====== nvidia PRIME ======
10.6.2014

Als neuen Versuch, openGL zum laufen zu bringen, wird nun nvidia-PRIME installiert nach der Anleitung auf http://wiki.ubuntuusers.de/Hybrid-Grafikkarten/PRIME#PRIME-und-der-proprietaere-Nvidia-Treiber-nvidia-prime

<code>
sudo apt-get install nvidia-prime  nvidia-319-updates mesa-utils
sudo dpkg-reconfigure lightdm
</code>
Hierbei kam es dann zu der evt. interessanten Fehlermeldung:
<code>
karl@lenovo-w520:~$ sudo dpkg-reconfigure lightdm
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en",
        LC_ALL = (unset),
        LC_PAPER = "en_AT.UTF-8",
        LC_ADDRESS = "en_AT.UTF-8",
        LC_MONETARY = "en_AT.UTF-8",
        LC_NUMERIC = "en_AT.UTF-8",
        LC_TELEPHONE = "en_AT.UTF-8",
        LC_IDENTIFICATION = "en_AT.UTF-8",
        LC_MEASUREMENT = "en_AT.UTF-8",
        LC_TIME = "en_AT.UTF-8",
        LC_NAME = "en_AT.UTF-8",
        LANG = "en_AT.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "en",
        LC_ALL = (unset),
        LC_TIME = "en_AT.UTF-8",
        LC_MONETARY = "en_AT.UTF-8",
        LC_ADDRESS = "en_AT.UTF-8",
        LC_TELEPHONE = "en_AT.UTF-8",
        LC_NAME = "en_AT.UTF-8",
        LC_MEASUREMENT = "en_AT.UTF-8",
        LC_IDENTIFICATION = "en_AT.UTF-8",
        LC_NUMERIC = "en_AT.UTF-8",
        LC_PAPER = "en_AT.UTF-8",
        LANG = "en_AT.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
</code>


<code>
sudo apt-get install lightdm-kde-greeter 
</code>

nun wurde noch die Datei /etc/lightdm/lightdm.conf wie beschrieben erstellt und angepasst. 

Nach dem Neustart geht wieder einmal nix - das war eigentlich auch zu erwarten...\\
Ich hab die datei "/etc/lightdm/lightdm.conf" wieder gelöscht, nun geht wieder alles wie zuvor - aber eben auch ohne openGL.