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I have been searching for days on getting started with Linux and still can't get started.

I am running the following

CAELinux xunbuntu 12.04 I7 16 GB ram SSD 500 gb Nvidia GT 540M and an integrated graphics card.

I tried to follow the information from this link 

sudo apt-get purge nvidia

sudo add-apt-repository ppa:graphics-drivers

sudo apt-get update

the following shows up. I don't know if this matters. 

Note the .com was removed because I can 

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.opensuse.org ./ Release: The following signatures were invalid: KEYEXPIRED 1396321314

then when I try to download the driver....

sudo apt-get install nvidia-352

Reading package lists... Done

Building dependency tree 

Reading state information... Done

E: Unable to locate package nvidia-352

At this point I tried the manual method from the same site.

but when I typed in 

sudo service lightdm stop

I got a 

"starting the virtual box Guest additions Fail!"
"modprode vboxguest failed"

and if I tried to type in my user name and hit enter what I typed just showed up in white text and enter did nothing.

Any help would be greatly appreciated. I have already reinstalled CAELinux xubuntu 12.04 four times to start fresh.

UPDATE

When I tried to allow the root user access to the X server:

xhost local:root

And point the command to the right DISPLAY:

sudo DISPLAY=$DISPLAY gedit /etc/profile

this was diplayed 

gedit: command not found

I tried

sudo apt-get update && sudo apt-get install nvidia-352

and after all the update info it displayed

Unable to locate package nvidia-352

BaisJohn
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2 Answers2

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First, lets get Ubuntu to a 'clean' state, without any nvidia drivers installed:

sudo apt-get purge $(dpkg -l | awk '$2~/nvidia/ {print $2}')

Next, let's remove the x-server error - follow this answer.

You can install the latest NVIDIA drivers by adding their new PPA to your system.

To do so:

sudo add-apt-repository ppa:graphics-drivers/ppa
sudo apt-get update && sudo apt-get install nvidia-355

And as OMG! Ubuntu! say:
Remember: if the PPA breaks your system you are allowed to keep both halves. ;)

NOTE: The ppa works with versions 12.04.1 through to 15.10, so make sure you upgrade your version to the .1 release if you haven't already.

EDIT:Turns out you can't get the GT540M nvidia drivers to work on Linux.

Check out this answer.

Community
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TellMeWhy
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0

it is normal if the GPG Key EXPIRE.

Purge your driver and install the "official" ppa driver repository:

http://www.webupd8.org/2015/08/new-official-proprietary-gpu-drivers.html

pata_de_jaguar
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