Laptop keyboard doesn't work

[magnusbrodin]

Hi! I just traded my Win8 for Ubuntu12.04 LTS but I can't get my keyboard working. In the startup when I have to choose witch OS to use the built in keyboard works but when Ubuntu has started the keyboard doesn't work. I have to connect a USB keyboard to write. My touchpad works just fine. I'm really new to Linux so please write a really easy "get your keyboard startet for dummies" and I'll be happy The laptop is a LG S900.

[Marric]

Did you already try to reinstall Ubuntu 12.04. ?
I've read that it helped in those cases.

Good luck.

[magnusbrodin]

I have tried several different Linux versions with the same result, as soon as the OS is fully started the keyboard doesnt work. I have benn looking around for a good solution but so far havnt seen one.

[Marric]

Connect your USB keyboard, this solution for the LG S900 is from an old thread, but maybe it still works..

Paste the following in your Terminal

sudo gedit /etc/default/grub

The editor will open a grub configuration file.
Be careful here, do not change anything except the below.

Search for

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

and change it to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp=1 i8042.dumbkbd=1"

there might be other text between the quotes, do not remove it.
Save and exit.

To make these changes work paste this command in your Terminal

sudo update-grub

Ok then just reboot, cross your fingers and tell me how it went.

Source: http://ubuntuforums.org/showthread.php?t=1301842 #13

[magnusbrodin]

Thank you Marric for trying to help, it's greatley apreciated. I entered the text you told me to an rebooted but unfortunately it didn't help. Anyone else that would like to have a go at the problem?

[Marric]

Add this to the grub as above

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off i8042.nopnp=1 i8042.dumbkbd=1"

Alternatively try

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off i8042.nomux=1 i8042.reset"

and do not forget

sudo update-grub