I took nvidia-current_304.37-0ubuntu1~xedgers~precise2_amd64.deb from http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu as say by danrgmc. It's work fine after 6 hours without logoff.
I took nvidia- current_ 304.37- 0ubuntu1~ xedgers~ precise2_ amd64.deb from http:// ppa.launchpad. net/xorg- edgers/ ppa/ubuntu as say by danrgmc. It's work fine after 6 hours without logoff.