Cannot login to F15 without nomodeset

[Manilal K M]

Hello all,
  I have upgraded my desktop to Fedora 15 through YUM. The machine
boots fine, but after starting all the services it hangs with a blue
screen and the login screen doesn't appear.

I tried booting with the *nomodeset* parameter in grub and I was able
to login to the fall-back desktop.

I have also reported a bug in
bugzilla(https://bugzilla.redhat.com/show_bug.cgi?id=699651), but I'm
not sure whether I have reported it with all the required information.
So I thought that discussing it with other testers before improving
the bug request.

regards