Yeah, put it to sleep and then wake it up. But i've got another problem: after wake up, my keyboard not working properly. I mean some shortcuts (as Space for Quick Look, or shift-cmd-3 for screenshot) does not do anything. Before I put the machine in sleep, it works. I tried it with an external keyboard, and worked everything perfectly after wake up, but with the internal keyboard, it does'nt. I also tried the all four PS/2 kexts. Any suggestion?