Kubuntu 14.04 boot in console mode after upgrade

[Guest]

Hello, I upgrade my kubuntu 13.10 to 14.10 this morning. The upgrade was succsesfull but when i restart kubuntu load only console, no desctop. Please help
Everything was just fine before upgrade.

[Guest]

when type startx
Initializing built-in extension Generic Event Extension
.....
Loading extension GLX
(EE)
(EE) no screens found (EE)
(EE)
please consult the x.0rg foundation support
xinit : giving up
xinit : unable to connect to x server: connection refused
xinit: server error

[Snowhog]

From the console (CLI) type:

sudo apt-get update
sudo apt-get install -f
sudo apt-get update
sudo apt-get dist-upgrade

Assuming you have a network connection, the above will:

1. Update the package cache
2. Attempt to fix broken/partially installed packages
3. Update the package cache
4. Perform an intelligent upgrade to all installed applications

When finished, reboot. If you still end up at a console and not a working desktop, post back.