UNIX for Dummies Questions & Answers

yesterday i've updated online my ditribution of Ubuntu. and there were some video drivers or packages for 2d or 3d acceleration instaled. after i reboot my laptop, i can see the big Ubuntu logo (boot screen) but when it should prompt for my user and password, i cant see anything. it's just a white screen that somehow flickers a little.

what can i do? please please help me.

thanks in advance

do you have an ati grafic adapter?

i don't know for shure where to look.

but there's an Nvidia graphics sticker on my laptop

hmm, the white screen is common for ati cards with compiz enabled... have a look here:
White screen after ATI install in Hardy Heron - Ubuntu Forums

but i don't know about nvidia...

but i cant write any line, any command.

or i can? how?

how can i try to uninstall those things...

change to an commandline screen with alt+f1/2/3 and you should be able to login.

its not working. i cant see a thing on my screen. after the boot Ubuntu image appears, theres just a white flicker and thats all...

but if i type my user, and password, i can hear the HDD working. that means the OS its ok. its working. but i just cant see anything on the screen when i boot ubuntu