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A couple of ideas: Type Ctrl-Alt-F1. This should bring you to a terminal (non-graphics) console with a login prompt. You should be able to login here, sudo to root and look at log files under /var/log. This way you may be able to determine exactly what is happening. You may also be able to set the power options by going to System Settings -> Power, and ...


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You can install proprietary drivers by running in a terminal: sudo apt-get update sudo apt-get install nvidia-346 nvidia-prime Then you will be able to switch between the integrated and discrete adapters after a reboot.


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Open your command line(terminal) and put this to edit the config file: sudo gedit /etc/polkit-1/localauthority/50-local.d/com.ubuntu.enable-hibernate.pkla Copy and paste below lines into the file and save it. [Re-enable hibernate by default in upower] Identity=unix-user:* Action=org.freedesktop.upower.hibernate ResultActive=yes ...



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