I finally sorted it out!!! I only changed in /etc/X11/xorg.conf in Section "Screen" the Option "metamodes" "1440x900 +0+0; nvidia-auto-select +0+0" into "metamodes" "1440x900_60" where 60 is my native lcd refresh rate.
Now every time I boot everything is crystal clear. I enclose an attachment of my xorg.conf with this post. Please send positive feedback of the solution ** Attachment added: "xorg.conf" https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/634648/+attachment/3140172/+files/xorg.conf -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-settings in Ubuntu. https://bugs.launchpad.net/bugs/634648 Title: Saved settings are not used after log in/reboot/x server reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/634648/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp