Please i have installed BT5 KDE for 20 times on my usb, after a reboot X server crashed :

Xinit Ressource temporarily unavailable (errno 11) : unable to connect to X server waiting for X server to shut down ddxSigGiveUp: Closing log
xinit: Server error. xauth: error in locking authority file /root/.Xauthority

if it related to a graphics card driver please a full tutorial to install my "Intel GMA 3150" driver.