Comment 22 for bug 760632

A workaround is to downgrade to nvidia-current 260. Unfortunately an ABI incompatibility
requires also to downgrade to XOrg 1.9 and the whole process has to be done manually.

Fetch the packages via wget (note that I'm using the x86_64 packages here: replace amd64 with i386 if needed)

wget http://archive.ubuntu.com/ubuntu/pool/main/x/xorg-server/xserver-common_1.9.0-0ubuntu7.3_all.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xorg-server/xserver-xorg-core_1.9.0-0ubuntu7.3_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-input-evdev/xserver-xorg-input-evdev_2.3.2-6ubuntu3.1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xorg/xserver-xorg_7.5+6ubuntu3_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xorg/xserver-xorg-input-all_7.5+6ubuntu3_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-input-mouse/xserver-xorg-input-mouse_1.5.0-2build1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-input-synaptics/xserver-xorg-input-synaptics_1.2.2-2ubuntu5_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-input-vmmouse/xserver-xorg-input-vmmouse_12.6.9-2build1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xf86-input-wacom/xserver-xorg-input-wacom_0.10.8-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/x/xorg/xserver-xorg-video-all_7.5+6ubuntu3_amd64.deb

wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-current_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-glx-185-dev_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-glx-185_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-current-dev_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-185-libvdpau_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-185-libvdpau-dev_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/restricted/n/nvidia-graphics-drivers/nvidia-185-kernel-source_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/n/nvidia-graphics-drivers/nvidia-185-modaliases_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/n/nvidia-graphics-drivers/nvidia-current-modaliases_260.19.06-0ubuntu1_amd64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/n/nvidia-settings/nvidia-settings_260.19.06-0ubuntu1_amd64.deb

Clean up the current installation:

sudo apt-get purge nvidia-current

and install everything with

sudo dpkg -i *.deb

then reboot.