I have installed my audio driver.But it is not fixed.So i uninstall it that have destroyed my gnome.When i was going to login my gnome environment again,It happened:
localuser:root being added to access control list.
no profile for user "root" found
lauching asczm deamon with socket froatend.....
loading simple config module...
creating backend.....
gnome_session:error while loading shared libraries:libasound.so.z:can not open shared object...