my screen goes blank (white color) when I choose radeon drivers

[krystian w]

my screen goes blank (white color) when I choose radeon drivers
I have ati radeon 1650 256 mb agp x 8 and athlon 64 3200 + procesor
when I hit alt + F2 and run gksu nautilus I select diffrent card then ubuntu did (I ment drivers for ati radeon)
then crritical error shows up and my system went blank please fix it

[krystian w (topgreen)]

this was hardy heron relase of ubuntu

[Michael Nagel (nailor)]

thanks for your bug report. with radeon drivers you mean the closed source fglrx driver?

[krystian w (topgreen)]

Yes meant closed driver,but now it isnt a problem because I reinstalled my system to old 7.10 kubuntu but earlier I encounter a new problem when I was using a Ubuntu 64 for amd procesors fixed relase the ( driver works fine)__BUT___ I had this wrong architecture error and I didn't know how to install not! 64 aplications on this system that's why a returned tu kubuntu 7.10 version. I wish to use ubuntu 64 but I just could't pass this problem on my own please help