrade to a newer Ubuntu version. the good part is I have lots of posts material for the blog but the bad part is there's always something on my main computer or netbook which doesn't work out of the box and needs tweaking.

I really didn't expect CT the Fn keys to work out of the box on my Asus EeePC 1005HA (so this method has only been tested for this Asus EeePC model, I don't know if it works on others) and unfortunately I was right. however, the fix is very quick. here's what you have to do.

Notice: editing the Grub can be dangerous so be very careful not to change anything else! Www.linuxidc.com

To enable the Fn keys on an Asus EeePC 1005HA (possibly other models too) with Ubuntu 10.04 Lucid Lynx, open a terminal and type:

Sudo gedit/etc/default/grub

And search for the line that says:

GRUB_CMDLINE_LINUX_DEFAULT

This line shoshould originally look like this:

GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash"

Add acpi_osi = Linux to the end of the line, before the closing quote. Basically after you edit it, the line shoshould look like this:

GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash acpi_osi = Linux"

Once you're done, save the file and run the following command:

Sudo update-grub

Now reboot!

However, unfortunately, the above method does not solve the problem.

Another method is provided below.

Problem

If you just updated to 10.04 and you might be experiencing issues with your function keys supposed to control screen brightness on my Asus UL30a It worked fine in 9.10.
Workaround

Open up Terminal and enter the following

Gksudo gedit/etc/default/grub

Look for the line that says GRUB_CMDLINE_LINUX and add this

GRUB_CMDLINE_LINUX = "acpi_backlight = vendor"

Save it and then update Grub

Sudo update-grub

Reboot your system.

Change vendor to asus.