Just install the laptop-mode-tool, a tool to help save energy and some other stuff (GG to learn more nhé). But after installing the mouse cord measure, Last time was not suspend it turned out that the so-breaks to save energy. But somehow a few hours later without further.

To be sure, you edit the file AUTOSUSPEND_TIMEOUT /etc/laptop-mode/conf.d/usb-autosuspend.conf, initially by 2 must, revised slightly higher, it is time (in seconds) suspend.